2024 |
Clancy B, Bonevski B, English C, Callister R, Baker AL, Collins C, et al., 'Health risk factors in Australian Stroke Survivors: A latent class analysis.', Health Promot J Austr, 35 37-44 (2024) [C1]
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Nova |
2023 |
Feighan L, MacDonald-Wicks L, Callister R, Surjan Y, 'Practitioner perceptions on the use of exercise and nutritional interventions for patients with breast cancer receiving radiation therapy.', J Med Radiat Sci, 70 444-453 (2023) [C1]
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Nova |
2023 |
Gopaul U, Laver D, Carey L, Matyas T, van Vliet P, Callister R, 'Measures of Maximal Tactile Pressures during a Sustained Grasp Task Using a TactArray Device Have Satisfactory Reliability and Concurrent Validity in People with Stroke', Sensors, 23 (2023) [C1]
Sensor-based devices can record pressure or force over time during grasping and therefore offer a more comprehensive approach to quantifying grip strength during sustained contrac... [more]
Sensor-based devices can record pressure or force over time during grasping and therefore offer a more comprehensive approach to quantifying grip strength during sustained contractions. The objectives of this study were to investigate the reliability and concurrent validity of measures of maximal tactile pressures and forces during a sustained grasp task using a TactArray device in people with stroke. Participants with stroke (n = 11) performed three trials of sustained maximal grasp over 8 s. Both hands were tested in within- and between-day sessions, with and without vision. Measures of maximal tactile pressures and forces were measured for the complete (8 s) grasp duration and plateau phase (5 s). Tactile measures are reported using the highest value among three trials, the mean of two trials, and the mean of three trials. Reliability was determined using changes in mean, coefficients of variation, and intraclass correlation coefficients (ICCs). Pearson correlation coefficients were used to evaluate concurrent validity. This study found that measures of reliability assessed by changes in means were good, coefficients of variation were good to acceptable, and ICCs were very good for maximal tactile pressures using the average pressure of the mean of three trials over 8 s in the affected hand with and without vision for within-day sessions and without vision for between-day sessions. In the less affected hand, changes in mean were very good, coefficients of variations were acceptable, and ICCs were good to very good for maximal tactile pressures using the average pressure of the mean of three trials over 8 s and 5 s, respectively, in between-day sessions with and without vision. Maximal tactile pressures had moderate correlations with grip strength. The TactArray device demonstrates satisfactory reliability and concurrent validity for measures of maximal tactile pressures in people with stroke.
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Nova |
2023 |
Galloway M, Marsden DL, Callister R, Erickson KI, Nilsson M, English C, 'How little is enough? The feasibility of conducting a dose-escalation study for exercise training in people with stroke.', J Stroke Cerebrovasc Dis, 32 107190 (2023) [C1]
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Nova |
2023 |
Haslam RL, Baldwin JN, Pezdirc K, Truby H, Attia J, Hutchesson MJ, et al., 'Efficacy of technology-based personalised feedback on diet quality in young Australian adults: results for the advice, ideas and motivation for my eating (Aim4Me) randomised controlled trial.', Public Health Nutr, 26 1293-1305 (2023) [C1]
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Nova |
2023 |
Ingram I, Deane FP, Baker AL, Townsend CJ, Collins CE, Callister R, et al., 'The health of people attending residential treatment for alcohol and other drug use: Prevalence of and risks for major lifestyle diseases.', Drug Alcohol Rev, 42 1723-1732 (2023) [C1]
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Nova |
2022 |
Guillaumier A, Spratt N, Pollack M, Baker A, Magin P, Turner A, et al., 'Evaluation of an online intervention for improving stroke survivors' health-related quality of life: A randomised controlled trial', PLOS MEDICINE, 19 (2022) [C1]
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Nova |
2022 |
Peterson B, Hawke F, Spink M, Sadler S, Hawes M, Callister R, Chuter V, 'Biomechanical and Musculoskeletal Measurements as Risk Factors for Running-Related Injury in Non-elite Runners: A Systematic Review and Meta-analysis of Prospective Studies.', Sports Med Open, 8 38 (2022) [C1]
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Nova |
2022 |
Hedley KE, Callister RJ, Callister R, Horvat JC, Tadros MA, 'Alterations in brainstem respiratory centers following peripheral inflammation: A systematic review', JOURNAL OF NEUROIMMUNOLOGY, 369 (2022) [C1]
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Nova |
2022 |
Taylor R, Rollo ME, Baldwin JN, Hutchesson M, Aguiar EJ, Wynne K, et al., 'Evaluation of a Type 2 diabetes risk reduction online program for women with recent gestational diabetes: a randomised trial', INTERNATIONAL JOURNAL OF BEHAVIORAL NUTRITION AND PHYSICAL ACTIVITY, 19 (2022) [C1]
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Nova |
2022 |
Valkenborghs SR, Anderson SL, Scott HA, Callister R, 'Exercise Training Programs Improve Cardiorespiratory and Functional Fitness in Adults With Asthma A SYSTEMATIC REVIEW AND META-ANALYSIS', JOURNAL OF CARDIOPULMONARY REHABILITATION AND PREVENTION, 42 423-433 (2022) [C1]
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Nova |
2022 |
Drew RJ, Morgan PJ, Collins CE, Callister R, Kay-Lambkin F, Kelly BJ, Young MD, 'Behavioral and Cognitive Outcomes of an Online Weight Loss Program for Men With Low Mood: A Randomized Controlled Trial', Annals of Behavioral Medicine, 56 1026-1041 (2022) [C1]
Background: Depression and obesity are major health concerns and commonly co-exist, but men rarely seek help for these conditions. SHED-IT: Recharge was a gender-tailored eHealth ... [more]
Background: Depression and obesity are major health concerns and commonly co-exist, but men rarely seek help for these conditions. SHED-IT: Recharge was a gender-tailored eHealth program for men that generated clinically meaningful improvements in weight and depressive symptoms. Purpose: To evaluate behavioral and psychological outcomes from the SHED-IT: Recharge intervention designed for overweight/obese men with low mood. Methods: Overall, 125 men (18-70 years) with a BMI between 25 and 42 kg/m2 and depressive symptoms (PHQ-9 = 5) were randomly allocated to SHED-IT: Recharge (n = 62) or wait-list control (n = 63) groups. The self-directed program targeted key health behaviors combined with online mental fitness modules based on cognitive behavioral therapy. Behavioral (e.g., physical activity) and psychological outcomes (e.g., cognitive flexibility) were assessed with validated measures at baseline, 3 months (post-test) and 6 months (follow-up). Intention-to-treat linear mixed models examined treatment effects, which were adjusted for covariates, and effect size estimated (Cohen's d). Results: At post-test, intervention men achieved small-to-medium improvements in several health behavior outcomes including moderate-to-vigorous physical activity, light physical activity, sedentary behavior, sleep, energy intake, portion size, and risky alcohol consumption (range, d = 0.3-0.5), when compared with the control group. Intervention effects were also observed for perceived physical self-worth, perceived physical strength, cognitive flexibility, and behavioral activation (range, d = 0.3-0.8). No effects were found for fruit and vegetable intake, or mindful attention. Most effects were maintained at follow-up. Conclusions: This gender-tailored, eHealth program with integrated mental fitness support elicited meaningful improvements in health behaviors and psychological outcomes for men with low mood. Trial Registration: Australian New Zealand Clinical Trials Registry (ACTRN12619001209189).
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Nova |
2022 |
Clancy B, Bonevski B, English C, Baker AL, Turner A, Magin P, et al., 'Access to and Use of Internet and Social Media by Low-Morbidity Stroke Survivors Participating in a National Web-Based Secondary Stroke Prevention Trial: Cross-sectional Survey', Journal of Medical Internet Research, 24 e33291-e33291 [C1]
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Nova |
2022 |
Peterson B, Withers B, Hawke F, Spink M, Callister R, Chuter V, 'Outcomes of participation in parkrun, and factors influencing why and how often individuals participate: A systematic review of quantitative studies', JOURNAL OF SPORTS SCIENCES, 40 1486-1499 (2022) [C1]
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Nova |
2022 |
Peterson B, Searle A, Spink M, Hawke F, Callister R, Chuter V, 'Going their own way-male recreational runners and running-related injuries: A qualitative thematic analysis', PLOS ONE, 17 (2022) [C1]
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Nova |
2022 |
Baldwin JN, Haslam RL, Clarke E, Attia J, Hutchesson MJ, Rollo ME, et al., 'Eating Behaviors and Diet Quality: A National Survey of Australian Young Adults', Journal of Nutrition Education and Behavior, 54 397-405 (2022) [C1]
Objective: To investigate associations between eating behavior constructs (social eating, perceived competence, habit automaticity, self-determined motivation) and diet quality am... [more]
Objective: To investigate associations between eating behavior constructs (social eating, perceived competence, habit automaticity, self-determined motivation) and diet quality among young adults. Design: Cross-sectional analysis. Participants: Young adults (n = 1,005; mean age, 21.7 ± 2.0 years; 85% female) enrolled in the Advice, Ideas, and Motivation for My Eating (Aim4Me) study. Main outcome measures: Four eating behavior measures collected via online surveys: Social Eating Scale, Perceived Competence in Healthy Eating Scale, Self-Report Behavioral Automaticity Index, and Regulation of Eating Behaviors scales. Diet quality was assessed using the Australian Recommended Food Score (ARFS) and percentage energy from energy-dense, nutrient-poor (EDNP) foods. Analysis: Multivariate linear regression investigating associations between eating behavior measures (independent variables) and ARFS and EDNP foods (dependent variables), adjusting for sociodemographic and lifestyle confounders. Results: Greater perceived competence in healthy eating and behavioral automaticity for consuming healthy foods, limiting EDNP food intake, and higher intrinsic motivation, integrated regulation, and identified regulation of eating behaviors were associated with higher ARFS and lower percentage energy EDNP foods (P < 0.001). Greater self-reported social influence on eating behaviors was associated with higher ARFS (P = 0.01). Higher amotivation was associated with greater % energy from EDNP foods (P < 0.001). Conclusions and Implications: Perceived competence, habit automaticity, and self-determined motivation are determinants of diet quality in young adults. These findings support the development of interventions that promote healthy eating habits by focusing on eating behavior constructs and evaluating their use in improving diet quality.
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Nova |
2021 |
Clarke ED, Rollo ME, Collins CE, Wood L, Callister R, Schumacher T, Haslam RL, 'Changes in vegetable and fruit intakes and effects on anthropometric outcomes in males and females', Nutrition and Dietetics, 78 192-201 (2021) [C1]
Aim: To investigate associations between changes in vegetable and fruit (V&F) intakes and anthropometric indices (weight, BMI, % body fat, waist circumference), including diff... [more]
Aim: To investigate associations between changes in vegetable and fruit (V&F) intakes and anthropometric indices (weight, BMI, % body fat, waist circumference), including differences by sex, during a dietary weight-loss intervention. Methods: Adults (18-45 years) with overweight/obesity (BMI 25-35 kg/m2) entered a 10-week pre-post study, receiving individualised consults with an Accredited Practising Dietitian targeting increased V&F intakes. Dietary intake was assessed using 24-hour recalls and food frequency questionnaires. Linear mixed models were used to examine how much of the changes in anthropometric indices were explained by changes in V&F intakes. Sex differences were assessed by Wilcoxon rank sum tests. Results: Of the 43 participants enrolled, 34 completed the study (53% female). Significant differences in energy intake and anthropometric indices were observed between males and females at baseline. After 10 weeks, females significantly reduced their weight (-2.9%, P <.01), BMI (-0.82 kg/m2, P <.01), waist circumference (-1.70 cm, P <.01), energy intake (-824 kJ/day, P =.01) and improved diet quality (-14.0% energy-dense, nutrient-poor foods, P <.01). Males significantly reduced weight (-2.5%, P =.04), BMI (-0.76 kg/m2, P =.03), waist circumference (-2.40 cm, P =.02), energy intake (-2875 kJ/day, P <.01), increased fruit intake (+0.89 serves/day, P =.02) and improved diet quality (-6% energy-dense, nutrient-poor foods, P <.01). Compared to the other sex, greater reductions were observed in energy intake in males and energy-dense, nutrient-poor foods in females. Linear mixed models identified that changes in V&F intakes did not explain the variation in anthropometric measures. Conclusion: Future interventions may benefit from trialling sex tailored messages to enhance effects on anthropometric changes.
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Nova |
2021 |
Taylor RM, Haslam RL, Truby H, Attia J, Hutchesson MJ, Burrows T, et al., 'Do disparities exist between national food group recommendations and the dietary intakes of contemporary young adults?', NUTRITION & DIETETICS, 78 524-534 (2021) [C1]
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Nova |
2021 |
Drew RJ, Morgan PJ, Kay-Lambkin F, Collins CE, Callister R, Kelly BJ, et al., 'Men's Perceptions of a Gender-Tailored eHealth Program Targeting Physical and Mental Health: Qualitative Findings from the SHED-IT Recharge Trial', INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH, 18 (2021) [C1]
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Nova |
2021 |
Zelinski S, Manvell JJ, Manvell N, Callister R, Snodgrass SJ, 'Effect of Match Play on Shoulder Strength in Amateur Rugby Union Players', JOURNAL OF STRENGTH AND CONDITIONING RESEARCH, 35 2584-2590 (2021) [C1]
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Nova |
2021 |
Kelly PJ, Baker AL, Deane FP, Callister R, Collins CE, Oldmeadow C, et al., 'Healthy recovery: A stepped wedge cluster randomised controlled trial of a healthy lifestyle intervention for people attending residential alcohol and other drug treatment', Drug and Alcohol Dependence, 221 (2021) [C1]
Background: Unhealthy lifestyle behaviours contribute to the poor health of people attending alcohol and other drug (AOD) treatment. Healthy Recovery is an 8-session group-based i... [more]
Background: Unhealthy lifestyle behaviours contribute to the poor health of people attending alcohol and other drug (AOD) treatment. Healthy Recovery is an 8-session group-based intervention that targets smoking, diet and physical inactivity as part of an integrated healthy lifestyle approach. The current study aimed to examine the effectiveness of Healthy Recovery when delivered within residential AOD treatment settings. Methods: The study design was a stepped-wedge cluster randomised trial. Participants were 151 current smokers attending residential AOD programs provided by the Australian Salvation Army (n = 71, Control condition; n = 80, Intervention condition). The primary outcome was number of cigarettes smoked per day. Secondary outcomes examined other smoking behaviours (7-day point prevalence, use of nicotine replacement therapy [NRT]), diet (servings and variety of fruit and vegetables), and physical activity. Results: The mean number of cigarettes smoked per day was significantly lower in the Intervention condition at 2-, 5-, and 8-month follow-up. There were also significant differences in favour of the Intervention condition for number of quit attempts, use of NRT and variety of fruit. There were no other significant differences for other dietary or physical activity variables. Conclusions: Healthy Recovery had a positive impact on smoking behaviours. Future research should consider strategies to further promote smoking cessation (e.g. promoting longer-term use of NRT), as well as addressing physical activity and dietary behaviours. The introduction of broader organisational approaches (e.g. smoke free policies, organised group exercise and cooking activities) might help to enhance healthy lifestyle approaches within AOD treatment settings.
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Nova |
2021 |
Downs C, Snodgrass SJ, Weerasekara I, Valkenborghs SR, Callister R, 'Injuries in Netball-A Systematic Review', SPORTS MEDICINE-OPEN, 7 (2021) [C1]
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Nova |
2021 |
Young MD, Drew RJ, Kay-Lambkin F, Collins CE, Callister R, Kelly BJ, et al., 'Impact of a Self-Guided, eHealth Program Targeting Weight Loss and Depression in Men: A Randomized Trial', JOURNAL OF CONSULTING AND CLINICAL PSYCHOLOGY, 89 682-694 (2021) [C1]
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Nova |
2021 |
Snodgrass SJ, Ryan KE, Miller A, James D, Callister R, 'Relationship between Posture and Non-Contact Lower Limb Injury in Young Male Amateur Football Players: A Prospective Cohort Study', INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH, 18 (2021) [C1]
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Nova |
2020 |
Rollo ME, Baldwin JN, Hutchesson M, Aguiar EJ, Wynne K, Young A, et al., 'The feasibility and preliminary efficacy of an ehealth lifestyle program in women with recent gestational diabetes mellitus: A pilot study', International Journal of Environmental Research and Public Health, 17 1-24 (2020) [C1]
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Nova |
2020 |
Giles A, Nasstasia Y, Baker A, Kelly B, Dascombe B, Halpin S, et al., 'Exercise as Treatment for Youth With Major Depression: The Healthy Body Healthy Mind Feasibility Study', Journal of Psychiatric Practice, 26 444-460 (2020) [C1]
The goals of this study were to determine the feasibility of engaging youth with major depressive disorder (MDD) in a multimodal exercise intervention (Healthy Body Healthy Mind) ... [more]
The goals of this study were to determine the feasibility of engaging youth with major depressive disorder (MDD) in a multimodal exercise intervention (Healthy Body Healthy Mind) plus usual care and to evaluate the magnitude of its effects on psychological, physical fitness, and biomarker outcomes to inform a future randomized controlled trial. Youth (15 to 25 y of age) with MDD diagnosed using the Structured Clinical Interview for DSM-IV Axis I Disorders (SCID-I) were eligible to participate. Feasibility measures included recruitment, retention, and program adherence rates. The exercise program consisted of a single session of motivational interviewing to enhance exercise adherence, then 1-hour, small-group supervised exercise sessions 3 times per week for 12 weeks. Assessments were administered at baseline and at 12 weeks. Depression symptoms were assessed using the Beck Depression Inventory (BDI-II). Physical fitness and blood biomarkers were also measured. Three males and 10 females with MDD, who were 18 to 24 years of age, participated. Retention at 12 weeks was 86%, and attendance at exercise sessions averaged 62% ± 28%. After 12 weeks, 69% of participants experienced a remission of MDD based on the SCID. Mean BDI-II scores decreased from 31.9 ± 9.1 to 13.1 ± 10.1 [Cohen d effect size (ES) = 1.96]. Improvements were observed in upper (ES = 0.64) and lower (ES = 0.32) body muscular endurance. Exercise session attendance was moderately correlated with changes in BDI-II scores (Pearson r = 0.49). It appears feasible to attract and engage some youth with MDD in an exercise intervention. The positive impact on depression symptoms justifies further studies employing exercise interventions as an adjunct to routine care for young people with MDD.
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Nova |
2020 |
Kelly PJ, Baker AL, Fagan NL, Turner A, Deane F, McKetin R, et al., 'Better Health Choices: Feasability and preliminary effectiveness of a peer delivered healthy lifestyle intervention in a community mental health setting', Addictive Behaviors, 103 (2020) [C1]
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Nova |
2020 |
Falkenmire A, Manvell J, Callister R, Snodgrass S, 'Injury incidence, characteristics and timing in amateur male rugby union: A prospective cohort study', Journal of Human Sport and Exercise, 15 559-569 (2020) [C1]
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Nova |
2020 |
Quatela A, Patterson A, Callister R, MacDonald-Wicks L, 'Breakfast consumption habits of Australian men participating in the "Typical Aussie Bloke" study.', BMC nutrition, 6 (2020) [C1]
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Nova |
2020 |
Haslam RL, Pezdirc K, Truby H, Attia J, Hutchesson M, Burrows T, et al., 'Investigating the Efficacy and Cost-Effectiveness of Technology-Delivered Personalized Feedback on Dietary Patterns in Young Australian Adults in the Advice, Ideas, and Motivation for My Eating (Aim4Me) Study: Protocol for a Randomized Controlled Trial', JMIR RESEARCH PROTOCOLS, 9 (2020)
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2020 |
Clarke ED, Rollo ME, Collins CE, Wood L, Callister R, Philo M, et al., 'The Relationship between Dietary Polyphenol Intakes and Urinary Polyphenol Concentrations in Adults Prescribed a High Vegetable and Fruit Diet', Nutrients, 12 (2020) [C1]
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Nova |
2020 |
Hutchesson M, Taylor R, Shrewsbury V, Vincze L, Campbell L, Callister R, et al., 'Be Healthe for Your Heart: A Pilot Randomized Controlled Trial Evaluating a Web-Based Behavioral Intervention to Improve the Cardiovascular Health of Women with a History of Preeclampsia', International Journal of Environmental Research and Public Health, 17 1-17 (2020) [C1]
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Nova |
2020 |
Moghaddas D, Snodgrass S, Young JL, Callister R, 'Evaluation of Community Exercise Classes for Cardiovascular Diseases', Journal of Clinical Exercise Physiology, 9 52-58 (2020) [C1]
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Nova |
2019 |
Ashton L, Williams R, Wood L, Schumacher T, Burrows T, Rollo M, et al., 'The comparative validity of a brief diet screening tool for adults: The Fruit And Vegetable VAriety index (FAVVA)', Clinical Nutrition ESPEN, 29 189-197 (2019) [C1]
Background & aims: A brief assessment tool on frequency and variety of fruit and vegetable intake could provide a cost-effective and sustainable approach to improving diet. Th... [more]
Background & aims: A brief assessment tool on frequency and variety of fruit and vegetable intake could provide a cost-effective and sustainable approach to improving diet. The primary aim was to evaluate the comparative validity of a brief index of Fruit And Vegetable VAriety (FAVVA) relative to food and nutrient intakes derived from a comprehensive food frequency questionnaire (FFQ). The secondary aim was to evaluate the FAVVA index in relation to fasting plasma carotenoid concentrations. Methods: Dietary intakes and fasting plasma carotenoid concentrations of 99 overweight and obese adults (49.5% female; 44.6 ± 9.9 years) were assessed at baseline and 3-months. Food and nutrient intakes were assessed using the Australian Eating Survey (AES) FFQ. The FAVVA index was derived from a sub-set of 35 AES questions related to fruit and vegetable intake frequency and variety. Associations were assessed using Spearman's correlation coefficients and linear regression analysis, and agreement using weighted kappa (K w ). Results: Total FAVVA score demonstrated moderate to strong, significant (all p < 0.01) correlations with total daily intakes of vegetables (r = 0.75), vitamin C (r = 0.71), fruit (r = 0.66), vitamin A (r = 0.49), fibre (r = 0.49), potassium (r = 0.46), magnesium (r = 0.39), iron (r = 0.26), riboflavin (r = 0.24), calcium (r = 0.23), zinc (r = 0.20) and niacin equivalent (r = 0.20). These associations remained significant in the adjusted regression analyses and agreement testing. Total FAVVA was significantly correlated with plasma carotenoid concentrations (µg/dL) of a¿carotene (r = 0.22, p < 0.01), ß¿carotene (r = 0.26, p < 0.001), ß¿cryptoxanthin (r = 0.22, p < 0.01) and total carotenoids (r = 0.18, p < 0.05). The associations with a¿carotene (ß = 0.09, p < 0.001), ß¿carotene (ß = 0.42, p < 0.05) and total plasma carotenoids (ß = 0.85, p < 0.05) remained significant in the adjusted regression analyses and for agreement testing. Conclusions: FAVVA is suitable as a brief tool to rank frequency and variety of fruit and vegetable intake.
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Nova |
2019 |
Dyer CS, Callister R, Sanctuary CE, Snodgrass SJ, 'Functional Movement Screening and injury risk in elite adolescent rugby league players', International Journal of Sports Science and Coaching, 14 498-506 (2019) [C1]
Research is limited as to whether Functional Movement Screen scores relate to non-contact injury risk in rugby league players. This cohort study investigates whether the Functiona... [more]
Research is limited as to whether Functional Movement Screen scores relate to non-contact injury risk in rugby league players. This cohort study investigates whether the Functional Movement Screen score predicts non-contact injuries in elite adolescent rugby league players. Australian adolescent rugby league players (n = 52; mean age 16.0 ± 1.0 years) from one club participated in this study. Functional Movement Screen scores, height, and mass were collected at the beginning of the preseason. Training, match exposure, and injury incidence data (non-contact match and training injuries with three levels of severity) were recorded for each individual athlete throughout the season. Linear and logistic regression analyses were conducted to investigate the association between Functional Movement Screen score (continuous score, = 14 or > 14, and three subscores) and injury risk, whilst controlling for exposure time. The mean Functional Movement Screen score for the sample was 13.4 (95% CI: 11.0¿14.0). A total of 72 non-contact injuries were recorded (incidence rate: 18.7 per 1000 exposure hours; 95% CI: 11.6¿24.8). There were no statistically significant associations between non-contact injury and Functional Movement Screen score for any of the analyses conducted. Our results suggest that the Functional Movement Screen does not reflect non-contact injury risk in elite adolescent rugby league players. Further research should investigate whether a more sport-specific movement screen in the preseason can more effectively predict injury risk in this population.
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Nova |
2019 |
Gopaul U, van Vliet P, Callister R, Nilsson M, Carey L, 'COMbined Physical and somatoSEnsory training after stroke: Development and description of a novel intervention to improve upper limb function', Physiotherapy Research International, 24 1-12 (2019) [C1]
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Nova |
2019 |
Galloway M, Marsden DL, Callister R, Erickson KI, Nilsson M, English C, 'What is the dose-response relationship between exercise and cardiorespiratory fitness after stroke? A systematic review', Physical Therapy, 99 821-832 (2019) [C1]
Background. Exercise after stroke improves cardiorespiratory fitness and walking capacity; however, the effect of altering exercise dose (via frequency, intensity, time, and type)... [more]
Background. Exercise after stroke improves cardiorespiratory fitness and walking capacity; however, the effect of altering exercise dose (via frequency, intensity, time, and type) on fitness or walking capacity is unclear. Purpose. The purpose of this study was to synthesize the current evidence for the effects of different doses of exercise on cardiorespiratory fitness and walking capacity in people after stroke. Data Sources. Seven relevant electronic databases were searched using keywords relating to stroke and cardiorespiratory fitness. Study Selection. Trials that compared more than 1 dose of exercise for people (? 18 years old) after stroke and measured peak oxygen consumption or 6-minute walk test distance as an outcome were included. Two reviewers independently appraised all trials. Data Extraction. Two reviewers independently extracted data from included articles. Intervention variables were extracted in accordance with the Template for Intervention Description and Replication checklist. Data Synthesis. Data were synthesized narratively. Nine trials involving 279 participants were included. Three of 5 trials comparing exercise intensity showed that higherintensity training was associated with greater improvements in cardiorespiratory fitness. The effects of other exercise dose components (frequency, time, and type) on fitness were not determined. Overall, walking capacity improved as program length increased. Limitations. All trials had a high risk of bias, and most had a high rate of attrition. Most trials included people more than 6 months after stroke and who walked independently, limiting the generalizability of the findings. Conclusions. Exercising at an intensity greater than 70% of heart rate reserve can be more effective in increasing cardiorespiratory fitness after stroke than exercising at lower intensities. More trials that compare exercise doses by manipulating only 1 dose parameter at a time for people after stroke are needed.
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Nova |
2019 |
Harbury C, Collins CE, Callister R, 'Diet quality is lower among adults with a BMI =40 kg m -2 or a history of weight loss surgery', Obesity Research and Clinical Practice, 13 197-204 (2019) [C1]
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Nova |
2019 |
Gopaul U, Laver D, Carey L, Matyas TA, van Vliet P, Callister R, 'Measures of maximal tactile pressures of a sustained grasp task using a TactArray device have satisfactory reliability and validity in healthy people', SOMATOSENSORY AND MOTOR RESEARCH, 36 249-261 (2019) [C1]
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Nova |
2019 |
Valkenborghs SR, Callister R, Visser MM, Nilsson M, van Vliet P, 'Interventions combined with task-specific training to improve upper limb motor recovery following stroke: a systematic review with meta-analyses', Physical Therapy Reviews, 24 1-19 (2019) [C1]
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Nova |
2019 |
Taylor R, Shrewsbury VA, Vincze L, Campbell L, Callister R, Park F, et al., 'Be Healthe for Your Heart: Protocol for a Pilot Randomized Controlled Trial Evaluating a Web-Based Behavioral Intervention to Improve the Cardiovascular Health of Women With a History of Preeclampsia', FRONTIERS IN CARDIOVASCULAR MEDICINE, 6 (2019)
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2019 |
Dunn A, Marsden DL, Barker D, van Vliet P, Spratt NJ, Callister R, 'Evaluation of three measures of cardiorespiratory fitness in independently ambulant stroke survivors', Physiotherapy Theory and Practice, 35 622-632 (2019) [C1]
Measuring cardiorespiratory fitness (CRF) in the stroke population is challenging. Currently, the recommended method is a graded exercise test (GXT) on an ergometer such as a trea... [more]
Measuring cardiorespiratory fitness (CRF) in the stroke population is challenging. Currently, the recommended method is a graded exercise test (GXT) on an ergometer such as a treadmill or cycle, which may not always be possible. We investigated whether walking tests such as the six-minute walk test (6MWT) and the shuttle walk test (SWT) may be appropriate indicators of CRF in the stroke population. Twenty-three independently ambulant stroke survivors (11 men, age 61.5¿±¿18.4¿years) within one-year post stroke performed the 6MWT, SWT, and cycle GXT, during which peak oxygen consumption (VO2peak) and heart rate (HRpeak) were recorded. There were no differences (p¿>¿0.05) in mean VO2peak among the three tests (min-max: 17.08¿18.09¿mL¿kg-1¿min-1). For individuals, small discrepancies in VO2peak between the 6MWT and other tests were greater with higher fitness levels. HRpeak was significantly (p¿=¿0.005) lower during the 6MWT. Correlations between VO2peak and performance measures within each test were high (6MWT VO2peak and distance: r¿=¿0.78, SWT VO2peak and shuttles: r¿=¿0.73, cycle GXT VO2peak and workload: r¿=¿0.77) suggesting the performance measures may be clinically useful as proxy measures of CRF. Common comorbidities, such as lower-limb joint pain and poor balance, and participant¿s fastest walking speed, should inform the choice of CRF test.
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Nova |
2019 |
Gallowayphd M, Marsden DL, Callister R, Nilsson M, Erickson KI, English C, 'The feasibility of a telehealth exercise program aimed at increasing cardiorespiratory fitness for people after stroke', International Journal of Telerehabilitation, 11 9-28 (2019) [C1]
Background: Accessing suitable fitness programs post-stroke is difficult for many. The feasibility of telehealth delivery has not been previously reported. Objectives: To assess t... [more]
Background: Accessing suitable fitness programs post-stroke is difficult for many. The feasibility of telehealth delivery has not been previously reported. Objectives: To assess the feasibility of, and level of satisfaction with home-based telehealth-supervised aerobic exercise training post-stroke. Methods: Twenty-one ambulant participants (= 3 months post-stroke) participated in a home-based telehealth-supervised aerobic exercise program (3 d/week, moderate-vigorous intensity, 8-weeks) and provided feedback via questionnaire post-intervention. Session details, technical issues, and adverse events were also recorded. Results: Feasibility was high (83% of volunteers met telehealth eligibility criteria, 85% of sessions were conducted by telehealth, and 95% of participants rated usability favourably). Ninety-five percent enjoyed telehealth exercise sessions and would recommend them to others. The preferred telehealth exercise program parameters were: frequency 3 d/week, duration 20-30 min/session, program length 6-12 weeks. Conclusion: The telehealth delivery of exercise sessions to people after stroke appears feasible and may be considered as a viable alternative delivery means for providing supervised exercise post-stroke.
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Nova |
2019 |
Nasstasia Y, Baker AL, Lewin TJ, Halpin SA, Hides L, Kelly BJ, Callister R, 'Differential treatment effects of an integrated motivational interviewing and exercise intervention on depressive symptom profiles and associated factors: A randomised controlled cross-over trial among youth with major depression', Journal of Affective Disorders, 259 413-423 (2019) [C1]
Background: Exercise is increasingly recognised as an efficacious intervention for major depressive disorder (MDD) but to our knowledge differential treatment effects on depressiv... [more]
Background: Exercise is increasingly recognised as an efficacious intervention for major depressive disorder (MDD) but to our knowledge differential treatment effects on depressive symptom profiles (cognitive, somatic and affective) and associated changes in psychological, physiological and behavioural factors have not been examined among youth with MDD. Methods: Sixty-eight participants (mean age 20.8) meeting DSM-IV diagnostic criteria for MDD were randomised to an Immediate intervention or Control/delayed condition (n = 34 per group). The integrated intervention comprised an initial session of motivational interviewing (MI) followed by a 12-week, multi-modal exercise program. Changes in depressive symptom profiles were assessed with the Beck Depression Inventory-II (BDI-II) total score and factorial symptom subscales. Results: There were significant differential improvements in BDI-II total scores post-treatment among intervention participants, which were also observed across the cognitive and affective subscales. Individual BDI-II items from the cognitive subscale showing significant differential improvement related to negative self-concept, while those from the affective subscale related to interest/activation; the energy item within the somatic subscale also revealed significant differential improvement. Significant differential improvements were also observed in exercise participation, negative automatic thoughts, behavioural activation and bench press repetitions among intervention participants, which correlated significantly with depression improvements. Limitations: The exercise intervention was delivered in a supervised, group format and potential social meditators of change cannot be excluded. Conclusions: Exercise differentially effects depressive symptom profiles with similar antidepressant effects as would be expected from psychological therapies improving negative cognition and emotional health.
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Nova |
2019 |
Valkenborghs SR, Erickson KI, Nilsson M, van Vliet P, Callister R, 'Feasibility of Aerobic Interval Training in Nonambulant Persons after Stroke', Journal of Clinical Exercise Physiology, 8 97-101 (2019) [C1]
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Nova |
2019 |
Mackie P, Crowfoot G, Janssen H, Dunstan DW, Bernhardt J, Walker FR, et al., 'Breaking up sitting time after stroke - How much less sitting is needed to improve blood pressure after stroke (BUST-BP-Dose): Protocol for a dose-finding study', CONTEMPORARY CLINICAL TRIALS COMMUNICATIONS, 13 (2019)
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2019 |
Valkenborghs SR, van Vliet P, Nilsson M, Zalewska K, Visser MM, Erickson KI, Callister R, 'Aerobic exercise and consecutive task-specific training (AExaCTT) for upper limb recovery after stroke: A randomized controlled pilot study', Physiotherapy Research International, 24 1-11 (2019) [C1]
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Nova |
2019 |
Langdon E, Snodgrass SJ, Young JL, Miller A, Callister R, 'Posture of rugby league players and its relationship to non-contact lower limb injury: A prospective cohort study', Physical Therapy in Sport, 40 27-32 (2019) [C1]
Objective: This study aimed to identify posture deviations in rugby league players, and to observe relationships between posture and the incidence of non-contact lower limb injury... [more]
Objective: This study aimed to identify posture deviations in rugby league players, and to observe relationships between posture and the incidence of non-contact lower limb injury. Design: Prospective cohort. Setting: Laboratory and on-field. Participants: Junior representative, semi-professional and professional rugby league players (n = 207). Main outcome measures: Static posture scores from photographs (Watson and MacDonncha tool) in pre-season; non-contact lower limb injury surveillance and exposure data. Methods: Chi-square and logistic regression analyses were used to observe relationships between postural components and the incidence of non-contact lower limb injury. Results: 8.7% of players sustained a quadriceps injury; 7.2% sustained a calf injury. Semi-professional and professional players had the highest injury rates. The most common posture deviations were having a forward shoulder position (46.9%), a forward head position (33.3%), a varus knee interspace (32.9%) or a lumbar lordosis (30.9%). A moderate C-scoliosis deviation was associated with a decrease in injury risk (OR 1.57 95% CI 1.00-2.46 p = 0.052). Included in the model was player weight, which was associated with an increased risk of injury (OR 1.04 95% CI 1.01-1.07 p = 0.010). Conclusions: Although postural deviations are common in rugby league players, given the lack of association with injury, they may not warrant intervention.
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Nova |
2019 |
Guillaumier A, McCrabb S, Spratt NJ, Pollack M, Baker AL, Magin P, et al., 'An online intervention for improving stroke survivors' health-related quality of life: study protocol for a randomised controlled trial', TRIALS, 20 (2019)
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2019 |
Denham AMJ, Guillaumier A, McCrabb S, Turner A, Baker AL, Spratt NJ, et al., 'Development of an online secondary prevention programme for stroke survivors: Prevent 2nd Stroke', BMJ Innovations, 5 35-42 (2019) [C1]
Background Stroke events often result in long-term negative health outcomes. People who experience a first stroke event are 30%-40% more likely to experience a second stroke event... [more]
Background Stroke events often result in long-term negative health outcomes. People who experience a first stroke event are 30%-40% more likely to experience a second stroke event within 5 years. An online secondary prevention programme for stroke survivors may help stroke survivors improve their health risk behaviours and lower their risk of a second stroke. Objectives This paper describes the development and early iteration testing of the usability and acceptability of an online secondary prevention programme for stroke survivors (Prevent 2nd Stroke, P2S). P2S aims to address six modifiable health risk behaviours of stroke: blood pressure, physical activity, nutrition, depression and anxiety, smoking, and alcohol consumption. Methods P2S was developed as an eight-module online secondary prevention programme for stroke survivors. Modelled on the DoTTI (Design and development, Testing early iterations, Testing for effectiveness, Integration and implementation) framework for the development of online programmes, the following stages were followed during programme development: (1) content development and design; and (2) testing early iteration. The programme was pilot-tested with 15 stroke survivors who assessed P2S on usability and acceptability. Results In stage 1, experts provided input for the content development of P2S. In stage 2, 15 stroke survivors were recruited for usability testing of P2S. They reported high ratings of usability and acceptability of P2S. P2S was generally regarded as easy to use' and relevant to stroke survivors'. Participants also largely agreed that it was appropriate to offer lifestyle advice to stroke survivors through the internet. Conclusions The study found that an online secondary prevention programme was acceptable and easily usable by stroke survivors. The next step is to conduct a randomised controlled trial to assess the effectiveness of the programme regarding behaviour change and determine the cost-effectiveness of the intervention.
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Nova |
2019 |
Vincze L, Rollo M, Hutchesson M, Hauck Y, MacDonald-Wicks L, Wood L, et al., 'Interventions including a nutrition component aimed at managing gestational weight gain or postpartum weight retention: A systematic review and meta-analysis', JBI Database of Systematic Reviews and Implementation Reports, 17 297-364 (2019) [C1]
Objectives:The objective of this systematic review was to evaluate the effectiveness of interventions that include a nutrition component aimed at improving gestational weight gain... [more]
Objectives:The objective of this systematic review was to evaluate the effectiveness of interventions that include a nutrition component aimed at improving gestational weight gain and/or postpartum weight retention.Introduction:Excessive gestational weight gain and postpartum weight retention increase the risk of adverse maternal and neonatal outcomes. Current evidence comprises many interventions targeting gestational weight gain and postpartum weight retention that incorporate a nutrition component. To date, no review has synthesized evidence from pregnancy through the postpartum period or described the intervention approaches in detail.Inclusion criteria:The review included women (=18 years) during pregnancy and/or up to 12 months postpartum. Studies were included if they involved a weight management intervention with a nutrition component and had the primary objective of determining the impact of gestational weight gain and/or postpartum weight change. Interventions were compared to usual care (i.e. control conditions with no intervention or wait-list control or standard pregnancy or postpartum care) or "other" (alternative intervention). The review considered randomized controlled trials published between 1980 and January 21, 2016. Studies that included a weight related primary outcome measured during pregnancy and/or postpartum were included.Methods:Seven databases were searched and the reference lists of included studies were searched for additional studies not previously identified. Two independent reviewers assessed the methodological quality of studies using the Joanna Briggs Institute Meta-Analysis of Statistics Assessment and Review Instrument (JBI SUMARI). The JBI SUMARI standardized data extraction tool was used to extract data. A narrative synthesis was undertaken to qualitatively synthesize included studies, with meta-analyses used to pool weight outcome data from studies conducted separately for pregnancy and postpartum. Effect sizes for meta-analyses have been expressed as weighted mean differences (95% confidence intervals).Results:The search yielded 4063 articles of which 48 articles from 39 studies were included. Eleven of 20 studies during pregnancy reported significant reductions in gestational weight gain with the intervention when compared to control groups. One of five studies where the intervention was conducted during both pregnancy and postpartum reported statistically significant reductions in gestational weight gain, and postpartum weight retention between intervention and control groups. Nine of 14 studies conducted after childbirth reported statistically significant intervention effects, indicating lesser postpartum weight retention. Random effects meta-analyses indicated that despite considerable heterogeneity, interventions conducted during pregnancy (-1.25 kg; 95% CI:-2.10 kg,-0.40 kg; p = 0.004), and postpartum (-3.25 kg; 95% CI:-4.69 kg,-1.82 kg; p < 0.001) were significantly more effective at improving weight outcomes compared to usual care or other interventions. Most studies were of moderate quality due to lack of clarity in describing study details required for appraising methodological quality. Few interventions were conducted from pregnancy through the postpartum period (n = 5). Limited interventions adopted online modalities in intervention delivery (n = 4). Intention-to-treat analysis was used in only 12 studies.Conclusions:The pregnancy and postpartum period presents a unique opportunity to engage women in interventions to help optimize lifestyle behaviors for weight management, however the optimal approach is unclear. Improving consistency in intervention implementation and reporting will improve future evidence synthesis.
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Nova |
2019 |
English C, Patterson A, MacDonald-Wicks L, Attia J, Callister R, Hillier S, et al., 'ENAbLE: Secondary prevention of stroke. A physical activity and diet trial protocol', International Journal of Stroke, 14 12-12 (2019)
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2019 |
Nasstasia Y, Baker AL, Lewin TJ, Halpin SA, Hides L, Kelly BJ, Callister R, 'Engaging youth with major depression in an exercise intervention with motivational interviewing', Mental Health and Physical Activity, 17 (2019) [C1]
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Nova |
2019 |
Kelly PJ, Baker AL, Townsend CJ, Deane FP, Callister R, Collins CE, et al., 'Healthy Recovery: A Pilot Study of a Smoking and Other Health Behavior Change Intervention for People Attending Residential Alcohol and Other Substance Dependence Treatment', JOURNAL OF DUAL DIAGNOSIS, 15 207-216 (2019) [C1]
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Nova |
2019 |
Hanna E, Janssen H, Crowfoot G, Mason G, Vyslysel G, Sweetapple A, et al., 'Participation, Fear of Falling, and Upper Limb Impairment are Associated with High Sitting Time in People with Stroke', OCCUPATIONAL THERAPY IN HEALTH CARE, 33 181-196 (2019) [C1]
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Nova |
2019 |
Morgan PJ, Collins CE, Lubans DR, Callister R, Lloyd AB, Plotnikoff RC, et al., 'Twelve-month outcomes of a father-child lifestyle intervention delivered by trained local facilitators in underserved communities: The Healthy Dads Healthy Kids dissemination trial', Translational Behavioral Medicine, 9 560-569 (2019) [C1]
Healthy Dads Healthy Kids (HDHK) was the first program internationally to specifically target overweight and obese fathers to improve their children's health. In previous ran... [more]
Healthy Dads Healthy Kids (HDHK) was the first program internationally to specifically target overweight and obese fathers to improve their children's health. In previous randomized controlled trials, HDHK generated meaningful short-Term improvements in the adiposity, physical activity, and eating behaviors of both fathers and children. The aim of this dissemination trial was to evaluate the 12-month impact of HDHK when delivered by trained facilitators across four low socioeconomic and regional communities in the Hunter Region, Australia. The study was a nonrandomized, prospective trial with minimal eligibility criteria (i.e., father body mass index [BMI] ? 25 kg/m2 and children aged 4-12 years). HDHK included eight weekly practical and theoretical sessions. Assessments were baseline, 3 months (post-intervention), 6-months, and 12-months. The primary outcome was fathers' weight. Secondary outcomes included child BMI z-score and validated lifestyle behavior measures (e.g., physical activity, diet). Overall, 189 fathers (mean age: 40.2 years, BMI: 32.6 kg/m2) and 306 children (mean age: 8.1 years) participated in one of 10 HDHK programs in four areas. Intention-To-Treat linear mixed models revealed a significant mean reduction in fathers' weight at post-intervention (?3.6 kg, 95% confidence interval: ?4.3, ?2.9), which was maintained at 12 months (71% retention). Corresponding improvements were also detected in children's BMI z-score and a range of lifestyle behaviors for both fathers and children. Attendance and satisfaction levels were high. Positive intervention effects observed in previous randomized controlled trials were largely replicated and sustained for 12 months when HDHK was delivered by trained local facilitators in underserved communities. Further investigation into the key systems, processes, and contextual factors required to deliver HDHK at scale appears warranted.
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Nova |
2018 |
Quatela A, Callister R, Patterson AJ, McEvoy M, MacDonald-Wicks LK, 'The protective effect of muesli consumption on diabetes risk: Results from 12 years of follow-up in the Australian Longitudinal Study on Women's Health', Nutrition Research, 51 12-20 (2018) [C1]
Diabetes affects 9.8% of Australian women. Breakfast cereal consumption is potentially protective against diabetes. This study investigated the effects of breakfast cereal consump... [more]
Diabetes affects 9.8% of Australian women. Breakfast cereal consumption is potentially protective against diabetes. This study investigated the effects of breakfast cereal consumption on the 12-year risk of developing diabetes among mid-aged participants of the Australian Longitudinal Study of Women's Health (ALSWH). It was hypothesized that any breakfast cereal and higher-fiber breakfast cereals would be protective against the risk of developing diabetes. Data from Survey 3 (S3) to Survey 7 (S7) inclusive, from the 1946-51 ALSWH cohort were analyzed. Dietary data were obtained at S3 and the outcome was incident diabetes between S4-S7. Women were excluded if: they reported existing diabetes or impaired glucose tolerance at S3; dietary data were incomplete; or daily energy intake was <4,500 or >20,000 kJ. Logistic regression with discrete time survival analyses investigated the association between breakfast cereal intake and incident diabetes. Models were adjusted for income, BMI, smoking, physical activity, education, and dietary intakes and included a measure of time. There were 637 incident cases of diabetes. Breakfast cereal intake per se was not associated with incident diabetes (OR: 1.00; P =.98). Muesli consumption on its own (OR: 0.74; P =.00) or as a part of oats-based cereal (OR: 0.84; P =.047) was significantly associated with a decrease in the odds of developing diabetes. No other breakfast cereals were significantly associated with diabetes risk. Among mid-aged Australian women, muesli consumption was associated with a reduction in diabetes risk. This effect may be due to a particular profile of muesli eaters, but the relationship warrants further investigation.
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Nova |
2018 |
Harries SK, Lubans DR, Buxton A, MacDougall THJ, Callister R, 'Effects of 12-Week Resistance Training on Sprint and Jump Performances in Competitive Adolescent Rugby Union Players.', Journal of strength and conditioning research, 32 2762-2769 (2018) [C1]
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Nova |
2018 |
Rank MM, Galea MP, Callister R, Callister RJ, 'Is more always better? How different doses of exercise after incomplete spinal cord injury affects the membrane properties of deep dorsal horn interneurons', Experimental Neurology, 300 201-211 (2018) [C1]
Interneurons in the deep dorsal horn (DDH) of the spinal cord process somatosensory input, and form an important link between upper and lower motoneurons to subsequently shape mot... [more]
Interneurons in the deep dorsal horn (DDH) of the spinal cord process somatosensory input, and form an important link between upper and lower motoneurons to subsequently shape motor output. Exercise training after SCI is known to improve functional motor recovery, but little is known about the mechanisms within spinal cord neurons that underlie these improvements. Here we investigate how the properties of DDH interneurons are affected by spinal cord injury (SCI) alone, and SCI in combination with different ¿doses¿ of treadmill exercise training (3, 6, and 9 wks). In an adult mouse hemisection model of SCI we used whole-cell patch-clamp electrophysiology to record intrinsic, AP firing and gain modulation properties from DDH interneurons in a horizontal spinal cord slice preparation. We find that neurons within two segments of the injury, both ipsi- and contralateral to the hemisection, are similarly affected by SCI and SCI plus exercise. The passive intrinsic membrane properties input resistance (Rin) and rheobase are sensitive to the effects of recovery time and exercise training after SCI thus altering DDH interneuron excitability. Conversely, select active membrane properties are largely unaffected by either SCI or exercise training. SCI itself causes a mismatch in the expression of voltage-gated subthreshold currents and AP discharge firing type. Over time after SCI, and especially with exercise training (9 wks), this mismatched expression is exacerbated. Lastly, amplification properties (i.e. gain of frequency-current relationship) of DDH interneurons are altered by SCI alone and recover spontaneously with no clear effect of exercise training. These results suggest a larger ¿dose¿ of exercise training (9 wks) has a strong and selective effect on specific membrane properties, and on the output of interneurons in the vicinity of a SCI. These electrophysiological data provide new insights into the plasticity of DDH interneurons and the mechanisms by which exercise therapy after SCI can improve recovery.
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Nova |
2018 |
Harbury CM, Callister R, Collins C, 'Nutrition "fat facts" are not common knowledge', Health Promotion Journal of Australia, 29 93-99 (2018) [C1]
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Nova |
2018 |
Vincze L, Rollo ME, Hutchesson MJ, Callister R, Thompson DI, Collins CE, 'Postpartum Women's Perspectives of Engaging with a Dietitian and Exercise Physiologist via Video Consultations for Weight Management: A Qualitative Evaluation.', Healthcare, 6 1-17 (2018) [C1]
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Nova |
2018 |
Nasstasia Y, Baker AL, Halpin SA, Hides L, Lewin TJ, Kelly BJ, Callister R, 'Evaluating the efficacy of an integrated motivational interviewing and multi-modal exercise intervention for youth with major depression: Healthy Body, Healthy Mind randomised controlled trial protocol', Contemporary Clinical Trials Communications, 9 13-22 (2018) [C1]
Background Recent meta-analytic reviews suggest exercise can reduce depression severity among adults with major depressive disorder (MDD); however, efficacy studies with depressed... [more]
Background Recent meta-analytic reviews suggest exercise can reduce depression severity among adults with major depressive disorder (MDD); however, efficacy studies with depressed youth are limited. Few studies have investigated the efficacy of multi-modal exercise interventions in this population, addressed treatment engagement, or explored the differential effects of exercise on depressive symptom profiles. Objectives This paper describes the study protocol and recruitment pattern for an assessor blinded, two-arm randomised controlled trial investigating the efficacy of an integrated motivational interviewing (MI) and multi-modal exercise intervention in youth diagnosed with MDD. Associations between depressive symptom profiles (cognitive, somatic and affective) and psychological, physiological (fitness), and biological (blood biomarker) outcomes will also be examined. Methods Participants aged 15¿25 years with current MDD were recruited. Eligible participants were randomised and stratified according to gender and depression severity to either an immediate or delayed (control) group. The immediate group received a brief MI intervention followed by a 12-week small group exercise intervention (3 times per week for 1 h), all delivered by personal trainers. The delayed control group received the same intervention 12-weeks later. Both groups were reassessed at mid-treatment or mid-control, post-treatment or post-control, and follow-up (12 weeks post-treatment). Results 68 participants were recruited and randomly allocated to an intervention group. Conclusion This trial will increase our understanding of the efficacy of multi-modal exercise interventions for depression and the specific effects of exercise on depressive symptom profiles. It also offers a novel contribution by addressing treatment engagement in exercise efficacy trials in youth with MDD.
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Nova |
2018 |
Gopaul U, Carey L, Callister R, Nilsson M, van Vliet P, 'Combined somatosensory and motor training to improve upper limb function following stroke: a systematic scoping review', Physical Therapy Reviews, 23 355-375 (2018) [C1]
Purpose: The purpose of this systematic scoping review was to (1) identify combined somatosensory and motor training interventions for the upper limb and their training components... [more]
Purpose: The purpose of this systematic scoping review was to (1) identify combined somatosensory and motor training interventions for the upper limb and their training components, and (2) review the efficacy of the combined interventions. Methods: Participants were adults post-stroke with somatosensory and/or movement deficits in the upper limb. All studies with interventions combining somatosensory and motor training and targeting the affected upper limb were included. Outcome measures were assessments of somatosensory and/or motor impairment and upper limb function. Results: Ten studies (n = 219) were included, comprising three randomized controlled trials, two pre-post studies with non-randomized comparison groups, three single-case experimental studies, and two case reports. There was heterogeneity across studies with regards to intervention contents and dosage, participant characteristics, and outcome measures. The interventions included combinations of tactile stimulation/discrimination, proprioceptive stimulation/discrimination, haptic object discrimination/recognition, movement training, and functional training. Only one group study, a non-randomized controlled study with multiple active components and the largest dose of treatment, found significant improvements in fine motor and somatosensory measures. Some improvements were found in case studies. Conclusion: There was little consistency across ¿combined somatosensory and motor training¿ interventions and few have been rigorously tested for efficacy across somatosensory, motor and functional outcomes.
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Nova |
2018 |
English C, Janssen H, Crowfoot G, Bourne J, Callister R, Dunn A, et al., 'Frequent, short bouts of light-intensity exercises while standing decreases systolic blood pressure: Breaking Up Sitting Time after Stroke (BUST-Stroke) trial', International Journal of Stroke, 13 932-940 (2018) [C1]
Background: Stroke survivors sit for long periods each day. Uninterrupted sitting is associated with increased risk of cardiovascular disease. Breaking up uninterrupted sitting wi... [more]
Background: Stroke survivors sit for long periods each day. Uninterrupted sitting is associated with increased risk of cardiovascular disease. Breaking up uninterrupted sitting with frequent, short bouts of light-intensity physical activity has an immediate positive effect on blood pressure and plasma clotting factors in healthy, overweight, and type 2 diabetic populations. Aim: We examined the effect of frequent, short bouts of light-intensity physical activity on blood pressure and plasma fibrinogen in stroke survivors. Methods: Prespecified secondary analyses from a three-armed randomized, within-participant, crossover trial. Participants were 19 stroke survivors (nine female, aged 68 years old, 90% able to walk independently). The experimental conditions were sitting for 8 h uninterrupted, sitting with 3 min bouts of light-intensity exercise while standing every 30 min, or sitting with 3 min of walking every 30 min. Blood pressure was measured every 30 min over 8 h and plasma fibrinogen at the beginning, middle, and end of each day. Intention-to-treat analyses were performed using linear mixed models including fixed effects for condition, period, and order, and a random intercept for participant to account for repeated measures and missing data. Results: Sitting with 3 min bouts of light-intensity exercise while standing every 30 min decreased systolic blood pressure by 3.5 mmHg (95% CI 1.7¿5.4) compared with sitting for 8 h uninterrupted. For participants not taking antihypertensive medications, sitting with 3 min of walking every 30 min decreased systolic blood pressure by 5.0 mmHg (95% CI -7.9 to 2.0) and sitting with 3 min bouts light-intensity exercise while standing every 30 min decreased systolic blood pressure by 4.2 mmHg (95% CI -7.2 to -1.3) compared with sitting for 8 h uninterrupted. There was no effect of condition on diastolic blood pressure (p = 0.45) or plasma fibrinogen levels (p = 0.91). Conclusion: Frequent, short bouts of light-intensity physical activity decreases systolic blood pressure in stroke survivors. However, before translation into clinical practice, the optimal duration and timing of physical activity bouts needs to be determined. Clinical trial registration: Australian and New Zealand Clinical Trials Registry http://www.anzctr.org.au ANZTR12615001189516.
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Nova |
2018 |
English C, Janssen H, Crowfoot G, Callister R, Dunn A, Mackie P, et al., 'Breaking up sitting time after stroke (BUST-stroke)', International Journal of Stroke, 13 921-931 (2018) [C1]
Objectives: People with stroke sit for long periods each day, which may compromise blood glucose control and increase risk of recurrent stroke. Studies in other populations have f... [more]
Objectives: People with stroke sit for long periods each day, which may compromise blood glucose control and increase risk of recurrent stroke. Studies in other populations have found regular activity breaks have a significant immediate (within-day) positive effect on glucose metabolism. We examined the effects of breaking up uninterrupted sitting with frequent, short bouts of light-intensity physical activity in people with stroke on post-prandial plasma glucose and insulin. Methods: Randomized within-participant crossover trial. We included people between 3 months and 10 years post-stroke, ambulant with minimal assistance and not taking diabetic medication other than metformin. The three experimental conditions (completed in random order) were: sitting for 8 h uninterrupted, sitting with 3 min bouts of light-intensity exercise while standing every 30 min, or sitting with 3 min of walking every 30 min. Meals were standardized and bloods were collected half- to one-hourly via an intravenous cannula. Results: A total of 19 participants (9 female, mean [SD] age 68.2 [10.2]) completed the trial. The majority (n = 12, 63%) had mild stroke symptoms (National Institutes of Stroke Scale score 0¿13). There was no significant effect of experimental condition on glucose (mean [SD] positive incremental area [+iAUC] mmol·L·h-1 under the curve during sitting 42.3 [29.5], standing 47.4 [23.1], walking 44.6 [26.5], p = 0.563) or insulin (mean + iAUC pmol·L·h-1 sitting 14,161 [7,560], standing 14,043 [8,312], walking 14,008 [8,269], p = 0.987). Conclusion: Frequent, short bouts of light-intensity physical activity did not have a significant effect on post-prandial plasma glucose and insulin in this sample of people with stroke. Further studies are needed to identify strategies that improve inactivity-related glucose metabolism after stroke.
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Nova |
2018 |
Hutchesson M, Callister R, Morgan P, Pranata I, Clarke E, Skinner G, et al., 'A Targeted and Tailored eHealth Weight Loss Program for Young Women: The Be Positive Be Healthe Randomized Controlled Trial', Healthcare, 6 1-19 (2018) [C1]
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Nova |
2018 |
Hutchesson M, Callister R, Morgan P, Pranata I, Clarke E, Skinner G, et al., 'A Targeted and Tailored eHealth Weight Loss Program for Young Women: The Be Positive Be Healthe Randomized Controlled Trial', Healthcare, 6 1-19 (2018) [C1]
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Nova |
2018 |
Vincze L, Rollo ME, Hutchesson MJ, Callister R, Collins CE, 'VITAL change for mums: a feasibility study investigating tailored nutrition and exercise care delivered by video-consultations for women 3-12 months postpartum.', Journal of human nutrition and dietetics : the official journal of the British Dietetic Association, 31 337-348 (2018) [C1]
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Nova |
2018 |
Valkenborghs SR, Visser MM, Nilsson M, Callister R, van Vliet P, 'Aerobic exercise prior to task-specific training to improve poststroke motor function: A case series.', Physiotherapy research international : the journal for researchers and clinicians in physical therapy, 23 e1707 (2018) [C1]
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Nova |
2018 |
Hutchesson M, Shrewsbury V, Park F, Callister R, Collins C, 'Are women with a recent diagnosis of pre-eclampsia aware of their cardiovascular disease risk? A cross-sectional survey', AUSTRALIAN & NEW ZEALAND JOURNAL OF OBSTETRICS & GYNAECOLOGY, 58 E27-E28 (2018)
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2018 |
Baker AL, Richmond R, Kay-Lambkin FJ, Filia SL, Castle D, Williams JM, et al., 'Randomised controlled trial of a healthy lifestyle intervention among smokers with psychotic disorders: Outcomes to 36 months', Australian and New Zealand Journal of Psychiatry, 52 239-252 (2018) [C1]
Objective: People living with psychotic disorders (schizophrenia spectrum and bipolar disorders) have high rates of cardiovascular disease risk behaviours, including smoking, phys... [more]
Objective: People living with psychotic disorders (schizophrenia spectrum and bipolar disorders) have high rates of cardiovascular disease risk behaviours, including smoking, physical inactivity and poor diet. We report cardiovascular disease risk, smoking cessation and other risk behaviour outcomes over 36 months following recruitment into a two-arm randomised controlled trial among smokers with psychotic disorders. Methods: Participants (N = 235) drawn from three sites were randomised to receive nicotine replacement therapy plus (1) a Healthy Lifestyles intervention delivered over approximately 9 months or (2) a largely telephone-delivered intervention (designed to control for nicotine replacement therapy provision, session frequency and other monitoring). The primary outcome variables were 10-year cardiovascular disease risk and smoking status, while the secondary outcomes included weekly physical activity, unhealthy eating, waist circumference, psychiatric symptomatology, depression and global functioning. Results: Significant reductions in cardiovascular disease risk and smoking were detected across the 36-month follow-up period in both intervention conditions, with no significant differences between conditions. One-quarter (25.5%) of participants reported reducing cigarettes per day by 50% or more at multiple post-treatment assessments; however, few (8.9%) managed to sustain this across the majority of time points. Changes in other health behaviours or lifestyle factors were modest; however, significant improvements in depression and global functioning were detected over time in both conditions. Participants experiencing worse ¿social discomfort¿ at baseline (e.g. anxiety, mania, poor self-esteem and social disability) had on average significantly worse global functioning, lower scores on the 12-Item Short Form Health Survey physical scale and significantly greater waist circumference. Conclusion: Although the telephone-delivered intervention was designed as a comparison condition, it achieved excellent retention and comparable outcomes. Telephone-delivered smoking cessation support may potentially help to reduce smoking rates among people with psychotic disorders. Discomfort in social situations may also be a useful target for future health interventions, addressing confidence and social skills, and promoting social networks that reduce inactivity.
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Nova |
2017 |
Bartholomeusz MD, Bolton PS, Callister R, Skinner V, Hodgson D, 'Design, rationale and feasibility of a multidimensional experimental protocol to study early life stress', Contemporary Clinical Trials Communications, 7 33-43 (2017) [C1]
There is a rapidly accumulating body of evidence regarding the influential role of early life stress (ELS) upon medical and psychiatric conditions. While self-report instruments, ... [more]
There is a rapidly accumulating body of evidence regarding the influential role of early life stress (ELS) upon medical and psychiatric conditions. While self-report instruments, with their intrinsic limitations of recall, remain the primary means of detecting ELS in humans, biological measures are generally limited to a single biological system. This paper describes the design, rationale and feasibility of a study to simultaneously measure neuroendocrine, immune and autonomic nervous system (ANS) responses to psychological and physiological stressors in relation to ELS. Five healthy university students were recruited by advertisement. Exclusion criteria included chronic medical conditions, psychotic disorders, needle phobia, inability to tolerate pain, and those using anti-inflammatory medications. They were clinically interviewed and physiological recordings made over a two-hour period pre, during and post two acute stressors: the cold pressor test and recalling a distressing memory. The Childhood Trauma Questionnaire and the Parental Bonding Index were utilised to measure ELS. Other psychological measures of mood and personality were also administered. Measurements of heart rate, blood pressure, respiratory rate, skin conductance, skin blood flow and temporal plasma samples were successfully obtained before, during and after acute stress. Participants reported the extensive psychological and multisystem physiological data collection and stress provocations were tolerable. Most (4/5) participants indicated a willingness to return to repeat the protocol, indicating acceptability. Our protocol is viable and safe in young physically healthy adults and allows us to assess simultaneously neuroendocrine, immune and autonomic nervous system responses to stressors in persons assessed for ELS.
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Nova |
2017 |
Stevens CJ, Kittel A, Sculley DV, Callister R, Taylor L, Dascombe BJ, 'Running performance in the heat is improved by similar magnitude with pre-exercise cold-water immersion and mid-exercise facial water spray', JOURNAL OF SPORTS SCIENCES, 35 798-805 (2017) [C1]
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Nova |
2017 |
Gleeson M, Pyne DB, Elkington LJ, Hall ST, Attia JR, Oldmeadow C, et al., 'Developing a multi-component immune model for evalusating the risk of respiratory illness in athletes', EXERCISE IMMUNOLOGY REVIEW, 23 52-64 (2017) [C1]
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Nova |
2017 |
Dunn A, Marsden DL, Barker D, Van Vliet P, Spratt NJ, Callister R, 'Cardiorespiratory fitness and walking endurance improvements after 12 months of an individualised home and community-based exercise programme for people after stroke.', Brain injury, 31 1617-1624 (2017) [C1]
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2017 |
Battistuzzo CR, Rank MM, Flynn JR, Morgan DL, Callister R, Callister RJ, Galea MP, 'Effects Of treadmill training on hindlimb muscles of spinal cord injured mice', Muscle and Nerve, 55 232-242 (2017) [C1]
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2017 |
Stevens CJ, Bennett KJM, Sculley DV, Callister R, Taylor L, Dascombe BJ, 'A Comparison of Mixed-Method Cooling Interventions on Preloaded Running Performance in the Heat', Journal of Strength and Conditioning Research, 31 620-629 (2017) [C1]
Stevens, CJ, Bennett, KJM, Sculley, DV, Callister, R, Taylor, L, and Dascombe, BJ. A comparison of mixed-method cooling interventions on preloaded running performance in the heat.... [more]
Stevens, CJ, Bennett, KJM, Sculley, DV, Callister, R, Taylor, L, and Dascombe, BJ. A comparison of mixed-method cooling interventions on preloaded running performance in the heat. J Strength Cond Res 31(3): 620-629, 2017 - The purpose of this investigation was to assess the effect of combining practical methods to cool the body on endurance running performance and physiology in the heat. Eleven trained male runners completed 4 randomized, preloaded running time trials (20 minutes at 70% Vo 2 max and a 3 km time trial) on a nonmotorized treadmill in the heat (33° C). Trials consisted of precooling by combined cold-water immersion and ice slurry ingestion (PRE), midcooling by combined facial water spray and menthol mouth rinse (MID), a combination of all methods (ALL), and control (CON). Performance time was significantly faster in MID (13.7 ± 1.2 minutes; p < 0.01) and ALL (13.7 ± 1.4 minutes; p = 0.04) but not PRE (13.9 ± 1.4 minutes; p = 0.24) when compared with CON (14.2 ± 1.2 minutes). Precooling significantly reduced rectal temperature (initially by 0.5 ± 0.2° C), mean skin temperature, heart rate and sweat rate, and increased iEMG activity, whereas midcooling significantly increased expired air volume and respiratory exchange ratio compared with control. Significant decreases in forehead temperature, thermal sensation, and postexercise blood prolactin concentration were observed in all conditions compared with control. Performance was improved with midcooling, whereas precooling had little or no influence. Midcooling may have improved performance through an attenuated inhibitory psychophysiological and endocrine response to the heat.
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2017 |
Aguiar EJ, Morgan PJ, Collins CE, Plotnikoff RC, Young MD, Callister R, 'Process Evaluation of the Type 2 Diabetes Mellitus PULSE Program Randomized Controlled Trial: Recruitment, Engagement, and Overall Satisfaction', AMERICAN JOURNAL OF MENS HEALTH, 11 1055-1068 (2017) [C1]
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2017 |
Quatela A, Callister R, Patterson AJ, McEvoy M, MacDonald-Wicks LK, 'Breakfast Cereal Consumption and Obesity Risk amongst the Mid-Age Cohort of the Australian Longitudinal Study on Women's Health.', Healthcare (Basel), 5 (2017) [C1]
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Nova |
2017 |
Reid SA, Callister R, Katekar MG, Treleaven JM, 'Utility of a brief assessment tool developed from the Dizziness Handicap Inventory to screen for Cervicogenic dizziness: A case control study', Musculoskeletal Science and Practice, 30 42-48 (2017) [C1]
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Nova |
2017 |
Ashton L, Williams R, Wood L, Schumacher T, Burrows T, Rollo M, et al., 'Comparison of Australian recommended food score (ARFS) and plasma carotenoid concentrations: A validation study in adults', Nutrients, 9 (2017) [C1]
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Nova |
2017 |
Janssen H, Dunstan DW, Bernhardt J, Walker FR, Patterson A, Callister R, et al., 'Breaking up sitting time after stroke (BUST-Stroke)', INTERNATIONAL JOURNAL OF STROKE, 12 425-429 (2017)
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2017 |
Schumacher TL, Burrows TL, Neubeck L, Redfern J, Callister R, Collins CE, 'How dietary evidence for the prevention and treatment of CVD is translated into practice in those with or at high risk of CVD: A systematic review', Public Health Nutrition, 20 30-45 (2017) [C1]
Objective: CVD is a leading cause of mortality and morbidity, and nutrition is an important lifestyle factor. The aim of the present systematic review was to synthesise the litera... [more]
Objective: CVD is a leading cause of mortality and morbidity, and nutrition is an important lifestyle factor. The aim of the present systematic review was to synthesise the literature relating to knowledge translation (KT) of dietary evidence for the prevention and treatment of CVD into practice in populations with or at high risk of CVD. Design: A systematic search of six electronic databases (CINAHL, Cochrane, EMBASE, MEDLINE, PsycINFO and Scopus) was performed. Studies were included if a nutrition or dietary KT was demonstrated to occur with a relevant separate measureable outcome. Quality was assessed using a tool adapted from two quality checklists. Subjects: Population with or at high risk of CVD or clinicians likely to treat this population. Results: A total of 4420 titles and abstracts were screened for inclusion, with 354 full texts retrieved to assess inclusion. Forty-three articles were included in the review, relating to thirty-five separate studies. No studies specifically stated their aim to be KT. Thirty-one studies were in patient or high-risk populations and four targeted health professionals. Few studies stated a theory on which the intervention was based (n 10) and provision of instruction was the most common behaviour change strategy used (n 26). Conclusions: KT in nutrition and dietary studies has been inferred, not stated, with few details provided regarding how dietary knowledge is translated to the end user. This presents challenges for implementation by clinicians and policy and decision makers. Consequently a need exists to improve the quality of publications in this area.
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2017 |
Valkenborghs SR, Visser MM, Dunn A, Erickson KI, Nilsson M, Callister R, van Vliet P, 'AExaCTT - Aerobic Exercise and Consecutive Task-specific Training for the upper limb after stroke: Protocol for a randomised controlled pilot study', CONTEMPORARY CLINICAL TRIALS COMMUNICATIONS, 7 179-185 (2017)
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2017 |
Dunn A, Marsden DL, Van Vliet P, Spratt NJ, Callister R, 'Independently ambulant, community-dwelling stroke survivors have reduced cardiorespiratory fitness, mobility and knee strength compared to an age- and gendermatched cohort', Topics in Stroke Rehabilitation, 24 163-169 (2017) [C1]
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2017 |
Marsden DL, Dunn A, Callister R, McElduff P, Levi CR, Spratt NJ, 'Interval circuit training for cardiorespiratory fitness is feasible for people after stroke', International Journal of Therapy and Rehabilitation, 24 190-202 (2017) [C1]
Aims: To determine if community-dwelling stroke survivors can achieve exercise intensities sufficient to improve cardiorespiratory fitness during a single session of circuit train... [more]
Aims: To determine if community-dwelling stroke survivors can achieve exercise intensities sufficient to improve cardiorespiratory fitness during a single session of circuit training using an interval training approach. Methods: Thirteen independently ambulant participants within 1 year of stroke were included in this observational study (females=54%; median age=65.6 years; interquartile range=23.9). Exercise intensities were assessed throughout an individually tailored circuit of up to seven 5-minute workstations from a selection of nine functional (e.g. walking, stairs, balance) and three ergometer (upright cycle, rower, treadmill) workstations. The interval durations ranged from 5¿60 seconds. Oxygen consumption (VO2) was recorded continuously using a portable metabolic system. The average VO2 during each 30-second epoch was determined. VO2=10.5 mL/kg/min was categorised as =moderate intensity. Findings: Participants exercised at VO2=10.5 mL/kg/min for the majority of the time on the workstations [functional: 369/472 epochs (78%), ergometer: 170/204 epochs (83%)]. Most (69%) participants exercised for =30 minutes. No serious adverse events occurred. Conclusions: Applying interval training principles to a circuit of functional and ergometer workstations enabled ambulant participants to exercise at an intensity and for a duration that can improve cardiorespiratory fitness. The training approach appears feasible, safe and a promising way to incorporate both cardiorespiratory fitness and functional training into post-stroke management.
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Nova |
2017 |
Nasstasia Y, Baker AL, Halpin SA, Lewin TJ, Hides L, Kelly BJ, Callister R, 'Pilot Study of an Exercise Intervention for Depressive Symptoms and Associated Cognitive-Behavioral Factors in Young Adults with Major Depression', Journal of Nervous and Mental Disease, 205 647-655 (2017) [C1]
This study assesses the feasibility of integrating motivational interviewing (MI) with an exercise intervention. It also explores patterns of depressive symptom changes (cognitive... [more]
This study assesses the feasibility of integrating motivational interviewing (MI) with an exercise intervention. It also explores patterns of depressive symptom changes (cognitive, affective, and somatic subscales) and their relationship to cognitive, behavioral, and immunological factors (interleukin 6, IL-6, a marker for inflammation) across the exercise intervention. Twelve young adults (20.8 ± 1.7 years) meeting DSM-IV criteria for major depressive disorder received a brief MI intervention followed by a 12-week exercise intervention. Assessments were conducted preintervention, postintervention, throughout the intervention, and at follow-up. Preliminary results show differential effects of exercise, with the largest standardized mean improvements for the affective subscale (-1.71), followed by cognitive (-1.56) and somatic (-1.39) subscales. A significant relationship was observed between increased behavioral activation and lower levels of IL-6. Despite study limitations, the magnitude of changes suggests that natural remission of depressive symptoms is an unlikely explanation for the findings. A randomized controlled trial has commenced to evaluate effectiveness of the intervention.
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2017 |
Young MD, Callister R, Collins CE, Plotnikoff RC, Aguiar EJ, Morgan PJ, 'Efficacy of a Gender-Tailored Intervention to Prevent Weight Regain in Men over 3 Years: A Weight Loss Maintenance RCT', OBESITY, 25 56-65 (2017) [C1]
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Nova |
2017 |
Dunn A, Pearce K, Callister R, Collison A, Morten M, Mandaliya P, et al., 'Exercise capacity is not decreased in children who have undergone lung resection early in life for congenital thoracic malformations compared to healthy age-matched children', Pediatric Pulmonology, 52 1340-1348 (2017) [C1]
Purpose: The purpose of this study was to compare (i) the exercise capacity and (ii) lung function prior to and immediately post cardiopulmonary exercise tests (CPET) of children ... [more]
Purpose: The purpose of this study was to compare (i) the exercise capacity and (ii) lung function prior to and immediately post cardiopulmonary exercise tests (CPET) of children who underwent early life lung resection for Congenital Pulmonary Airway Malformations (CPAM) to healthy control children. Method: Eight children with CPAM (four males, age 9.6 ± 1.8 years) and eight control children without respiratory disease (three males, age 9.4 ± 1.4 years) performed a CPET on a cycle ergometer, during which maximal oxygen consumption (V¿O2max) and heart rate were measured. Prior to and immediately post CPET, lung function measures including Nitrogen Multiple Breath Washout (MBW) and spirometry were performed. Results: There were no significant between group differences in pre CPET lung function (P > 0.05) or maximal exercise capacity (V¿O2max CPAM: 39.4 mL.kg-1.min-1, Control: 40.5 mL.kg-1.min-1). Post CPET, FEV1 was significantly lower in the CPAM group, with two participants diagnosed subsequently with exercise induced bronchospasm based on post-CPET spirometry and follow-up clinical investigations. Conclusion: Early life lung resection for CPAM does not appear to have negative implications for exercise capacity later in childhood. Clinicians should be aware that dyspnoea following exercise may be due to asthma rather than residual effects of CPAM in these children.
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2017 |
Collins CE, Morgan PJ, Hutchesson MJ, Oldmeadow C, Barker D, Callister R, 'Efficacy of Web-Based Weight Loss Maintenance Programs: A Randomized Controlled Trial Comparing Standard Features Versus the Addition of Enhanced Personalized Feedback over 12 Months.', Behavioral sciences (Basel, Switzerland), 7 (2017) [C1]
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Nova |
2017 |
Rollo ME, Aguiar EJ, Pursey KM, Morgan PJ, Plotnikoff RC, Young MD, et al., 'Impact on dietary intake of a self-directed, gender-tailored diabetes prevention program in men', World Journal of Diabetes, 8 414-421 (2017) [C1]
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2016 |
Williams RL, Wood LG, Collins CE, Morgan PJ, Callister R, 'Energy homeostasis and appetite regulating hormones as predictors of weight loss in men and women', Appetite, 101 1-7 (2016) [C1]
Sex differences in weight loss are often seen despite using the same weight loss program. There has been relatively little investigation of physiological influences on weight loss... [more]
Sex differences in weight loss are often seen despite using the same weight loss program. There has been relatively little investigation of physiological influences on weight loss success in males and females, such as energy homeostasis and appetite regulating hormones. The aims were to 1) characterise baseline plasma leptin, ghrelin and adiponectin concentrations in overweight and obese males and females, and 2) determine whether baseline concentrations of these hormones predict weight loss in males and females.Subjects were overweight or obese (BMI 25-40 kg/m2) adults aged 18-60 years. Weight was measured at baseline, and after three and six months participation in a weight loss program. Baseline concentrations of leptin, adiponectin and ghrelin were determined by enzyme-linked immunosorbent assay (ELISA). An independent t-test or non-parametric equivalent was used to determine any differences between sex. Linear regression determined whether baseline hormone concentrations were predictors of six-month weight change.Females had significantly higher baseline concentrations of leptin, adiponectin and unacylated ghrelin as well as ratios of leptin:adiponectin and leptin:ghrelin. The ratio of acylated:unacylated ghrelin was significantly higher in males. In males and females, a higher baseline concentration of unacylated ghrelin predicted greater weight loss at six months. Additionally in females, higher baseline total ghrelin predicted greater weight loss and a higher ratio of leptin:ghrelin predicted weight gain at six months.A higher pre-weight-loss plasma concentration of unacylated ghrelin is a modest predictor of weight loss success in males and females, while a higher leptin:ghrelin ratio is a predictor of weight loss failure in females. Further investigation is required into what combinations and concentrations of these hormones are optimal for weight loss success.
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Nova |
2016 |
Burrows T, Harries SK, Williams RL, Lum C, Callister R, 'The Diet Quality of Competitive Adolescent Male Rugby Union Players with Energy Balance Estimated Using Different Physical Activity Coefficients', NUTRIENTS, 8 (2016) [C1]
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Nova |
2016 |
Rollo ME, Aguiar EJ, Williams RL, Wynne K, Kriss M, Callister R, Collins CE, 'Ehealth technologies to support nutrition and physical activity behaviors in diabetes self-management', Diabetes, Metabolic Syndrome and Obesity, 9 381-390 (2016) [C1]
Diabetes is a chronic, complex condition requiring sound knowledge and self-management skills to optimize glycemic control and health outcomes. Dietary intake and physical activit... [more]
Diabetes is a chronic, complex condition requiring sound knowledge and self-management skills to optimize glycemic control and health outcomes. Dietary intake and physical activity are key diabetes self-management (DSM) behaviors that require tailored education and support. Electronic health (eHealth) technologies have a demonstrated potential for assisting individuals with DSM behaviors. This review provides examples of technologies used to support nutrition and physical activity behaviors in the context of DSM. Technologies covered include those widely used for DSM, such as web-based programs and mobile phone and smartphone applications. In addition, examples of novel tools such as virtual and augmented reality, video games, computer vision for dietary carbohydrate monitoring, and wearable devices are provided. The challenges to, and facilitators for, the use of eHealth technologies in DSM are discussed. Strategies to support the implementation of eHealth technologies within practice and suggestions for future research to enhance nutrition and physical activity behaviors as a part of broader DSM are provided.
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Nova |
2016 |
Henry T, Evans K, Snodgrass SJ, Miller A, Callister R, 'Risk Factors for Noncontact Ankle Injuries in Amateur Male Soccer Players: A Prospective Cohort Study', Clinical Journal of Sport Medicine, 26 251-258 (2016) [C1]
Objective: To determine whether nonmodifiable and modifiable risk factors [ankle dorsiflexion range of motion (ROM), lower limb power output, and balance], as identified in presea... [more]
Objective: To determine whether nonmodifiable and modifiable risk factors [ankle dorsiflexion range of motion (ROM), lower limb power output, and balance], as identified in preseason screening, predict the risk of sustaining a noncontact ankle injury in amateur male soccer players during the training and competitive season. Design: Prospective cohort study. Setting: Amateur soccer competition (club and area representative teams). Participants: Amateur soccer players (n = 210) aged =15 years. Assessment of Risk Factors (Independent Variables): Height, weight, ankle dorsiflexion ROM, power (vertical jump) and balance (time of double-leg balanced stance on an electronic wobble board, maximum 20 seconds) measured in preseason screening. Main Outcome Measures (Dependent Variable): Incidence of noncontact ankle injury and exposure to both training and games, monitored during the competitive season following baseline measurement. Noncontact ankle injury was defined as any ankle injury not caused by a collision (with another player or object) resulting in a participant missing at least 1 game or training session. Results: Fourteen of the 210 participants (6.7%) sustained a noncontact ankle injury yielding an injury rate of 0.484 injuries per 1000 player hours. Lower limb power output scores <30 W/kg [odds ratio (OR), 9.20, 95% confidence interval (CI), 1.13-75.09, P = 0.038] and poorer balance scores (OR, 0.43, 95% CI, 0.21-0.89, P = 0.024) were associated with higher odds of injury. Conclusions: Poorer lower limb power output and balance are risk factors for noncontact ankle injury among amateur soccer players. These deficits can potentially be identified by screening, providing opportunities to investigate prevention strategies.
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2016 |
Hutchesson MJ, Morgan PJ, Callister R, Pranata I, Skinner G, Collins CE, 'Be positive be healthe: Development and implementation of a targeted e-health weight loss program for young women', Telemedicine and e-Health, 22 519-528 (2016) [C1]
Background: Greater numbers of women are entering young adulthood overweight, but traditional weight loss programs do not appeal to them. This article describes the development an... [more]
Background: Greater numbers of women are entering young adulthood overweight, but traditional weight loss programs do not appeal to them. This article describes the development and evaluation of an e-health weight loss intervention for young women (18-30 years of age). Materials and Methods: Young women's preferences for a targeted weight loss program were investigated via a cross-sectional online survey. A 3-month targeted weight loss program for young women was developed based on the formative research. A single-arm pre-post study was conducted to evaluate the acceptability of the intervention (process evaluation survey and objective usage data) and to estimate the treatments' effects on weight-related outcomes from baseline to 3 months. Results: Online survey respondents (n = 274) indicated preferences for various technologies (Web site, online quizzes with e-mail feedback and goal setting, an online discussion forum, smartphone application, e-mail newsletters, and text messages). Eighteen (mean ± standard deviation [SD] age, 22.8 ± 3.2 years; body mass index, 27.3 ± 1.6 kg/m2) women entered the pre-post study. Mean satisfaction was 3.4 ± 1.0 (maximum of 5), and 66.7% of participants completed the study. Significant reductions in mean ± SD weight (-1.5 ± 2.4 kg; p = 0.02) and waist circumference (-0.7 ± 1.4 cm; p = 0.04) were observed. Conclusions: Due to lower than anticipated participant satisfaction, modifications to the program content and modes of delivery are required to ensure a higher proportion of young women complete and actively engage with the program. The positive effects of treatment on weight-related outcomes supports further refinement and evaluation of targeted, e-health weight loss interventions for young women.
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Nova |
2016 |
Marsden DL, Dunn A, Callister R, McElduff P, Levi CR, Spratt NJ, 'A Home- and Community-Based Physical Activity Program Can Improve the Cardiorespiratory Fitness and Walking Capacity of Stroke Survivors', Journal of Stroke and Cerebrovascular Diseases, 25 2386-2398 (2016) [C1]
Background The cardiorespiratory fitness of stroke survivors is low. Center-based exercise programs that include an aerobic component have been shown to improve poststroke cardior... [more]
Background The cardiorespiratory fitness of stroke survivors is low. Center-based exercise programs that include an aerobic component have been shown to improve poststroke cardiorespiratory fitness. This pilot study aims to determine the feasibility, safety, and preliminary efficacy of an individually tailored home- and community-based exercise program to improve cardiorespiratory fitness and walking capacity in stroke survivors. Methods Independently ambulant, community-dwelling stroke survivors were recruited. The control (n¿=¿10) and intervention (n¿=¿10) groups both received usual care. In addition the intervention group undertook a 12-week, individually tailored, home- and community-based exercise program, including once-weekly telephone or e-mail support. Assessments were conducted at baseline and at 12 weeks. Feasibility was determined by retention and program participation, and safety by adverse events. Efficacy measures included change in cardiorespiratory fitness (peak oxygen consumption [VO2peak]) and distance walked during the Six-Minute Walk Test (6MWT). Analysis of covariance was used for data analysis. Results All participants completed the study with no adverse events. All intervention participants reported undertaking their prescribed program. VO2peak improved more in the intervention group (1.17¿±¿.29¿L/min to 1.35¿±¿.33¿L/min) than the control group (1.24¿±¿.23¿L/min to 1.24¿±¿.33¿L/min, between-group difference¿=¿.18¿L/min, 95% confidence interval [CI]:.01-.36). Distance walked improved more in the intervention group (427¿±¿123¿m to 494¿±¿67m) compared to the control group (456¿±¿101m to 470¿±¿106m, between-group difference¿=¿45¿m, 95% CI:.3-90). Conclusions Our individually tailored approach with once-weekly telephone or e-mail support was feasible and effective in selected stroke survivors. The 16% greater improvement in VO2peak during the 6MWT achieved in the intervention versus control group is comparable to improvements attained in supervised, center-based programs.
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Nova |
2016 |
Hutchesson MJ, Tan CY, Morgan P, Callister R, Collins C, 'Enhancement of self-monitoring in a web-based weight loss program by extra individualized feedback and reminders: Randomized trial', Journal of Medical Internet Research, 18 1-11 (2016) [C1]
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Nova |
2016 |
Holley TJ, Collins CE, Morgan PJ, Callister R, Hutchesson MJ, 'Weight expectations, motivations for weight change and perceived factors influencing weight management in young Australian women: A cross-sectional study', Public Health Nutrition, 19 275-286 (2016) [C1]
Objective To examine young Australian women's weight expectations, motivations for weight change and perceived factors influencing weight management, and to determine if thes... [more]
Objective To examine young Australian women's weight expectations, motivations for weight change and perceived factors influencing weight management, and to determine if these factors differ by age, BMI, marital status, education or income. Design Cross-sectional study. An online survey captured respondents' weight, height, ideal weight, main reasons for wanting to change their weight and challenges to managing their weight. Setting Online survey in Australia. Subjects Six hundred and twenty women aged 18-30 years currently living in Australia who completed the survey between 31 July and 30 September 2012. Results Approximately half of participants (53·1 %) were a healthy weight, 25·2 % overweight and 19·0 % obese. Women unhappy at their current weight (78·1 %) reported a median ideal weight -12·3 % less than their current weight. The key motivators for weight change were to improve health (24·4 %, ranked 1), feel better in oneself (22·3 %) and improve self-confidence (21·5 %). Lack of motivation, time constraints because of job commitments and cost were the most commonly reported factors influencing weight management. Age, BMI, marital status, education and income were found to influence weight expectations, motivations for weight change and/or factors perceived to influence weight management. Conclusions The findings suggest potential implications for weight management interventions and public health messaging targeting young women, to improve long-term health outcomes. Strategies that promote the health benefits of physical activity and healthy eating, feeling better about oneself and improved self-confidence, and address the main factors influencing weight management including lack of motivation, time constraints and cost, may be used to engage this target group.
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2016 |
Schumacher TL, Burrows TL, Rollo ME, Wood LG, Callister R, Collins CE, 'Comparison of fatty acid intakes assessed by a cardiovascular-specific food frequency questionnaire with red blood cell membrane fatty acids in hyperlipidaemic Australian adults: A validation study', European Journal of Clinical Nutrition, 70 1433-1438 (2016) [C1]
Background/Objectives:Limited dietary intake tools have been validated specifically for hyperlipidaemic adults. The Australian Eating Survey (AES) Food Frequency Questionnaire (FF... [more]
Background/Objectives:Limited dietary intake tools have been validated specifically for hyperlipidaemic adults. The Australian Eating Survey (AES) Food Frequency Questionnaire (FFQ) was adapted to include foods with cardio-protective properties (CVD-AES). The aims were to estimate dietary fatty acid (FA) intakes derived from the CVD-AES and AES and compare them with red blood cell (RBC) membrane FA content.Subjects/Methods:Dietary intake was measured using the semi-quantitative 120-item AES and 177-item CVD-AES. Nutrient intakes were calculated using AUSNUT 2011-2013. Fasting RBC membrane FAs were assessed using gas chromatography. Extent of agreement between intakes estimated by AES or CVD-AES and RBC membrane composition (% of total FAs) for linoleic acid (LA), alpha-linolenic acid (ALA), eicosapentanoic acid (EPA), docosapentaenoic acid (DPA) and docosahexaenoic acid (DHA) were assessed using Spearman's correlation coefficients, adjusted linear regressions and Kappa statistics.Results:Data from 39 participants (72% female, 59.3±11.1 years) indicate stronger positive correlations between RBC membrane FAs and CVD-AES dietary estimates compared with the AES. Significant (P<0.05) moderate-strong correlations were found between CVD-AES FAs and FA proportions in RBC membranes for EPA (r=0.62), DHA (r=0.53) and DPA (r=0.42), with a moderate correlation for LA (r=0.39) and no correlation with ALA. Significant moderate correlations were found with the AES for DHA (r=0.39), but not for LA, ALA, EPA or DPA.Conclusions:The CVD-AES provides a more accurate estimate of long chain FA intakes in hyperlipidaemic adults, compared with AES estimates. This indicates that a CVD-specific FFQ should be used when evaluating FA intakes in this population.
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2016 |
Schumacher TL, Burrows TL, Rollo ME, Spratt NJ, Callister R, Collins CE, 'Effectiveness of a Brief Dietetic Intervention for Hyperlipidaemic Adults Using Individually-Tailored Dietary Feedback', HEALTHCARE, 4 (2016) [C1]
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2016 |
Young MD, Plotnikoff RC, Collins CE, Callister R, Morgan PJ, 'A test of social cognitive theory to explain men s physical activity during a gender-tailored weight loss program', American Journal of Men's Health, 10 N176-N187 (2016) [C1]
Physical inactivity is a leading contributor to the burden of disease in men. Social¿cognitive theories may improve physical activity (PA) interventions by identifying which varia... [more]
Physical inactivity is a leading contributor to the burden of disease in men. Social¿cognitive theories may improve physical activity (PA) interventions by identifying which variables to target to maximize intervention impact. This study tested the utility of Bandura¿s social cognitive theory (SCT) to explain men¿s PA during a 3-month weight loss program. Participants were 204 overweight/obese men (M [SD] age = 46.6 [11.3] years; body mass index = 33.1 [3.5] kg/m2). A longitudinal, latent variable structural equation model tested the associations between SCT constructs (i.e., self-efficacy, outcome expectations, intention, and social support) and self-reported moderate-to-vigorous PA (MVPA) and examined the total PA variance explained by SCT. After controlling for Time 1 cognitions and behavior, the model fit the data well (¿2= 73.9, degrees of freedom = 39, p < .001; normed ¿2= 1.9; comparative fit index = 0.96; standardized root mean residual = 0.059) and explained 65% of the variance in MVPA at Time 2. At Time 2, self-efficacy demonstrated the largest direct and total effects on MVPA (ßdirect= .45, p < .001; ßtotal= .67, p = .002). A small-to-medium effect was observed from intention to MVPA, but not from outcome expectations or social support. This study provides some evidence supporting the tenets of SCT when examining PA behavior in overweight and obese men. Future PA and weight loss interventions for men may benefit by targeting self-efficacy and intention, but the utility of targeting social support and outcome expectations requires further examination.
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2016 |
Andrews M, Baker AL, Halpin SA, Lewin TJ, Richmond R, Kay-Lambkin FJ, et al., 'Early therapeutic alliance, treatment retention, and 12-month outcomes in a healthy lifestyles intervention for people with psychotic disorders', Journal of Nervous and Mental Disease, 204 894-902 (2016) [C1]
Engaging and retaining individuals with psychotic disorders in psychosocial treatments is difficult. Early therapeutic alliance, treatment retention, and 12-month outcomes were ex... [more]
Engaging and retaining individuals with psychotic disorders in psychosocial treatments is difficult. Early therapeutic alliance, treatment retention, and 12-month outcomes were examined in a subsample of smokers with a psychotic disorder (N = 178) participating in a healthy lifestyles study comparing a telephone versus face-to-face delivered intervention. Therapeutic alliance was assessed using the Agnew Relationship Measure; primary outcomes were treatment retention and changes in symptoms and health behaviors. Contrary to expectations, early alliance did not predict treatment retention. However, elements of both client- and therapist-rated alliance predicted some clinical outcomes (e.g., higher confidence in the therapeutic alliance at session 1 predicted improvements in 12-month depression). Some modest interactions between early alliance and intervention condition were also identified (e.g., clients initially with lower self-perceived initiative, or higher therapist-perceived bonding benefited preferentially from the telephone-delivered intervention), highlighting the need to further examine the interplay between therapeutic alliance and treatment modality.
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Nova |
2016 |
Quatela A, Callister, patterson, Macdonald-Wicks, 'The Energy Content and Composition of Meals Consumed after an Overnight Fast and Their Effects on Diet Induced Thermogenesis: A Systematic Review, Meta-Analyses and Meta-Regressions', Nutrients, 8 (2016) [C1]
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Nova |
2016 |
Harries SK, Lubans DR, Callister R, 'Comparison of resistance training progression models on maximal strength in sub-elite adolescent rugby union players', Journal of Science and Medicine in Sport, 19 163-169 (2016) [C1]
Objectives: To determine changes in maximal strength between two different resistance training progression models, linear (LP) and daily undulating (DUP), over a 12-week resistanc... [more]
Objectives: To determine changes in maximal strength between two different resistance training progression models, linear (LP) and daily undulating (DUP), over a 12-week resistance training programme in sub-elite adolescent rugby union players. Design: The study used a quasi-experimental study design. Following baseline assessments, participants from Squad 1 were randomised to either LP or DUP; participants from Squad 2 formed a non-randomised comparison group (CON). Methods: Participants were 26 sub-elite adolescent rugby union players who were assessed at baseline and after 12 weeks. Outcomes included 5 repetition maximum (RM) box squat and bench press, height, body weight, skeletal muscle mass, percentage body fat and maturation status. Results: Participants in both the LP and DUP groups significantly increased their squat and bench press strength from baseline to 12 weeks. There were no significant differences between groups for squat and bench press increases after 12 weeks (p > 0.05). No significant increases in squat or bench press strength were observed after 12 weeks in the CON group. Increases in lower body strength were large in the LP group (ES: 1.64) and very large in the DUP group (ES: 2.33). Upper body strength changes were small in both groups (LP, ES: 0.57; DUP, ES: 0.31). Conclusions: Twelve weeks of LP or DUP resistance training are both effective at increasing maximal lower and upper body strength in adolescent rugby athletes. Additionally, twice weekly frequency of resistance training in adolescent rugby athletes with greater than 6-months resistance training experience is sufficient to elicit substantial increases in maximal strength.
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Nova |
2016 |
Williams RL, Wood LG, Collins CE, Callister R, 'Comparison of fruit and vegetable intakes during weight loss in males and females', European Journal of Clinical Nutrition, 70 28-34 (2016) [C1]
Background/Objectives:Globally, fruit and vegetable intakes are well below recommendations despite ample evidence to link insufficient intake with increased risk of overweight and... [more]
Background/Objectives:Globally, fruit and vegetable intakes are well below recommendations despite ample evidence to link insufficient intake with increased risk of overweight and obesity. Intakes of fruits and vegetables in the general population differ between males and females, and although there is growing evidence of intakes in men and women during weight loss, evidence that directly compares intakes in men and women during weight loss is lacking. This study aimed to identify any differences between males and females in fruit and vegetable intakes and plasma carotenoid concentrations during weight loss, and determine whether there is a relationship between any changes in fruit and vegetable intakes and weight change in both males and females.Subjects/Methods:Men and women (n=100; body mass index 25-40 kg/m2) aged 18-60 years were selected for the study. Dietary intake of fruits and vegetables was assessed using the Australian Eating Survey and fasting blood was collected to assess plasma carotenoids, which were determined by high-performance liquid chromatography.Results:There was little change in fruit or vegetable intakes during weight loss, although men tended to increase fruit intakes. Changes in intakes were influenced by baseline intakes, with males and females with the highest intakes at baseline reducing intakes. Males had better correlations between fruit and vegetable intakes and plasma carotenoid concentrations than females, and fruit and vegetable intakes during weight loss appear to predict weight loss for males but not females.Conclusions:Fruit and vegetable intake during weight loss does not appear to differ largely between males and females.
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Nova |
2016 |
Aguiar EJ, Morgan PJ, Collins CE, Plotnikoff RC, Young MD, Callister R, 'Efficacy of the Type 2 Diabetes Prevention Using LifeStyle Education Program RCT', American Journal of Preventive Medicine, 50 353-364 (2016) [C1]
Introduction Self-administered lifestyle interventions have been suggested as an alternative to face-to-face delivery modes, although their efficacy remains uncertain. The aim of ... [more]
Introduction Self-administered lifestyle interventions have been suggested as an alternative to face-to-face delivery modes, although their efficacy remains uncertain. The aim of this study was to evaluate the efficacy of the Type 2 diabetes mellitus Prevention Using LifeStyle Education (PULSE) Program, a self-administered and gender-tailored lifestyle intervention for men at high risk for developing Type 2 diabetes mellitus. Design/setting A 6-month, assessor-blinded, parallel-group RCT was conducted at the University of Newcastle, Australia in 2012-2013. Participants Men (aged 18-65 years, BMI 25-40 kg/m2, high risk for developing Type 2 diabetes mellitus) were stratified by age (<50 and >50 years) and BMI category (25.0-29.9, 30.0-35.9, and 35.0-40 kg/m2) and individually randomized (1:1 ratio) to the intervention (n=53) or waitlist control groups (n=48). Intervention The intervention group received the PULSE Program, which contained print and video resources on weight loss (Self-Help, Exercise and Diet using Internet Technology [SHED-IT] Weight Loss Program), diet modification, and exercise for Type 2 diabetes mellitus prevention. The waitlist control group received no information until 6 months. Main outcome measures Data were collected from September 2012 to September 2013 and analyzed in 2014-2015. Linear mixed models (intention-to-treat) were used to determine group X time interactions (differences between groups in changes over time) at 6 months for the primary outcome (weight), glycated hemoglobin, and several secondary outcomes (significance level, p<0.05). Results Differences between groups in mean changes from baseline to 6 months (group × time interaction) favored the intervention over control group for weight loss (-5.50 kg, 95% CI=-7.40 kg, -3.61 kg, p<0.001, Cohen's d=1.15), glycated hemoglobin (-0.2%, 95% CI=-0.3%, -0.1%, p=0.002, d=0.64), and BMI, waist circumference, body fat percentage, aerobic fitness, and lower body muscular fitness (all p<0.05). No group × time effects were observed for fasting plasma glucose, upper body muscular fitness, physical activity, or energy intake. Conclusions The PULSE Program improved several Type 2 diabetes mellitus risk factors in men, including weight and glycated hemoglobin. These findings provide evidence for a self-administered and gender-tailored lifestyle intervention, which has potential for dissemination in community settings.
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Nova |
2016 |
Whatnall MC, Collins CE, Callister R, Hutchesson MJ, 'Associations between Unhealthy Diet and Lifestyle Behaviours and Increased Cardiovascular Disease Risk in Young Overweight and Obese Women.', Healthcare (Basel), 4 (2016) [C1]
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Nova |
2016 |
Battistuzzo CR, Rank MM, Flynn JR, Morgan DL, Callister R, Callister RJ, Galea MP, 'Gait recovery following spinal cord injury in mice: Limited effect of treadmill training', Journal of Spinal Cord Medicine, 39 335-343 (2016) [C1]
Several studies in rodents with complete spinal cord transections have demonstrated that treadmill training improves stepping movements. However, results from studies in incomplet... [more]
Several studies in rodents with complete spinal cord transections have demonstrated that treadmill training improves stepping movements. However, results from studies in incomplete spinal cord injured animals have been conflicting and questions regarding the training dosage after injury remain unresolved. Objectives: To assess the effects of treadmill-training regimen (20 minutes daily, 5 days a week) for 3, 6 or 9 weeks on the recovery of locomotion in hemisected SCI mice. Methods: A randomized and blinded controlled experimental trial used a mouse model of incomplete spinal cord injury (SCI). After a left hemisection at T10, adult male mice were randomized to trained or untrained groups. The trained group commenced treadmill training one week after surgery and continued for 3, 6 or 9 weeks. Quantitative kinematic gait analysis was used to assess the spatiotemporal characteristics of the left hindlimb prior to injury and at 1, 4, 7 and 10 weeks post-injury. Results: One week after injury there was no movement of the left hindlimb and some animals dragged their foot. Treadmill training led to significant improvements in step duration, but had limited effect on the hindlimb movement pattern. Locomotor improvements in trained animals were most evident at the hip and knee joints whereas recovery of ankle movement was limited, even after 9 weeks of treadmill training. Conclusion: These results demonstrate that treadmill training may lead to only modest improvement in recovery of hindlimb movement after incomplete spinal cord injury in mice.
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Nova |
2016 |
Kay-Lambkin FJ, Thornton L, Lappin JM, Hanstock T, Sylvia L, Jacka F, et al., 'Study protocol for a systematic review of evidence for lifestyle interventions targeting smoking, sleep, alcohol/other drug use, physical activity, and healthy diet in people with bipolar disorder', Systematic Reviews, 5 (2016)
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2016 |
Keane CA, Kelly PJ, Magee CA, Callister R, Baker A, Deane FP, 'Exploration of Sedentary Behavior in Residential Substance Abuse Populations: Results From an Intervention Study', Substance Use and Misuse, 51 1363-1378 (2016) [C1]
ABSTRACT: Background: There is a growing body of research linking sedentary behavior with increased risk of chronic disease and all-cause mortality. It is increasingly recommended... [more]
ABSTRACT: Background: There is a growing body of research linking sedentary behavior with increased risk of chronic disease and all-cause mortality. It is increasingly recommended that service providers address the multiple behavioral risk factors associated with these chronic diseases as part of routine substance abuse treatment. Objectives: The study objective was to investigate rates of physical activity and sedentary behavior in a residential substance abuse population. In addition, efficacy of a sedentary behavior intervention, ¿Sit Switch,¿ was examined for feasibility in this context. Methods: Participants (n = 54) were residents of The Salvation Army Recovery Service Centres located in Canberra and on the Gold Coast, Australia. Actigraph GT3X+ accelerometers were used to measure rates and patterns of sedentariness and physical activity. A nonrandomized controlled study of a single-session group intervention aimed at decreasing prolonged sitting (¿Sit Switch¿) was conducted. Education, motivational-interviewing, and goal setting components underpinned the ¿Sit Switch¿ intervention. Results: Individuals were highly sedentary, spending 73% of daily activity at sedentary intensity engaged in inadequate levels of moderate physical activity (6.6%/day). The single session educational program did not lead to any significant changes in sedentary behavior. Conclusion/Importance: High levels of sedentariness and low levels of physical activity engagement are evident in residents in substance abuse treatment programs. It is strongly recommended that sedentariness, a modifiable risk behavior with independent consequences for cardiovascular disease and cancer, be addressed within residential programs.
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Nova |
2016 |
Schumacher TL, Burrows TL, Thompson DI, Callister R, Spratt NJ, Collins CE, 'The Role of Family in a Dietary Risk Reduction Intervention for Cardiovascular Disease.', Healthcare (Basel), 4 (2016) [C1]
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Nova |
2016 |
Harbury CM, Verbruggen EE, Callister R, Collins CE, 'What do individuals with morbid obesity report as a usual dietary intake? A narrative review of available evidence', Clinical Nutrition ESPEN, 13 e15-e22 (2016) [C1]
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Nova |
2016 |
Stevens CJ, Thoseby B, Sculley DV, Callister R, Taylor L, Dascombe BJ, 'Running performance and thermal sensation in the heat are improved with menthol mouth rinse but not ice slurry ingestion', Scandinavian Journal of Medicine and Science in Sports, 26 1209-1216 (2016) [C1]
The purpose of this study was to compare the effects of a cooling strategy designed to predominately lower thermal state with a strategy designed to lower thermal sensation on end... [more]
The purpose of this study was to compare the effects of a cooling strategy designed to predominately lower thermal state with a strategy designed to lower thermal sensation on endurance running performance and physiology in the heat. Eleven moderately trained male runners completed familiarization and three randomized, crossover 5-km running time trials on a non-motorized treadmill in hot conditions (33 °C). The trials included ice slurry ingestion before exercise (ICE), menthol mouth rinse during exercise (MEN), and no intervention (CON). Running performance was significantly improved with MEN (25.3 ± 3.5 min; P = 0.01), but not ICE (26.3 ± 3.2 min; P = 0.45) when compared with CON (26.0 ± 3.4 min). Rectal temperature was significantly decreased with ICE (by 0.3 ± 0.2 °C; P < 0.01), which persisted for 2 km of the run and MEN significantly decreased perceived thermal sensation (between 4 and 5 km) and ventilation (between 1 and 2 km) during the time trial. End-exercise blood prolactin concentration was elevated with MEN compared with CON (by 25.1 ± 24.4 ng/mL; P = 0.02). The data demonstrate that a change in the perception of thermal sensation during exercise from menthol mouth rinse was associated with improved endurance running performance in the heat. Ice slurry ingestion reduced core temperature but did not decrease thermal sensation during exercise or improve running performance.
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Nova |
2015 |
Kelly PJ, Baker AL, Deane FP, Callister R, Collins CE, Oldmeadow C, et al., 'Study protocol: A stepped wedge cluster randomised controlled trial of a healthy lifestyle intervention for people attending residential substance abuse treatment Health behavior, health promotion and society', BMC Public Health, 15 (2015) [C3]
Background: Cardiovascular disease and cancer are leading causes of mortality for people with a history of alcohol or other substance use disorders. These chronic diseases share t... [more]
Background: Cardiovascular disease and cancer are leading causes of mortality for people with a history of alcohol or other substance use disorders. These chronic diseases share the same four primary behavioural risk factors i.e. excessive alcohol use, smoking, low intake of fruit and vegetables and physical inactivity. In addition to addressing problematic alcohol use, there is the potential for substance abuse treatment services to also address these other behaviours. Healthy Recovery is an 8-session group-based intervention that targets these multiple behavioural health risk factors and was developed specifically for people attending substance abuse treatment. This protocol describes a Cancer Institute NSW funded study that assesses the effectiveness of delivering Healthy Recovery for people who are attending residential alcohol and other substance abuse treatment. Methods/Design: The study uses a stepped wedge randomised controlled design, where randomisation occurs at the service level. Participants will be recruited from residential rehabilitation programs provided by The Australian Salvation Army. All participants who (1) currently smoke tobacco and (2) are expected to be in the residential program for the duration of the 5-week intervention will be asked to participate in the study. Those participants residing at the facilities assigned to the treatment condition will complete Healthy Recovery. The intervention is manual guided and will be delivered over a 5-week period, with participants attending 8 group sessions. All participants will continue to complete The Salvation Army residential program, a predominantly 12-step based, modified therapeutic community. Participants in the control condition will complete treatment as usual. Research staff blind to treatment allocation will complete the primary and secondary outcome assessments at baseline and then at weeks 8, 20 and 32 weeks post intervention. Discussion: This study will provide comprehensive data on the effect of delivering a healthy lifestyle intervention (i.e. Healthy Recovery) within a residential substance abuse setting. If shown to be effective, this intervention can be disseminated within other residential substance abuse programs. Trial registration: Australian and New Zealand Clinical Trials Register (ANZCTR): ACTRN12615000165583. Registered 19th February 2015.
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2015 |
Plotnikoff RC, Collins CE, Williams R, Germov J, Callister R, 'Effectiveness of interventions targeting health behaviors in University and College staff: A systematic review', American Journal of Health Promotion, 29 e169-e187 (2015) [C1]
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Nova |
2015 |
Stevens CJ, Hacene J, Wellham B, Sculley DV, Callister R, Taylor L, Dascombe BJ, 'The validity of endurance running performance on the Curve 3
Abstract: This study aimed to test the validity of a non-motorised treadmill (NMT) for the measurement of self-paced overground endurance running performance. Ten male runners per... [more]
Abstract: This study aimed to test the validity of a non-motorised treadmill (NMT) for the measurement of self-paced overground endurance running performance. Ten male runners performed randomised 5-km running time trials on a NMT and an outdoor athletics track. A range of physiological and perceptual responses was measured, and foot strike was classified subjectively. Performance time was strongly correlated (r¿=¿0.82, ICC¿=¿0.86) between running modes, despite running time being significantly longer on the NMT (1264¿±¿124¿s vs. 1536¿±¿130¿s for overground and NMT, respectively; P¿<¿0.001). End blood lactate concentration and rating of perceived exertion were significantly higher on the NMT compared to overground. Integrated electromyography was significantly lower on the NMT for three muscles (P¿<¿0.05), and mean stride rate was also significantly lower on the NMT (P¿=¿0.04). Cardiorespiratory responses of heart rate, oxygen uptake and expired air volume demonstrated strong correlations (r¿=¿0.68¿0.96, ICC¿=¿0.75¿0.97) and no statistical differences (P¿>¿0.05). Runners were consistently slower on the NMT, and as such it should not be used to measure performance over a specific distance. However, the strong correlations suggest that superior overground performance was reflected in relative terms on the NMT, and therefore, it is a valid tool for the assessment of endurance running performance in the laboratory.
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Nova |
2015 |
Rank MM, Flynn JR, Battistuzzo CR, Galea MP, Callister R, Callister RJ, 'Functional changes in deep dorsal horn interneurons following spinal cord injury are enhanced with different durations of exercise training', JOURNAL OF PHYSIOLOGY-LONDON, 593 331-345 (2015) [C1]
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Nova |
2015 |
Chuter VH, Janse De Jonge XAK, Thompson BM, Callister R, 'The efficacy of a supervised and a home-based core strengthening programme in adults with poor core stability: A three-arm randomised controlled trial', British Journal of Sports Medicine, 49 395-399 (2015) [C1]
Background Poor core stability is linked to a range of musculoskeletal pathologies and core-strengthening programmes are widely used as treatment. Treatment outcomes, however, are... [more]
Background Poor core stability is linked to a range of musculoskeletal pathologies and core-strengthening programmes are widely used as treatment. Treatment outcomes, however, are highly variable, which may be related to the method of delivery of core strengthening programmes. We investigated the effect of identical 8 week core strengthening programmes delivered as either supervised or home-based on measures of core stability. Methods Participants with poor core stability were randomised into three groups: supervised (n=26), home-based (n=26) or control (n=26). Primary outcomes were the Sahrmann test and the Star Excursion Balance Test (SEBT) for dynamic core stability and three endurance tests (side-bridge, flexor and Sorensen) for static core stability. The exercise programme was devised and supervised by an exercise physiologist. Results Analysis of covariance on the change from baseline over the 8 weeks showed that the supervised group performed significantly better on all core stability measures than both the home-based and control group. The home-based group produced significant improvements compared to the control group in all static core stability tests, but not in most of the dynamic core stability tests (Sahrmann test and two out of three directions of the SEBT). Conclusions Our results support the use of a supervised core-strengthening programme over a home-based programme to maximise improvements in core stability, especially in its dynamic aspects. Based on our findings in healthy individuals with low core stability, further research is recommended on potential therapeutic benefits of supervised core-strengthening programmes for pathologies associated with low core stability.
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Nova |
2015 |
Young MD, Lubans DR, Collins CE, Callister R, Plotnikoff RC, Morgan PJ, 'Behavioral Mediators of Weight Loss in the SHED-IT Community Randomized Controlled Trial for Overweight and Obese Men', Annals of Behavioral Medicine, 49 286-292 (2015) [C1]
Background: Little is known about which behavioral strategies are most important to target in weight loss interventions for men. Purpose: The aim of the current study was to ident... [more]
Background: Little is known about which behavioral strategies are most important to target in weight loss interventions for men. Purpose: The aim of the current study was to identify behavioral mediators of weight loss in the male-only Self-Help, Exercise, and Diet using Information Technology (SHED-IT) community weight loss study. Methods: A randomized controlled trial with 159 overweight/obese men [mean (SD) age = 47.5 (11.0) years; body mass index = 32.7 (3.5) kg/m2] assessed at baseline, 3¿months (post-test) and 6¿months (follow-up). Results: In an intention-to-treat, multiple-mediator model, the significant intervention effect on weight at 6¿months (-3.70¿kg; p < 0.001) was mediated by increases in physical activity (steps/day) and decreases in takeaway meals (kJ/day) and portion size at 3¿months. The largest mediation effect was for physical activity (-0.6¿kg; 95¿% confidence interval -1.4, -0.1). Overall, the targeted mediators accounted for 47.0¿% of the intervention¿s effect on weight. Conclusion: Step counts, takeaway food consumption, and portion sizes may be key areas to target in future weight loss programs for men (ACTRN12610000699066).
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Nova |
2015 |
Scott HA, Latham JR, Callister R, Pretto JJ, Baines K, Saltos N, et al., 'Acute exercise is associated with reduced exhaled nitric oxide in physically inactive adults with asthma', Annals of Allergy, Asthma and Immunology, 114 470-479 (2015) [C1]
Background Although exercise has multiple health benefits, relatively little attention has been paid to its potential therapeutic effects in those with asthma. Objective To examin... [more]
Background Although exercise has multiple health benefits, relatively little attention has been paid to its potential therapeutic effects in those with asthma. Objective To examine the effects of acute exercise on inflammation in physically inactive and active adults with asthma. Methods Fourteen adults with asthma (n = 6 physically inactive, n = 8 physically active) completed (1) 30 minutes of moderate-intensity exercise on a treadmill and (2) 30 minutes of rest in random order, with 4 weeks between sessions. Exhaled nitric oxide (eNO) was measured before and after the intervention (0, 0.5, 1, 2, 4, and 24 hours). Blood inflammatory mediators were measured before and after the intervention (0, 2, and 24 hours). Results Physically inactive participants had a significant decrease in eNO 4 hours after exercise (-4.8 ppb, -6.4 to -0.5 ppb, P =.028), which was not observed in physically active participants (P =.362). Interluekin-1 receptor antagonist increased in the physically inactive group 2 hours after exercise, with this increase strongly correlated with the decrease in eNO at 4 hours (R = -0.685, P =.007) and 24 hours (R = -0.659, P =.014) after exercise. Interleukin-6 was increased significantly 2 hours after exercise in physically inactive participants. Blood neutrophils and nuclear factor erythroid 2-like 2 gene expression were increased 2 hours after exercise in the overall cohort. Conclusion This study demonstrates that acute moderate-intensity exercise is associated with decreased eNO in physically inactive adults with asthma and suggests that interluekin-1 receptor antagonist could have a role in mediating this effect. The attenuated response in physically active participants might be due to the sustained anti-inflammatory effects of exercise training. Future studies should investigate the impact of exercise intensity and exercise training on airway inflammation in those with asthma.
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Nova |
2015 |
Reid SA, Callister R, Snodgrass SJ, Katekar MG, Rivett DA, 'Manual therapy for cervicogenic dizziness: Long-term outcomes of a randomised trial', Manual Therapy, 20 148-156 (2015) [C1]
Manual therapy is effective for reducing cervicogenic dizziness, a disabling and persistent problem, in the short term. This study investigated the effects of sustained natural ap... [more]
Manual therapy is effective for reducing cervicogenic dizziness, a disabling and persistent problem, in the short term. This study investigated the effects of sustained natural apophyseal glides (SNAGs) and passive joint mobilisations (PJMs) on cervicogenic dizziness compared to a placebo at 12 months post-treatment. Eighty-six participants (mean age 62 years, standard deviation (SD) 12.7) with chronic cervicogenic dizziness were randomised to receive SNAGs with self-SNAGs (n=29), PJMs with range-of-motion (ROM) exercises (n=29), or a placebo (n=28) for 2-6 sessions over 6 weeks. Outcome measures were dizziness intensity, dizziness frequency (rated between 0 [none] and 5 [>once/day]), the Dizziness Handicap Inventory (DHI), pain intensity, head repositioning accuracy (HRA), cervical spine ROM, balance, and global perceived effect (GPE). At 12 months both manual therapy groups had less dizziness frequency (mean difference SNAGs vs placebo-0.7, 95% confidence interval (CI)-1.3,-0.2, p=0.01; PJMs vs placebo-0.7,-1.2,-0.1, p=0.02), lower DHI scores (mean difference SNAGs vs placebo-8.9, 95% CI-16.3,-1.6, p=0.02; PJMs vs placebo-13.6,-20.8,-6.4, p<0.001) and higher GPE compared to placebo, whereas there were no between-group differences in dizziness intensity, pain intensity or HRA. There was greater ROM in all six directions for the SNAG group and in four directions for the PJM group compared to placebo, and small improvements in balance for the SNAG group compared to placebo. There were no adverse effects. These results provide evidence that both forms of manual therapy have long-term beneficial effects in the treatment of chronic cervicogenic dizziness.
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Nova |
2015 |
Rank MM, Flynn JR, Galea MP, Callister R, Callister RJ, 'Electrophysiological characterization of spontaneous recovery in deep dorsal horn interneurons after incomplete spinal cord injury', Experimental Neurology, 271 468-478 (2015) [C1]
In the weeks and months following an incomplete spinal cord injury (SCI) significant spontaneous recovery of function occurs in the absence of any applied therapeutic intervention... [more]
In the weeks and months following an incomplete spinal cord injury (SCI) significant spontaneous recovery of function occurs in the absence of any applied therapeutic intervention. The anatomical correlates of this spontaneous plasticity are well characterized, however, the functional changes that occur in spinal cord interneurons after injury are poorly understood. Here we use a T10 hemisection model of SCI in adult mice (9-10 wks old) combined with whole-cell patch clamp electrophysiology and a horizontal spinal cord slice preparation to examine changes in intrinsic membrane and synaptic properties of deep dorsal horn (DDH) interneurons. We made these measurements during short-term (4 wks) and long-term (10 wks) spontaneous recovery after SCI. Several important intrinsic membrane properties are altered in the short-term, but recover to values resembling those of uninjured controls in the longer term. AP discharge patterns are reorganized at both short-term and long-term recovery time points. This is matched by reorganization in the expression of voltage-activated potassium and calcium subthreshold-currents that shape AP discharge. Excitatory synaptic inputs onto DDH interneurons are significantly restructured in long-term SCI mice. Plots of sEPSC peak amplitude vs. rise times suggest considerable dendritic expansion or synaptic reorganization occurs especially during long-term recovery from SCI. Connectivity between descending dorsal column pathways and DDH interneurons is reduced in the short-term, but amplified in long-term recovery. Our results suggest considerable plasticity in both intrinsic and synaptic mechanisms occurs spontaneously in DDH interneurons following SCI and takes a minimum of 10 wks after the initial injury to stabilize.
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Nova |
2015 |
Hutchesson MJ, Rollo ME, Callister R, Collins CE, 'Self-Monitoring of Dietary Intake by Young Women: Online Food Records Completed on Computer or Smartphone Are as Accurate as Paper-Based Food Records but More Acceptable', Journal of the Academy of Nutrition and Dietetics, 115 87-94 (2015) [C1]
Adherence and accuracy of self-monitoring of dietary intake influences success in weight management interventions. Information technologies such as computers and smartphones have ... [more]
Adherence and accuracy of self-monitoring of dietary intake influences success in weight management interventions. Information technologies such as computers and smartphones have the potential to improve adherence and accuracy by reducing the burden associated with monitoring dietary intake using traditional paper-based food records. We evaluated the acceptability and accuracy of three different 7-day food record methods (online accessed via computer, online accessed via smartphone, and paper-based). Young women (N=18; aged 23.4±2.9 years; body mass index 24.0±2.2) completed the three 7-day food records in random order with 7-day washout periods between each method. Total energy expenditure (TEE) was derived from resting energy expenditure (REE) measured by indirect calorimetry and physical activity level (PAL) derived from accelerometers (TEE=REE×PAL). Accuracy of the three methods wasassessed by calculating absolute (energy intake [EI]-TEE) and percentage difference (EI/TEE×100) between self-reported EI and TEE. Acceptability was assessed via questionnaire. Mean±standard deviation TEE was 2,185±302 kcal/day and EI was 1,729±249 kcal/day, 1,675±287kcal/day, and 1,682±352 kcal/day for computer, smartphone, and paper records, respectively. There were no significant differences between absolute and percentage differences between EI and TEE for the three methods: computer, -510±389 kcal/day (78%); smartphone, -456±372 kcal/day (80%); and paper, -503±513 kcal/day (79%). Half of participants (n=9) preferred computer recording, 44.4% preferred smartphone, and 5.6% preferred paper-based records. Most participants (89%) least preferred the paper-based record. Because online food records completed on either computer or smartphone were as accurate as paper-based records but more acceptable to young women, they should be considered when self-monitoring of intake is recommended to young women.
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Nova |
2015 |
Adams V, Mathisen B, Baines S, Lazarus C, Callister R, 'Reliability of measurements of tongue and hand strength and endurance using the Iowa Oral Performance Instrument with elderly adults', DISABILITY AND REHABILITATION, 37 389-395 (2015) [C1]
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Nova |
2015 |
Harries SK, Lubans DR, Callister R, 'Systematic review and meta-analysis of linear and undulating periodized resistance training programs on muscular strength', Journal of Strength and Conditioning Research, 29 1113-1125 (2015) [C1]
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Nova |
2015 |
Baker AL, Richmond R, Kay-Lambkin FJ, Filia SL, Castle D, Williams JM, et al., 'Randomized controlled trial of a healthy lifestyle intervention among smokers with psychotic disorders', Nicotine and Tobacco Research, 17 946-954 (2015) [C1]
Introduction: People with severe mental disorders typically experience a range of health problems; consequently, interventions addressing multiple health behaviors may provide an ... [more]
Introduction: People with severe mental disorders typically experience a range of health problems; consequently, interventions addressing multiple health behaviors may provide an efficient way to tackle this major public health issue. This two-arm randomized controlled trial among people with psychotic disorders examined the efficacy of nicotine replacement therapy (NRT) plus either a faceto- face or predominantly telephone delivered intervention for smoking cessation and cardiovascular disease (CVD) risk reduction. Methods: Following baseline assessment and completion of a common, individually delivered 90-minute face-to-face intervention, participants (n = 235) were randomized to receive NRT plus: (1) a "Healthy Lifestyles" intervention for smoking cessation and CVD risk behaviors or (2) a predominantly telephone-based intervention (designed to control for NRT provision, session frequency, and other monitoring activities). Research assistants blind to treatment allocation performed assessments at 15 weeks (mid-intervention) and 12 months after baseline. Results: There were no significant differences between intervention conditions in CVD risk or smoking outcomes at 15 weeks or 12 months, with improvements in both conditions (eg, 12 months: 6.4% confirmed point prevalence abstinence rate; 17% experiencing a 50% or greater smoking reduction; mean reduction of 8.6 cigarettes per day; mean improvement in functioning of 9.8 points). Conclusions: The health disparity experienced by people with psychotic disorders is high. Faceto- face Healthy Lifestyle interventions appear to be feasible and somewhat effective. However, given the accessibility of telephone delivered interventions, potentially combined with lower cost, further studies are needed to evaluate telephone delivered smoking cessation and lifestyle interventions for people with psychotic disorders.
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2015 |
Hutchesson MJ, Rollo ME, Krukowski R, Ells L, Harvey J, Morgan PJ, et al., 'eHealth interventions for the prevention and treatment of overweight and obesity in adults: A systematic review with meta-analysis', Obesity Reviews, 16 376-392 (2015) [C1]
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2015 |
Dunn A, Marsden DL, Nugent E, Van Vliet P, Spratt NJ, Attia J, Callister R, 'Protocol variations and six-minute walk test performance in stroke survivors: A systematic review with meta-analysis', Stroke Research and Treatment, 2015 1-28 (2015) [C1]
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2015 |
Young MD, Plotnikoff RC, Collins CE, Callister R, Morgan PJ, 'Impact of a male-only weight loss maintenance programme on social-cognitive determinants of physical activity and healthy eating: A randomized controlled trial.', Br J Health Psychol, 20 724-744 (2015) [C1]
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2015 |
Aguiar EJ, Morgan PJ, Collins CE, Plotnikoff RC, Callister R, 'Characteristics of men classified at high-risk for type 2 diabetes mellitus using the AUSDRISK screening tool', Diabetes Research and Clinical Practice, 108 45-54 (2015) [C1]
Aims: The primary aim was to describe characteristics of men identified at high-risk for Type 2 diabetes mellitus (T2DM) using the Australian diabetes risk assessment (AUSDRISK) t... [more]
Aims: The primary aim was to describe characteristics of men identified at high-risk for Type 2 diabetes mellitus (T2DM) using the Australian diabetes risk assessment (AUSDRISK) tool. Secondary aims were to determine the prevalence of pre-diabetes and metabolic syndrome in these men. Methods: Men (n = 209) completed the AUSDRISK tool, with 165 identified as high-risk for T2DM (score = 12, maximum 38). Demographic, anthropometric, physiological and behavioural outcomes were assessed for 101 men. Comparisons (one-way ANOVA) among three AUSDRISK score groups (12-15, 16-19, = 20) were performed (significance level, P < 0.05). Results: Common risk factors (percentages) among high-risk men were waist circumference (>90cm; 93%), age (>44 years; 79%), physical activity level (<150minwk-1; 59%), family history of diabetes (39%) and previously high blood glucose levels (32%). Men with AUSDRISK scores =20 had higher (mean±SD) HbA1C (6.0±0.4% [42±4.4mmol.mol-1], P<0.001), FPG (5.3±0.6mmol.L-1, P=0.001) and waist circumference (113.2±9.8cm, P=0.026) than men with scores of 12-15. Mean FPG for the sample was 5.0±0.6mmol.L-1, whereas mean HbA1C was 5.8±0.5% [40±5.5mmol.mol-1]. Pre-diabetes prevalence was 70% and metabolic syndrome prevalence was 62%. Conclusions: The AUSDRISK tool identified men who were mostly older than 44, and had large waist circumferences and elevated HbA1C. These findings provide evidence supporting the usefulness of the AUSDRISK screening tool for T2DM screening in clinical and research settings.
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2015 |
Schumacher TL, Burrows TL, Thompson DI, Spratt NJ, Callister R, Collins CE, 'Feasibility of Recruiting Families into a Heart Disease Prevention Program Based on Dietary Patterns.', Nutrients, 7 7042-7057 (2015) [C1]
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2015 |
Williams RL, Wood LG, Collins CE, Callister R, 'Effectiveness of weight loss interventions - is there a difference between men and women: A systematic review', Obesity Reviews, 16 171-186 (2015) [C1]
Effective strategies are required to reduce the prevalence of overweight and obesity; however, the effectiveness of current weight loss programmes is variable. One contributing fa... [more]
Effective strategies are required to reduce the prevalence of overweight and obesity; however, the effectiveness of current weight loss programmes is variable. One contributing factor may be the difference in weight loss success between men and women. A systematic review was conducted to determine whether the effectiveness of weight loss interventions differs between men and women. Randomized controlled trials published up until March 2014 were included. Effect sizes (Hedges' g) were used to examine the difference in weight outcomes between men and women. A total of 58 studies met the eligibility criteria with 49 studies of higher quality included in the final data synthesis. Eleven studies that directly compared weight loss in men and women reported a significant sex difference. Ten of these reported that men lost more weight than women; however, women also lost a significant amount of weight. Analysis of effect sizes found small differences in weight loss favouring men for both diet (g=0.489) and diet plus exercise (g=0.240) interventions. There is little evidence from this review to indicate that men and women should adopt different weight loss strategies. Current evidence supports moderate energy restriction in combination with exercise for weight loss in both men and women.
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2015 |
Morton D, Callister R, 'Exercise-Related Transient Abdominal Pain (ETAP)', SPORTS MEDICINE, 45 23-35 (2015) [C1]
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2015 |
Plotnikoff RC, Costigan SA, Williams RL, Hutchesson MJ, Kennedy SG, Robards SL, et al., 'Effectiveness of interventions targeting physical activity, nutrition and healthy weight for university and college students: A systematic review and meta-analysis', International Journal of Behavioral Nutrition and Physical Activity, 12 1-10 (2015) [C1]
To examine the effectiveness of interventions aimed at improving physical activity, diet, and/or weight-related behaviors amongst university/college students. Five online database... [more]
To examine the effectiveness of interventions aimed at improving physical activity, diet, and/or weight-related behaviors amongst university/college students. Five online databases were searched (January 1970 to April 2014). Experimental study designs were eligible for inclusion. Data extraction was performed by one reviewer using a standardized form developed by the researchers and checked by a second reviewer. Data were described in a narrative synthesis and meta-analyses were conducted when appropriate. Study quality was also established. Forty-one studies were included; of these, 34 reported significant improvements in one of the key outcomes. Of the studies examining physical activity 18/29 yielded significant results, with meta-analysis demonstrating significant increases in moderate physical activity in intervention groups compared to control. Of the studies examining nutrition, 12/24 reported significantly improved outcomes; only 4/12 assessing weight loss outcomes found significant weight reduction. This appears to be the first systematic review of physical activity, diet and weight loss interventions targeting university and college students. Tertiary institutions are appropriate settings for implementing and evaluating lifestyle interventions, however more research is needed to improve such strategies.
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2015 |
Scott HA, Gibson PG, Garg ML, Pretto JJ, Morgan PJ, Callister R, Wood LG, 'Determinants of weight loss success utilizing a meal replacement plan and/or exercise, in overweight and obese adults with asthma', Respirology, 20 243-250 (2015) [C1]
Background and objective While weight loss has been shown to reduce obesity-related comorbidity, many weight loss treatments fail. Factors that enhance weight loss success are unk... [more]
Background and objective While weight loss has been shown to reduce obesity-related comorbidity, many weight loss treatments fail. Factors that enhance weight loss success are unknown, particularly in those with asthma. The aim of the study was to identify patient characteristics that predict weight loss success in adults with asthma. Methods Baseline and change in asthma characteristics and eating behaviours were investigated for relationships with weight loss and fat loss using multiple linear regression, in 38 overweight and obese adults with asthma randomized to dietary, exercise or combined interventions targeting weight loss for 10 weeks. Results Mean ± standard deviation weight loss was 6.6 ± 5.1 kg. Greater %weight loss and %fat loss was achieved in those with poorer asthma-related quality of life at baseline ((rs = 0.398, P = 0.015) and (rs = 0.455, P = 0.005) respectively), with 1.7% greater absolute weight loss at week 10 corresponding to each one unit reduction in the asthma-related quality of life score at baseline. Furthermore, a lower baseline forced expiratory volume in 1 s/forced vital capacity correlated with greater weight loss (rs = 0.398, P = 0.015). Male sex was associated with a 3.6 kg greater weight loss (P = 0.087). Reducing emotional eating during the programme was associated with greater weight loss in women (rs = 0.576, P = 0.010). Conclusions This study demonstrates that individuals with more severe asthma at baseline are more successful in achieving weight loss, which could be a consequence of greater motivation and could be used as a motivational tool within the clinical setting. Gender tailoring of weight loss programmes may be useful to enhance weight loss success. Future studies are urgently needed to establish predictors of long-term weight loss maintenance in those with asthma. See Editorial, page 179 This study is the first to demonstrate that more severe asthma at baseline, male sex, and improvements in eating behaviours during weight loss are associated with greater weight loss success in overweight and obese adults with asthma. Our findings may inform the development of asthma-specific weight management guidelines.
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2015 |
Cohen KE, Morgan PJ, Plotnikoff RC, Callister R, Lubans DR, 'Physical activity and skills intervention: SCORES cluster randomized controlled trial', Medicine and Science in Sports and Exercise, 47 765-774 (2015) [C1]
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2015 |
Nugent EP, Snodgrass SJ, Callister R, 'The effect of velocity and familiarisation on the reproducibility of isokinetic dynamometry', Isokinetics and Exercise Science, 23 205-214 (2015) [C1]
BACKGROUND: The reproducibility of the HUMAC-NORM isokinetic dynamometer has not yet been established for the muscles around the knee. Previous research suggests practice-based im... [more]
BACKGROUND: The reproducibility of the HUMAC-NORM isokinetic dynamometer has not yet been established for the muscles around the knee. Previous research suggests practice-based improvement (PBI) may impact upon the reproducibility of isokinetic testing. OBJECTIVE: To investigate test-retest reproducibility of knee flexion and extension isokinetic findings at different velocities, including the influence of familiarisation. METHODS: Seventy physically active, healthy participants with no experience in isokinetic dynamometry performed five repetitions of continuous concentric knee flexion and extension at 60, 120, 180 and 240°/s on four occasions. Peak moment, angle of peak moment, total work and average power were recorded. Reproducibility was determined using percentage change in the mean, typical error and intraclass correlation coefficients (ICC). RESULTS: For knee flexion and extension, group data met desirable reproducibility criteria for most outcomes and velocities after Trial 2. Within-subject reproducibility generally met acceptable reliabilty criteria after Trial 2 for knee extension, but was predominantly unacceptable for knee flexion. ICC's were acceptable from Trial 2, except for angle of peak moment which did not achieve an acceptable level of reliabilty across any trials, outcomes or velocities. CONCLUSIONS: The HUMAC-NORM demonstrates excellent reproducibility for peak moment, average power and total work parameters for the major knee muscles after one trial. One familiarisation session is recommended prior to testing to minimise the impact of PBI. Additional familiarisation is beneficial when testing individuals, higher velocities and knee flexion.
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2015 |
Stevens CJ, Hacene J, Sculley DV, Taylor L, Callister R, Dascombe B, 'The Reliability of Running Performance in a 5 km Time Trial on a Non-motorized Treadmill', International Journal of Sports Medicine, 36 705-709 (2015) [C1]
The purpose of the study was to establish the reliability of performance and physiological responses during a self-paced 5 km running time trial on a non-motorized treadmill. 17 m... [more]
The purpose of the study was to establish the reliability of performance and physiological responses during a self-paced 5 km running time trial on a non-motorized treadmill. 17 male runners (age: 32±13 years, height: 177±7 cm, body mass: 71±9 kg, sum of 7 skinfolds: 55±21 mm) performed familiarization then 2 separate maximal 5 km running time trials on a non-motorized treadmill. Physiological responses measured included heart rate, oxygen uptake, expired air volume, blood lactate concentration, tissue saturation index and integrated electromyography. Running time (1 522±163 s vs. 1 519±162 s for trials 1 and 2, respectively) demonstrated a low CV of 1.2% and high ICC of 0.99. All physiological variables had CVs of less than 4% and ICCs of >0.92, with the exception of blood lactate concentration (7.0±2 mmol·L-1 vs. 6.5±1.5 mmol·L-1 for trials 1 and 2, respectively; CV: 12%, ICC: 0.83) and the electromyography measures (CV: 8-27%, ICC: 0.71-0.91). The data demonstrate that performance time in a 5 km running time trial on a non-motorized treadmill is a highly reliable test. Most physiological responses measured across the 5 km run also demonstrated good reliability.
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2014 |
O'Brien KM, Hutchesson MJ, Jensen M, Morgan P, Callister R, Collins CE, 'Participants in an online weight loss program can improve diet quality during weight loss: a randomized controlled trial.', Nutrition journal, 13 82 (2014) [C1]
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2014 |
Adams V, Mathisen B, Baines S, Lazarus C, Callister R, 'Reliability of measurements of tongue and hand strength and endurance using the iowa oral performance instrument with healthy adults', Dysphagia, 29 83-95 (2014) [C1]
The purpose of this study was to investigate the reliability of tongue and handgrip strength and endurance measurements in healthy adults using the Iowa Oral Performance Instrumen... [more]
The purpose of this study was to investigate the reliability of tongue and handgrip strength and endurance measurements in healthy adults using the Iowa Oral Performance Instrument. Fifty-one healthy participants (21 males, 30 females; age range = 19-57 years) were tested on four occasions 1 week apart to determine test-retest reliability. The primary outcome measures were isometric tongue and handgrip strength (best of three trials) and sustained isometric endurance. Small increases (changes in group mean) in both anterior (1.7 %) and posterior (2.5 %) tongue strength and handgrip strength (5 %) between weeks 1 and 2 were observed with no change in subsequent weeks, suggesting that there is only a small learning effect for these measurements. The within-subject variation (mean-typical error expressed as a coefficient of variation [CV]) indicated higher than desirable initial variation for anterior (CV 10.8 %) and posterior (CV 11.8 %) tongue strength and handgrip strength (CV 15.2 %) but this was reduced in weeks 2-4. Intraclass correlation coefficients (ICC) indicated acceptable and improved reliability for both anterior (ICC 0.77-0.90) and posterior (ICC 0.79-0.86) tongue strength and handgrip strength (ICC 0.69-0.91) after week 1. Additional exploratory analyses were conducted with a subset of data to determine whether two values within 5 kPa (tongue) or 15 kPa (handgrip) provide superior strength reliability. Neither tongue nor hand endurance measurements were sufficiently reliable. These findings suggest that tongue and handgrip strength values demonstrate acceptable reliability, especially if familiarization is provided. Further investigation is needed to reduce sources of variability in tongue endurance measurements. © 2013 Springer Science+Business Media New York.
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2014 |
Baker AL, Turner A, Kelly PJ, Spring B, Callister R, Collins CE, et al., ''Better Health Choices' by telephone: A feasibility trial of improving diet and physical activity in people diagnosed with psychotic disorders', Psychiatry Research, (2014) [C1]
The study objective was to evaluate the feasibility of a telephone delivered intervention consisting of motivational interviewing and cognitive behavioural strategies aimed at imp... [more]
The study objective was to evaluate the feasibility of a telephone delivered intervention consisting of motivational interviewing and cognitive behavioural strategies aimed at improving diet and physical activity in people diagnosed with psychotic disorders. Twenty participants diagnosed with a non-acute psychotic disorder were recruited. The intervention consisted of eight telephone delivered sessions targeting fruit and vegetable (F&V) consumption and leisure screen time, as well as smoking and alcohol use (as appropriate). F&V frequency and variety, and overall diet quality (measured by the Australian Recommended Food Score, ARFS), leisure screen time, overall sitting and walking time, smoking, alcohol consumption, mood, quality of life, and global functioning were examined before and 4-weeks post-treatment. Nineteen participants (95%) completed all intervention sessions, and 17 (85%) completed follow-up assessments. Significant increases from baseline to post-treatment were seen in ARFS fruit, vegetable and overall diet quality scores, quality of life and global functioning. Significant reductions in leisure screen time and overall sitting time were also seen. Results indicated that a telephone delivered intervention targeting key cardiovascular disease risk behaviours appears to be feasible and relatively effective in the short-term for people diagnosed with psychosis. A randomized controlled trial is warranted to replicate and extend these findings. © 2014 Elsevier Ireland Ltd. All rights reserved.
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2014 |
Reid SA, Callister R, Katekar MG, Rivett DA, 'Effects of cervical spine manual therapy on range of motion, head repositioning, and balance in participants with cervicogenic dizziness: A randomized controlled trial', Archives of Physical Medicine and Rehabilitation, 95 1603-1612 (2014) [C1]
Objective To evaluate and compare the effects of 2 manual therapy interventions on cervical spine range of motion (ROM), head repositioning accuracy, and balance in patients with ... [more]
Objective To evaluate and compare the effects of 2 manual therapy interventions on cervical spine range of motion (ROM), head repositioning accuracy, and balance in patients with chronic cervicogenic dizziness. Design Randomized controlled trial with 12-week follow-up using blinded outcome assessment. Setting University School of Health Sciences. Participants Participants (N=86; mean age ± SD, 62.0±12.7y; 50% women) with chronic cervicogenic dizziness. Interventions Participants were randomly assigned to 1 of 3 groups: sustained natural apophyseal glides (SNAGs) with self-SNAG exercises, passive joint mobilization (PJM) with ROM exercises, or a placebo. Participants each received 2 to 6 treatments over 6 weeks. Main Outcome Measures Cervical ROM, head repositioning accuracy, and balance. Results SNAG therapy resulted in improved (P=.05) cervical spine ROM in all 6 physiological cervical spine movement directions immediately posttreatment and at 12 weeks. Treatment with PJM resulted in improvement in 1 of the 6 cervical movement directions posttreatment and 1 movement direction at 12 weeks. There was a greater improvement (P<.01) after SNAGs than PJM in extension (mean difference, -7.5°; 95% confidence interval [CI], -13° to -2.0°) and right rotation (mean difference, -6.8°; 95% CI, -11.5° to -2.1=) posttreatment. Manual therapy had no effect on balance or head repositioning accuracy. Conclusions SNAG treatment improved cervical ROM, and the effects were maintained for 12 weeks after treatment. PJM had very limited impact on cervical ROM. There was no conclusive effect of SNAGs or PJMs on joint repositioning accuracy or balance in people with cervicogenic dizziness. © 2014 by the American Congress of Rehabilitation Medicine.
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2014 |
Reid SA, Rivett DA, Katekar MG, Callister R, 'Comparison of mulligan sustained natural apophyseal glides and maitland mobilizations for treatment of cervicogenic dizziness: A randomized controlled trial', Physical Therapy, 94 466-476 (2014) [C1]
Background There is short-term evidence for treatment of cervicogenic dizziness with Mulligan sustained natural apophyseal glides (SNAGs) but no evidence for treatment with Maitla... [more]
Background There is short-term evidence for treatment of cervicogenic dizziness with Mulligan sustained natural apophyseal glides (SNAGs) but no evidence for treatment with Maitland mobilizations. Objective The purpose of this study was to compare the effectiveness of SNAGs and Maitland mobilizations for cervicogenic dizziness. Design A double-blind, parallel-arm randomized controlled trial was conducted. Setting The study was conducted at a university in Newcastle, Australia. Participants Eighty-six people with cervicogenic dizziness were the study participants. Interventions Included participants were randomly allocated to receive 1 of 3 interventions: Mulligan SNAGs (including self-administered SNAGs), Maitland mobilizations plus range-of-motion exercises, or placebo. Measurements The primary outcome measure was intensity of dizziness. Other outcome measures were: frequency of dizziness, the Dizziness Handicap Inventory (DHI), intensity of pain, and global perceived effect (GPE). Results Both manual therapy groups had reduced dizziness intensity and frequency posttreatment and at 12 weeks compared with baseline. There was no change in the placebo group. Both manual therapy groups had less dizziness intensity posttreatment (SNAGs: mean difference=-20.7, 95% confidence interval [95% CI]=-33.6, -7.7; mobilizations: mean difference=-15.2, 95% CI=-27.9, -2.4) and at 12 weeks (SNAGs: mean difference=-18.4, 95% CI=-31.3, -5.4; mobilizations: mean difference=-14.4, 95% CI=-27.4, -1.5) compared with the placebo group. Compared with the placebo group, both the SNAG and Maitland mobilization groups had less frequency of dizziness at 12 weeks. There were no differences between the 2 manual therapy interventions for these dizziness measures. For DHI and pain, all 3 groups improved posttreatment and at 12 weeks. Both manual therapy groups reported a higher GPE compared with the placebo group. There were no treatment-related adverse effects lasting longer than 24 hours. Limitations The therapist performing the interventions was not blind to group allocation. Conclusions Both SNAGs and Maitland mobilizations provide comparable immediate and sustained (12 weeks) reductions in intensity and frequency of chronic cervicogenic dizziness. © 2014 American Physical Therapy Association.
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2014 |
Morgan PJ, Collins CE, Plotnikoff RC, Callister R, Burrows T, Fletcher R, et al., 'The 'Healthy Dads, Healthy Kids' community randomized controlled trial: A community-based healthy lifestyle program for fathers and their children', Preventive Medicine, 61 90-99 (2014) [C1]
Objective: To evaluate the effectiveness of the 'Healthy Dads, Healthy Kids (HDHK)' program when delivered by trained facilitators in community settings. Method: A two-a... [more]
Objective: To evaluate the effectiveness of the 'Healthy Dads, Healthy Kids (HDHK)' program when delivered by trained facilitators in community settings. Method: A two-arm randomized controlled trial of 93 overweight/obese fathers (mean [SD] age=40.3 [5.3] years; BMI=32.5 [3.8] kg/m2) and their primary school-aged children (n=132) from the Hunter Region, Australia. In 2010-2011, families were randomized to either: (i) HDHK intervention (n=48 fathers, n=72 children) or (ii) wait-list control group. The 7-week intervention included seven sessions and resources (booklets, pedometers). Assessments were held at baseline and 14-weeks with fathers' weight (kg) as the primary outcome. Secondary outcomes for fathers and children included waist, BMI, blood pressure, resting heart rate, physical activity (pedometry), and self-reported dietary intake and sedentary behaviors. Results: Linear mixed models (intention-to-treat) revealed significant between-group differences for fathers' weight (P < .001, d= 0.24), with HDHK fathers losing more weight (- 3.3. kg; 95%CI, - 4.3, - 2.4) than control fathers (0.1. kg; 95%CI, - 0.9,1.0). Significant treatment effects (P < .05) were also found for fathers' waist (d= 0.41), BMI (d= 0.26), resting heart rate (d= 0.59), energy intake (d= 0.49) and physical activity (d= 0.46) and for children's physical activity (d= 0.50) and adiposity (d= 0.07). Discussion: HDHK significantly improved health outcomes and behaviors in fathers and children, providing evidence for program effectiveness when delivered in a community setting. © 2014 Published by Elsevier Inc.
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2014 |
Hutchesson MJ, Collins CE, Morgan PJ, Watson JF, Guest M, Callister R, 'Changes to dietary intake during a 12-week commercial web-based weight loss program: a randomized controlled trial.', European journal of clinical nutrition, 68 64-70 (2014) [C1]
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2014 |
Summers KM, Snodgrass SJ, Callister R, 'Predictors of Calf Cramping in Rugby League', JOURNAL OF STRENGTH AND CONDITIONING RESEARCH, 28 774-783 (2014) [C1]
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2014 |
Farrell KE, Keely S, Graham BA, Callister R, Callister RJ, 'A Systematic Review of the Evidence for Central Nervous System Plasticity in Animal Models of Inflammatory-mediated Gastrointestinal Pain', INFLAMMATORY BOWEL DISEASES, 20 176-195 (2014) [C1]
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2014 |
Schumacher TL, Dewar DL, Lubans DR, Morgan PJ, Watson J, Guest M, et al., 'Dietary patterns of adolescent girls attending schools in low-income communities highlight low consumption of core foods', Nutrition and Dietetics, 71 127-134 (2014) [C1]
Aim: Overweight and obesity prevalence is high among adolescent girls of low socioeconomic position and this increases their risk of cardiovascular disease and metabolic disorders... [more]
Aim: Overweight and obesity prevalence is high among adolescent girls of low socioeconomic position and this increases their risk of cardiovascular disease and metabolic disorders in adulthood. The aim of this present study was to describe the dietary patterns of adolescent girls in terms of the relative contribution of core food groups to overall diet and by weight status category. Methods: Year 8 female students were recruited from schools in low-income communities. Weight status (i.e. underweight, healthy weight, overweight, obese) was determined using age- and sex-adjusted body mass index (BMI; z score). Dietary intakes were assessed using a validated semi-quantitative food frequency questionnaire. Individual foods were collated into core food group or energy-dense, nutrient-poor categories in line with the Australian Guide to Healthy Eating (AGHE) and the percentage contribution to total energy intake calculated. Results: Participants (n = 332) were (mean ± SD) 13.7 ± 0.4 years old with BMI z score 0.63 ± 1.22. Few girls met AGHE core food group recommendations for daily serves; meat and substitutes 69.3%, vegetables 28.6%, fruit 23.8%, dairy 15.7% and breads/cereals 5.7%. Total percentage energy derived from energy-dense, nutrient-poor foods was 46.6% (37.2-54.6%) (median (interquartile range)), with takeaways 9.8% (7.0-13.6%), confectionery 7.0% (4.1-10.9%) and packaged snacks 6.8% (4.0-10.7%), with no significant differences by weight status. Conclusions: Core food intakes are poor with excessive consumption of energy-dense, nutrient-poor foods in these adolescent girls. Nutrition education programs targeting this population are needed to address this imbalance. Strategies could include substitution of unhealthy snacks for core food items and greater inclusion of core foods within main meals. © 2013 Dietitians Association of Australia.
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2014 |
Young MD, Plotnikoff RC, Collins CE, Callister R, Morgan PJ, 'Social cognitive theory and physical activity: A systematic review and meta-analysis', Obesity Reviews, 15 983-995 (2014) [C1]
This review investigated three research questions (i) What is the utility of social cognitive theory (SCT) to explain physical activity (PA)?; (ii) Is the effectiveness of SCT mod... [more]
This review investigated three research questions (i) What is the utility of social cognitive theory (SCT) to explain physical activity (PA)?; (ii) Is the effectiveness of SCT moderated by sample or methodological characteristics? and (iii) What is the frequency of significant associations between the core SCT constructs and PA? Ten electronic databases were searched with no date or sample restrictions. Forty-four studies were retrieved containing 55 SCT models of PA. Methodological quality was assessed using a standardized tool. A random-effects meta-analysis revealed that SCT accounted for 31% of the variance in PA. However, methodological quality was mostly poor for these models. Methodological quality and sample age moderated the PA effect size, with increases in both associated with greater variance explained. Although self-efficacy and goals were consistently associated with PA, outcome expectations and socio-structural factors were not. This review determined that SCT is a useful framework to explain PA behaviour. Higher quality models explained more PA variance, but overall methodological quality was poor. As such, high-quality studies examining the utility of SCT to explain PA are warranted.
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2014 |
Morgan PJ, Scott HA, Young MD, Plotnikoff RC, Collins CE, Callister R, 'Associations between program outcomes and adherence to Social Cognitive Theory tasks: process evaluation of the SHED-IT community weight loss trial for men', INTERNATIONAL JOURNAL OF BEHAVIORAL NUTRITION AND PHYSICAL ACTIVITY, 11 (2014) [C1]
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2014 |
Young MD, Collins CE, Callister R, Plotnikoff RC, Doran CM, Morgan PJ, 'The SHED-IT Weight Loss Maintenance trial protocol: A randomised controlled trial of a weight loss maintenance program for overweight and obese men', CONTEMPORARY CLINICAL TRIALS, 37 84-97 (2014) [C3]
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2014 |
Aguiar EJ, Morgan PJ, Collins CE, Plotnikoff RC, Young MD, Callister R, 'The PULSE (Prevention Using LifeStyle Education) trial protocol: a randomised controlled trial of a Type 2 Diabetes Prevention programme for men.', Contemporary clinical trials, 39 132-144 (2014) [C1]
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2014 |
Blomfield RL, Collins CE, Hutchesson MJ, Young MD, Jensen ME, Callister R, Morgan PJ, 'Impact of self-help weight loss resources with or without online support on the dietary intake of overweight and obese men: The SHED-IT randomised controlled trial', Obesity Research and Clinical Practice, 8 e476-e487 (2014) [C1]
Background: Obese men are more likely to have poor dietary patterns compared to women, increasing diet-related chronic disease risk. The impact of a male-only weight loss interven... [more]
Background: Obese men are more likely to have poor dietary patterns compared to women, increasing diet-related chronic disease risk. The impact of a male-only weight loss intervention on dietary intakes is under-evaluated. The aim was to deter-mine whether overweight/obese men randomised to self-help paper-based resources with or without online support, achieved greater improvements in diet compared with Wait-list controls at 3 and 6 months following a gender tailored weight-loss intervention.
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2014 |
Schumacher T, Burrows T, Cliff D, Jones R, Okely A, Baur L, et al., 'Dietary Intake Is Related to Multifactor Cardiovascular Risk Score in Obese Boys', Healthcare, 2 282-298 (2014) [C1]
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2014 |
Aguiar EJ, Morgan PJ, Collins CE, Plotnikoff RC, Callister R, 'Efficacy of interventions that include diet, aerobic and resistance training components for type 2 diabetes prevention: A systematic review with meta-analysis', International Journal of Behavioral Nutrition and Physical Activity, 11 (2014) [C1]
Current recommendations for the prevention of type 2 diabetes advise modification of diet and exercise behaviors including both aerobic and resistance training. However, the effic... [more]
Current recommendations for the prevention of type 2 diabetes advise modification of diet and exercise behaviors including both aerobic and resistance training. However, the efficacy of multi-component interventions involving a combination of these three components has not been established. The aims of this review were to systematically review and meta-analyze the evidence on multi-component (diet + aerobic exercise + resistance training) lifestyle interventions for type 2 diabetes prevention. Eight electronic databases (Medline, Embase, SportDiscus, Web of Science, CINAHL, Informit health collection, Cochrane library and Scopus) were searched up to June 2013. Eligible studies 1) recruited prediabetic adults or individuals at risk of type 2 diabetes; 2) conducted diet and exercise [including both physical activity/aerobic and resistance training] programs; and 3) reported weight and plasma glucose outcomes. In total, 23 articles from eight studies were eligible including five randomized controlled trials, one quasi-experimental, one two-group comparison and one single-group pre-post study. Four studies had a low risk of bias (score = 6/10). Median intervention length was 12 months (range 4-48 months) with a follow-up of 18 months (range 6.5 - 48 months). The diet and exercise interventions varied slightly in terms of their specific prescriptions. Meta-analysis favored interventions over controls for weight loss (-3.79 kg [-6.13, -1.46; 95% CI], Z = 3.19, P = 0.001) and fasting plasma glucose (-0.13 mmol.L-1 [-0.24, -0.02; 95% CI], Z = 2.42, P = 0.02). Diabetes incidence was only reported in two studies, with reductions of 58% and 56% versus control groups. In summary, multi-component lifestyle type 2 diabetes prevention interventions that include diet and both aerobic and resistance exercise training are modestly effective in inducing weight loss and improving impaired fasting glucose, glucose tolerance, dietary and exercise outcomes in at risk and prediabetic adult populations. These results support the current exercise guidelines for the inclusion of resistance training in type 2 diabetes prevention, however there remains a need for more rigorous studies, with long-term follow-up evaluating program efficacy, muscular fitness outcomes, diabetes incidence and risk reduction. © 2014 Aguiar et al.; licensee BioMed Central Ltd.
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2014 |
Cohen KE, Morgan PJ, Plotnikoff RC, Callister R, Lubans DR, 'Fundamental movement skills and physical activity among children living in low-income communities: A cross-sectional study', International Journal of Behavioral Nutrition and Physical Activity, 11 (2014) [C1]
Background: Although previous studies have demonstrated that children with high levels of fundamental movement skill competency are more active throughout the day, little is known... [more]
Background: Although previous studies have demonstrated that children with high levels of fundamental movement skill competency are more active throughout the day, little is known regarding children's fundamental movement skill competency and their physical activity during key time periods of the school day (i.e., lunchtime, recess and after-school). The purpose of this study was to examine the associations between fundamental movement skill competency and objectively measured moderate-to-vigorous physical activity (MVPA) throughout the school day among children attending primary schools in low-income communities.Methods: Eight primary schools from low-income communities and 460 children (8.5 ± 0.6 years, 54% girls) were involved in the study. Children's fundamental movement skill competency (TGMD-2; 6 locomotor and 6 object-control skills), objectively measured physical activity (ActiGraph GT3X and GT3X + accelerometers), height, weight and demographics were assessed. Multilevel linear mixed models were used to assess the cross-sectional associations between fundamental movement skills and MVPA.Results: After adjusting for age, sex, BMI and socio-economic status, locomotor skill competency was positively associated with total (P = 0.002, r = 0.15) and after-school (P = 0.014, r = 0.13) MVPA. Object-control skill competency was positively associated with total (P < 0.001, r = 0.20), lunchtime (P = 0.03, r = 0.10), recess (P = 0.006, r = 0.11) and after-school (P = 0.022, r = 0.13) MVPA.Conclusions: Object-control skill competency appears to be a better predictor of children's MVPA during school-based physical activity opportunities than locomotor skill competency. Improving fundamental movement skill competency, particularly object-control skills, may contribute to increased levels of children's MVPA throughout the day.Trial registration: Australian New Zealand Clinical Trials Registry No: ACTRN12611001080910. © 2014 Cohen et al.; licensee BioMed Central Ltd.
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2013 |
Collins CE, Morgan PJ, Hutchesson MJ, Callister R, 'Efficacy of standard versus enhanced features in a Web-based commercial weight-loss program for obese adults, part 2: Randomized controlled trial', Journal of Medical Internet Research, 15 84-105 (2013) [C1]
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2013 |
Hutchesson MJ, Collins CE, Morgan PJ, Callister R, 'An 8-week Web-based weight loss challenge with celebrity endorsement and enhanced social support: Observational study', Journal of Medical Internet Research, 15 25-32 (2013) [C1]
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2013 |
Collins CE, Neve MJ, Morgan PJ, Fletcher K, Williams R, Young M, Callister R, 'Effectiveness of interventions with a dietary component on weight loss maintenance: A systematic review', The JBI Database of Systematic Reviews & Implementation Reports, 11 317-414 (2013) [C1]
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2013 |
Adams V, Mathisen B, Baines S, Lazarus C, Callister R, 'A Systematic Review and Meta-analysis of Measurements of Tongue and Hand Strength and Endurance Using the Iowa Oral Performance Instrument (IOPI)', DYSPHAGIA, 28 350-369 (2013) [C1]
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2013 |
Burrows TL, Truby H, Morgan PJ, Callister R, Davies PSW, Collins CE, 'A comparison and validation of child versus parent reporting of children's energy intake using food frequency questionnaires versus food records: Who's an accurate reporter?', Clinical Nutrition, 32 613-618 (2013) [C1]
Background & aims: The aim of this study was to (i) to compare the accuracy of reporting for child's total energy intake from a food frequency questionnaire (FFQ) complet... [more]
Background & aims: The aim of this study was to (i) to compare the accuracy of reporting for child's total energy intake from a food frequency questionnaire (FFQ) completed independently by the mother, father and child in comparison to total energy expenditure (TEE) measured using doubly labeled water (DLW) (ii) compare the accuracy of the weighed food record (WFR) and DLW. Methods: Healthy weight children (mean±SD age 9.8±1.3years, n=6 girls/3 boys) and their parents independently completed an FFQ about children's intake. A 4-day WFR of child intake was recorded simultaneously. The accuracy of energy intakes reports were determined by the absolute and percentage differences between estimated energy intake and TEE measured by DLW. Results: The mean difference (limits of agreement LOA, ±2SD) when compared to DLW was; child 130 (-1518, 1258)kcal or (113±35% of TEE); father 398 (0,796)kcal or (121±13%); mother 807 (-213, 1824)kcal or (144±26%) and for the WFR-153 (1089,-1395)kcal or 95±32%. Conclusions: Children were the most accurate reporters when compared to their parents, with fathers more accurate than mothers. The 4-day WFR was approximately equal to the child report FFQ in estimating EI in children 8-11 years. © 2012 Elsevier Ltd and European Society for Clinical Nutrition and Metabolism.
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2013 |
Stevens CJ, Dascombe B, Boyko A, Sculley D, Callister R, 'Ice slurry ingestion during cycling improves Olympic distance triathlon performance in the heat', Journal of Sports Sciences, 31 1271-1279 (2013) [C1]
This study investigated the effect of ice slurry ingestion during a triathlon on intragastric temperature and 10 km running performance in the heat. Nine well-trained male triathl... [more]
This study investigated the effect of ice slurry ingestion during a triathlon on intragastric temperature and 10 km running performance in the heat. Nine well-trained male triathletes performed two randomised trials of a simulated Olympic distance triathlon in hot conditions (32-34°C). Exercise intensity during the swim (1500 m) and cycle (1 hr) legs was standardised, and the 10 km run leg was a self-paced time trial. During the cycle leg, either 10 g · kgBM-1 of ice slurry (< 1°C) or room temperature fluid (32-34°C) was ingested. In the run leg of the ice slurry trial, performance time (43.4 ± 3.7 vs. 44.6 ± 4.0 min; P = 0.03), intragastric temperature (at 1.5 km; 35.5 ± 1.2 vs. 37.5 ± 0.4°C; P = 0.002) and perceived thermal stress (at 5 km; 73 ± 9 vs. 80 ± 7 mm; P = 0.04) were significantly lower. Oxygen consumption was significantly higher in the ice trial between 9.5-10 km (52.4 ± 3.4 vs. 47.8 ± 5.4 mL · kg-1 · min-1; P = 0.04). The results suggest ice slurry ingestion was an effective ergogenic aid for triathlon running performance in the heat. The attenuation of intragastric temperature and perceived thermal stress were likely contributors to the self-selection of a higher running intensity and improved performance time. © 2013 Taylor & Francis.
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2013 |
Bartholomeusz MD, Callister R, Hodgson DM, 'Altered psychophysiological reactivity as a prognostic indicator of early childhood stress in chronic pain', MEDICAL HYPOTHESES, 80 146-149 (2013) [C1]
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2013 |
Dewar DL, Morgan PJ, Plotnikoff RC, Okely AD, Collins CE, Batterham M, et al., 'The nutrition and enjoyable activity for teen girls study: A cluster randomized controlled trial', American Journal of Preventive Medicine, 45 313-317 (2013) [C1]
Background Obesity prevention among youth of low SES is a public health priority given the higher prevalence of youth obesity in this population subgroup. Purpose To evaluate the ... [more]
Background Obesity prevention among youth of low SES is a public health priority given the higher prevalence of youth obesity in this population subgroup. Purpose To evaluate the 24-month impact of a school-based obesity prevention program among adolescent girls living in low-income communities. Design The study was a school-based group RCT, the Nutrition and Enjoyable Activity for Teen Girls (NEAT Girls) intervention. Setting/participants The study involved 12 secondary schools located in low-income communities in New South Wales, Australia. Participants were 357 adolescent girls (aged 13.2±0.5 years). Intervention The 12-month multicomponent intervention was guided by social cognitive theory and involved strategies to promote physical activity, reduce sedentary behaviors, and improve dietary outcomes. Main outcome measures The primary outcome was BMI, and secondary outcomes were BMI z-score; percentage body fat (bioelectrical impedance analysis); physical activity (accelerometers); dietary intake; and recreational screen-time (self-report). Data were collected in 2010-2012 and analyzed in 2012. Results After 24 months, there were no intervention effects on BMI (adjusted mean difference -0.33, 95% CI= -0.97, 0.28, p=0.353) and BMI z-score (-0.12, 95% CI= -0.27, 0.04, p=0.178). However, there was a group-by-time interaction for percentage body fat (-1.96%, 95% CI= -3.02, -0.89, p=0.006). Intervention effects for physical activity, screen time, and dietary intake were not significant. Conclusions The NEAT Girls intervention did not result in effects on the primary outcome. Further study of youth who are "at risk" of obesity should focus on strategies to improve retention and adherence in prevention programs. Trial registration This study is registered at Australian New Zealand Clinical Trials ACTRN1261000033004. © 2013 American Journal of Preventive Medicine.
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2013 |
Morgan PJ, Callister R, Collins CE, Plotnikoff RC, Young MD, Berry N, et al., 'The SHED-IT Community Trial: A Randomized Controlled Trial of Internet- and Paper-Based Weight Loss Programs Tailored for Overweight and Obese Men', ANNALS OF BEHAVIORAL MEDICINE, 45 139-152 (2013) [C1]
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2013 |
Flynn JR, Dunn LR, Galea MP, Callister R, Callister RJ, Rank MM, 'Exercise Training after Spinal Cord Injury Selectively Alters Synaptic Properties in Neurons in Adult Mouse Spinal Cord', JOURNAL OF NEUROTRAUMA, 30 891-896 (2013) [C1]
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2013 |
Hutchesson MJ, Truby H, Callister R, Morgan PJ, Davies PSW, Collins CE, 'Can a web-based food record accurately assess energy intake in overweight and obese women? A pilot study', JOURNAL OF HUMAN NUTRITION AND DIETETICS, 26 140-144 (2013) [C1]
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2013 |
Scott HA, Gibson PG, Garg ML, Pretto JJ, Morgan PJ, Callister R, Wood LG, 'Dietary restriction and exercise improve airway inflammation and clinical outcomes in overweight and obese asthma: a randomized trial', Clinical and Experimental Allergy, 43 36-49 (2013) [C1]
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2013 |
Marsden DL, Dunn A, Callister R, Levi CR, Spratt NJ, 'Characteristics of Exercise Training Interventions to Improve Cardiorespiratory Fitness After Stroke: A Systematic Review With Meta-analysis', NEUROREHABILITATION AND NEURAL REPAIR, 27 775-788 (2013) [C1]
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2013 |
Collins CE, Jensen ME, Young MD, Callister R, Plotnikoff RC, Morgan PJ, 'Improvement in erectile function following weight loss in obese men: The SHED-IT randomized controlled trial', Obesity Research and Clinical Practice, 7 (2013) [C1]
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2013 |
Collins CE, Burrows TL, Truby H, Morgan PJ, Wright IMR, Davies PSW, Callister R, 'Comparison of Energy Intake in Toddlers Assessed by Food Frequency Questionnaire and Total Energy Expenditure Measured by the Doubly Labeled Water Method', Journal of the Academy of Nutrition and Dietetics, 113 459-463 (2013) [C1]
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Nova |
2012 |
Nasstasia Y, Baker AL, Callister R, Halpin SA, 'Born to run, workout or maybe try Zumba: Managing depression with exercise', In Psych, 34 18-19 (2012) [C3]
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2012 |
Burrows TL, Morgan PJ, Lubans DR, Callister R, Okely T, Bray JF, Collins CE, 'Dietary outcomes of the Healthy Dads Healthy Kids randomised controlled trial', Journal of Pediatric Gastroenterology and Nutrition, 55 408-411 (2012) [C1]
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2012 |
Freeman EE, Fletcher R, Collins CE, Morgan PJ, Burrows TL, Callister R, 'Preventing and treating childhood obesity: Time to target fathers', International Journal of Obesity, 36 12-15 (2012) [C1]
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2012 |
Battistuzzo CR, Callister RJ, Callister R, Galea MP, 'A systematic review of exercise training to promote locomotor recovery in animal models of spinal cord injury', Journal of Neurotrauma, 29 1600-1613 (2012) [C1]
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2012 |
Baker AL, Callister R, Kelly PJ, Kypri K, ''Do more, smoke less!' Harm reduction in action for smokers with mental health/substance use problems who cannot or will not quit', Drug and Alcohol Review, 31 714-717 (2012) [C3]
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2012 |
Lubans DR, Morgan PJ, Okely AD, Dewar DL, Collins CE, Batterham M, et al., 'Preventing obesity among adolescent girls: One-year outcomes of the nutrition and enjoyable activity for teen girls (NEAT Girls) cluster randomized controlled trial', Archives of Pediatrics & Adolescent Medicine, 166 821-827 (2012) [C1]
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2012 |
Morgan PJ, Collins CE, Plotnikoff RC, Cook AT, Berthon B, Mitchell S, Callister R, 'The impact of a workplace-based weight loss program on work-related outcomes in overweight male shift workers', Journal of Occupational and Environmental Medicine, 54 122-127 (2012) [C1]
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2012 |
Davison G, Callister R, Williamson G, Cooper KA, Gleeson M, 'The effect of acute pre-exercise dark chocolate consumption on plasma antioxidant status, oxidative stress and immunoendocrine responses to prolonged exercise', European Journal of Nutrition, 51 69-79 (2012) [C1]
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Nova |
2012 |
Collins CE, Morgan PJ, Jones P, Fletcher K, Martin JE, Aguiar EJ, et al., 'A 12-week commercial web-based weight-loss program for overweight and obese adults: Randomized controlled trial comparing basic versus enhanced features', Journal of Medical Internet Research, 14 e57 (2012) [C1]
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2012 |
Harries SK, Lubans DR, Callister R, 'Resistance training to improve power and sports performance in adolescent athletes: A systematic review and meta-analysis', Journal of Science and Medicine in Sport, 15 532-540 (2012) [C1]
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Nova |
2012 |
Scott HA, Gibson PG, Garg ML, Pretto JJ, Morgan PJ, Callister R, Wood LG, 'Relationship between body composition, inflammation and lung function in overweight and obese asthma', Respiratory Research, 13 1-10 (2012) [C1]
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2012 |
Young MD, Morgan PJ, Plotnikoff RC, Callister R, Collins CE, 'Effectiveness of male-only weight loss and weight loss maintenance interventions: A systematic review with meta-analysis', Obesity Reviews, 13 393-408 (2012) [C1]
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Nova |
2012 |
Lubans DR, Morgan PJ, Weaver KE, Callister R, Dewar DL, Costigan SA, et al., 'Rationale and study protocol for the Supporting Children's Outcomes Using Rewards, Exercise and Skills (SCORES) group randomized controlled trial: A physical activity and fundamental movement skills intervention for primary schools in low-income communities', BMC Public Health, 12 1-11 (2012) [C3]
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Nova |
2012 |
Reid S, Rivett DA, Katekar MG, Callister R, 'Efficacy of manual therapy treatments for people with cervicogenic dizziness and pain: Protocol of a randomised controlled trial', BMC Musculoskeletal Disorders, 13 201 (2012) [C3]
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Nova |
2012 |
Lubans DR, Morgan PJ, Collins CE, Okely AD, Burrows TL, Callister R, 'Mediators of weight loss in the 'Healthy Dads, Healthy Kids' pilot study for overweight fathers', International Journal of Behavioral Nutrition and Physical Activity, 9 (2012) [C1]
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Nova |
2012 |
Lubans DR, Morgan PJ, Callister R, 'Potential moderators and mediators of intervention effects in an obesity prevention program for adolescent boys from disadvantaged schools', Journal of Science and Medicine in Sport, 15 519-525 (2012) [C1]
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Nova |
2011 |
Morgan PJ, Lubans DR, Plotnikoff RC, Callister R, Burrows TL, Fletcher R, et al., 'The 'Healthy Dads, Healthy Kids' community effectiveness trial: Study protocol of a community-based healthy lifestyle program for fathers and their children', BMC Public Health, 11 876 (2011) [C3]
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Nova |
2011 |
Morgan PJ, Warren JM, Lubans DR, Collins CE, Callister R, 'Engaging men in weight loss: Experiences of men who participated in the male only SHED-IT pilot study', Obesity Research and Clinical Practice, 5 e239-e248 (2011) [C1]
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Nova |
2011 |
Morgan PJ, Lubans DR, Collins CE, Warren JM, Callister R, '12-month outcomes and process evaluation of the SHED-IT RCT: An internet-based weight loss program targeting men', Obesity, 19 142-151 (2011) [C1]
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Nova |
2011 |
Hall LE, Collins CE, Morgan PJ, Burrows TL, Lubans DR, Callister R, 'Children's intake of fruit and selected energy-dense nutrient-poor foods is associated with fathers' intake', Journal of the American Dietetic Association, 111 1039-1044 (2011) [C1]
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Nova |
2011 |
Morgan PJ, Collins CE, Plotnikoff RC, Cook AT, Berthon B, Mitchell S, Callister R, 'Efficacy of a workplace-based weight loss program for overweight male shift workers: The Workplace POWER (Preventing Obesity Without Eating like a Rabbit) randomized controlled trial', Preventive Medicine, 52 317-325 (2011) [C1]
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2011 |
Lubans DR, Morgan PJ, Aguiar EJ, Callister R, 'Randomized controlled trial of the Physical Activity Leaders (PALs) program for adolescent boys from disadvantaged secondary schools', Preventive Medicine, 52 239-246 (2011) [C1]
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2011 |
Lubans DR, Morgan PJ, Callister R, Plotnikoff RC, Eather N, Riley N, Smith CJ, 'Test-retest reliability of a battery of field-based health-related fitness measures for adolescents', Journal of Sports Sciences, 29 685-693 (2011) [C1]
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Nova |
2011 |
Smith CJ, Callister R, Lubans DR, 'A systematic review of strength and conditioning programmes designed to improve fitness characteristics in golfers', Journal of Sports Sciences, 29 933-943 (2011) [C1]
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Nova |
2011 |
Beig MI, Callister R, Saint DA, Bondarenko E, Walker FR, Day TA, Nalivaiko E, 'Voluntary exercise does not affect stress-induced tachycardia, but improves resistance to cardiac arrhythmias in rats', Clinical and Experimental Pharmacology and Physiology, 38 19-26 (2011) [C1]
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2011 |
Morgan PJ, Lubans DR, Callister R, Okely AD, Burrows TL, Fletcher R, Collins CE, 'The 'Healthy Dads, Healthy Kids' randomized controlled trial: Efficacy of a healthy lifestyle program for overweight fathers and their children', International Journal of Obesity, 35 436-447 (2011) [C1]
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2011 |
Morgan PJ, Callister R, 'Effects of a preseason intervention on anthropometric characteristics of semiprofessional rugby league players', Journal of Strength and Conditioning Research, 25 432-440 (2011) [C1]
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2011 |
Adams VJ, Callister R, Mathisen B, 'Using tongue-strengthening exercise programs in dysphagia intervention', Asia Pacific Journal of Speech, Language, and Hearing, 14 139-146 (2011) [C1] |
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2011 |
Collins CE, Morgan PJ, Warren JM, Lubans DR, Callister R, 'Men participating in a weight-loss intervention are able to implement key dietary messages, but not those relating to vegetables or alcohol: the Self-Help, Exercise and Diet using Internet Technology (SHED-IT) study', Public Health Nutrition, 14 168-175 (2011) [C1]
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2010 |
Plunkett BA, Callister R, Watson TA, Garg ML, 'Dietary antioxidant restriction affects the inflammatory response in athletes', British Journal of Nutrition, 103 1179-1184 (2010) [C1]
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Nova |
2010 |
Lubans DR, Sheaman C, Callister R, 'Exercise adherence and intervention effects of two school-based resistance training programs for adolescents', Preventive Medicine, 50 56-62 (2010) [C1]
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Nova |
2010 |
Cox AJ, Pyne DB, Cox GR, Callister R, Gleeson M, 'Influence of chronic dietary carbohydrate supplementation on plasma cytokine responses to exercise', International Journal of Sports Medicine, 31 207-212 (2010) [C1]
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Nova |
2010 |
Cox AJ, Gleeson M, Pyne DB, Saunders PU, Callister R, Fricker PA, 'Respiratory symptoms and inflammatory responses to Difflam throat-spray intervention in half-marathon runners: A randomised controlled trial', British Journal of Sports Medicine, 44 127-133 (2010) [C1]
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Nova |
2010 |
Lubans DR, Morgan PJ, Callister R, Collins CE, Plotnikoff RC, 'Exploring the mechanisms of physical activity and dietary behavior change in the Program X intervention for adolescents', Journal of Adolescent Health, 47 83-91 (2010) [C1]
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Nova |
2010 |
Cox AJ, Gleeson M, Pyne DB, Callister R, Fricker PA, Scott R, 'Cytokine gene polymorphisms and risk for Upper Respiratory Symptoms in highly-trained athletes', Exercise Immunology Review, 16 8-21 (2010) [C1]
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Nova |
2010 |
Collins C, Morgan P, Callister R, Fletcher K, 'Effectiveness of interventions with a dietary component on weight loss maintenance: A systematic review.', JBI Libr Syst Rev, 8 1-18 (2010)
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2010 |
Morton DP, Callister R, 'Influence of posture and body type on the experience of exercise-related transient abdominal pain', Journal of Science and Medicine in Sport, 13 485-488 (2010) [C1]
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Nova |
2010 |
Lubans DR, Aguiar EJ, Callister R, 'The effects of free weights and elastic tubing resistance training on physical self-perception in adolescents', Psychology of Sport and Exercise, 11 497-504 (2010) [C1]
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Nova |
2010 |
Morgan PJ, Collins CE, Plotnikoff RC, McElduff P, Burrows TL, Warren JM, et al., 'The SHED-IT community trial study protocol: A randomised controlled trial of weight loss programs for overweight and obese men', BMC Public Health, 10 1-11 (2010) [C1]
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Nova |
2010 |
Collins CE, Morgan PJ, Jones P, Fletcher K, Martin JE, Aguiar EJ, et al., 'Evaluation of a commercial web-based weight loss and weight loss maintenance program in overweight and obese adults: A randomized controlled trial', BMC Public Health, 10 669 (2010) [C1]
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Nova |
2010 |
Lubans DR, Morgan PJ, Dewar DL, Collins CE, Plotnikoff RC, Okely AD, et al., 'The Nutrition and Enjoyable Activity for Teen Girls (NEAT girls) randomized controlled trial for adolescent girls from disadvantaged secondary schools: Rationale, study protocol, and baseline results', BMC Public Health, 10 652 (2010) [C1]
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Nova |
2009 |
Miller AD, Callister R, 'Reliable lower limb musculoskeletal profiling using easily operated, portable equipment', Physical Therapy in Sport, 10 30-37 (2009) [C1]
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Nova |
2009 |
Lubans DR, Morgan PJ, Collins CE, Warren JM, Callister R, 'Exploring the mechanisms of weight loss in the SHED-IT intervention for overweight men: A mediation analysis', International Journal of Behavioral Nutrition and Physical Activity, 6 Article 76 (2009) [C1]
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Nova |
2009 |
Morgan PJ, Lubans DR, Collins CE, Warren JM, Callister R, 'The SHED-IT Randomized Controlled Trial: Evaluation of an Internet-based weight-loss program for men', Obesity, 17 2025-2032 (2009) [C1]
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Nova |
2009 |
Newman DG, Callister R, 'Flying experience and cardiovascular response to rapid head-up tilt in fighter pilots', Aviation Space and Environmental Medicine, 80 723-726 (2009) [C1]
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Nova |
2009 |
Lubans DR, Morgan PJ, Collins CE, Boreham CA, Callister R, 'The relationship between heart rate intensity and pedometer step counts in adolescents', Journal of Sports Sciences, 27 591-597 (2009) [C1]
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Nova |
2009 |
Richards CE, Magin PJ, Callister R, 'Is your prescription of distance running shoes evidence-based?', British Journal of Sports Medicine, 43 159-162 (2009) [C1]
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Nova |
2009 |
Lubans DR, Morgan PJ, Callister R, Collins CE, 'Effects of integrating pedometers, parental materials, and e-mail support within an extracurricular school sport intervention', Journal of Adolescent Health, 44 176-183 (2009) [C1]
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Nova |
2009 |
Cox AJ, Pyne DB, Gleeson M, Callister R, 'Relationship between C-reactive protein concentration and cytokine responses to exercise in healthy and illness-prone runners', European Journal of Applied Physiology, 107 611-614 (2009) [C1]
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Nova |
2008 |
Cox AJ, Gleeson M, Pyne DB, Callister R, Hopkins WG, Fricker PA, 'Clinical and laboratory evaluation of upper respiratory symptoms in elite athletes', Clinical Journal of Sport Medicine, 18 438-445 (2008) [C1]
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Nova |
2008 |
Reid S, Rivett DA, Katekar MG, Callister R, 'Sustained natural apophyseal glides (SNAGs) are an effective treatment for cervicogenic dizziness', Manual Therapy, 13 357-366 (2008) [C1]
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Nova |
2008 |
Cox AJ, Pyne DB, Gleeson M, Callister R, 'Resting plasma and salivary IL-6 concentrations are not correlated in distance runners', European Journal of Applied Physiology, 103 477-479 (2008) [C1]
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Nova |
2008 |
Morton DP, Callister R, 'EMG activity is not elevated during exercise-related transient abdominal pain', Journal of Science and Medicine in Sport, 11 569-574 (2008) [C1]
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Nova |
2008 |
Newman DG, Callister R, 'Cardiovascular training effects in fighter pilots induced by occupational high G exposure', Aviation Space and Environmental Medicine, 79 774-778 (2008) [C1]
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Nova |
2008 |
Cox AJ, Pyne DB, Cox GR, Callister R, Gleeson M, 'Pre-exercise carbohydrate status influences carbohydrate-mediated attenuation of post-exercise cytokine responses', International Journal of Sports Medicine, 29 1003-1009 (2008) [C1]
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Nova |
2008 |
Lubans DR, Morgan PJ, Callister R, Collins CE, 'The relationship between pedometer step counts and estimated VO2 max as determined by a submaximal fitness test in adolescents', Pediatric Exercise Science, 20 273-284 (2008) [C1]
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Nova |
2007 |
Cox AJ, Pyne DB, Saunders PU, Callister R, Gleeson M, 'Cytokine responses to treadmill running in healthy and illness-prone athletes', Medicine and Science in Sports and Exercise, 39 1918-1926 (2007) [C1]
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2006 |
Callister R, Clancy R, Gleeson M, Cox A, Dorrington M, D'Este C, et al., 'Effect of Lactobacillus acidophilus Probiotic Treatment in Fatigued Athletes with an Interferon- Defect', MEDICINE AND SCIENCE IN SPORTS AND EXERCISE, 38 S30-S30 (2006)
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2006 |
Clancy RL, Gleeson M, Cox A, Callister R, Dorrington M, D'Este CA, et al., 'Reversal in fatigued athletes of a defect in interferon gamma secretion after administration of Lactobacillus acidophilus', British Journal of Sports Medicine, 40 351-354 (2006) [C1]
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2006 |
Morton DP, Callister R, 'Spirometry measurements during an episode of exercise-related transient abdominal pain', International Journal of Sports Physiology and Performance, 1 336-346 (2006) [C1]
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2005 |
Watson TA, Callister R, Taylor RD, Sibbritt DW, MacDonald-Wicks LK, Garg ML, 'Antioxidant Restriction and Oxidative Stress in Short-Duration Exhaustive Exercise', Medicine & science in sports & exercise, 37 63-71 (2005) [C1]
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2005 |
Watson TA, Blake RJ, Callister R, Garg ML, 'Antioxidant-restricted diet reduces plasma nonesterified fatty acids in trained athletes (communication)', Lipids, 40 433-435 (2005) [C3]
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2005 |
Francis JL, Gleeson M, Pyne DB, Callister R, Clancy RL, 'Variation of salivary immunoglobulins in exercising and sedentary populations', Medicine and Science in Sports and Exercise, 37 571-578 (2005) [C1]
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Nova |
2005 |
Watson TA, Blake RJ, Callister R, Garg ML, 'Antioxidant-restricted diet reduces plasma nonesterified fatty acids in trained athletes', Lipids, 40 433-435 (2005) [C1]
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2005 |
Morton DP, Richards D, Callister R, 'Epidemiology of exercise-related transient abdominal pain at the Sydney City to Surf community run', Journal of Science and Medicine in Sport, 8 152-162 (2005) [C1]
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Nova |
2004 |
Gleeson M, Payne D, Callister R, 'The missing links in exercise effects on mucosal immunity', Exercise Immunology Review, 10 107-125 (2004) [C1]
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Nova |
2004 |
Morton DP, Aragon-Vargas L, Callister R, 'Effect of Ingested Fluid Composition on Exercise-related Transient Abdominal Pain', International Journal of Sport Nutrition & Exercise Metabolism, 14 197-208 (2004) [C1]
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2003 |
Gleeson M, Pyne D, Callister R, 'Exercise effects on mucosal immunity and risk of upper respiratory illness', International SportsMed Journal, 4 1-14 (2003) [C1]
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2002 |
Morton DP, Callister R, 'Factors influencing exercise-related transient abdominal pain', Medicine and Science in Sports and Exercise, 34, No 5 745-749 (2002) [C1]
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2000 |
Newman DG, White SW, Callister R, 'The effect of baroreflex adaptation on the dynamic cardiovascualr response to head-up tilt', Aviation, Space, and Environmental Medicine, 71(3) 255-259 (2000) [C1]
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Nova |
2000 |
Morton DP, Callister R, 'Characteristics and etiology of exercise-related transient abdominal pain', Medicine & Science in Sports & Exercise, 32(2) 432-438 (2000) [C1]
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1999 |
Newman DG, Callister R, 'The Non-Invasive Assessment of Stroke Volume and Cardiac Output By Impedance Cardiography: A Review', Aviation, Space, and Enviornmental Medicine, 70: 8 780-789 (1999) [C1]
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1999 |
Newman DG, Callister R, 'Analysis of the Gz Environment During air Combat Maneuvering in the F/A-18 Fighter Aircraft', Aviation, Space, and Environmental Medicine, 70: 4 310-315 (1999) [C1]
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1999 |
Newman DG, White SW, Callister R, 'Patterns of Physical Conditioning in Royal Australian Air Force F/A-18 Pilots and the Implications for +Gz Tolerance', Aviation, Space, and Environmental Medicine, 70: 8 739-744 (1999) [C1]
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Nova |
1998 |
Newman DG, White SW, Callister R, 'Evidence of Baroreflex Adaptation to Repetitive +Gz in Fighter Pilots', Aviation, Space, and Environmental Medicine, 69(5) 446-451 (1998) [C1]
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Nova |
1995 |
Ng AV, Johnson DG, Callister R, Seals DR, 'Muscle sympathetic nerve activity during postural change in healthy young and older adults', Clinical Autonomic Research, 5 57-60 (1995)
Recent evidence suggests that during orthostatic stress the reflex increase in muscle sympathetic nerve activity may be diminished in older adults. To test this hypothesis, we mea... [more]
Recent evidence suggests that during orthostatic stress the reflex increase in muscle sympathetic nerve activity may be diminished in older adults. To test this hypothesis, we measured muscle sympathetic nerve activity, plasma noradrenaline concentrations, heart rate, and arterial blood pressure in twelve young (mean, 25 years; range, 19-29 years) adults and 14 older (mean 64 years; range, 60-74 years) healthy adults, while supine and during upright sitting. Supine control levels of muscle sympathetic nerve activity were higher in the older subjects (35 ± 1 vs. 25 ± 1 bursts/min, p < 0.05), but there were no differences in plasma noradrenaline concentrations, heart rate or arterial pressure. Despite higher supine control levels in the older group, the absolute unit increases in muscle sympathetic nerve activity in response to upright sitting (p < 0.05 vs. control) were not different in the two groups (7 ± 1 vs. 7 ± 1 bursts/min), nor were the increases in plasma noradrenaline concentrations. Heart rate did not increase above supine control in response to sitting in either group. Arterial pressure increased slightly (p < 0.05, supine vs. control), but there were no age-related differences. These results indicate that, contrary to recent findings, the reflex increases in muscle sympathetic nerve activity and plasma noradrenaline concentrations and regulation of arterial pressure during this natural orthostatic stress are well preserved in older healthy men and women. © 1995 Rapid Communications of Oxford Ltd.
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1994 |
Ng AV, Callister R, Johnson DG, Seals DR, 'Sympathetic neural reactivity to stress does not increase with age in healthy humans.', The American journal of physiology, 267 H344-H353 (1994)
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1994 |
Jasperse JL, Seals DR, Callister R, 'Active forearm blood flow adjustments to handgrip exercise in young and older healthy men.', The Journal of Physiology, 474 353-360 (1994)
1. Our purpose was to test the hypothesis that ageing impairs the active muscle hyperaemia consequent to dynamic exercise in humans. 2. Eleven young (19-29 years) and eleven older... [more]
1. Our purpose was to test the hypothesis that ageing impairs the active muscle hyperaemia consequent to dynamic exercise in humans. 2. Eleven young (19-29 years) and eleven older (60-74 years) healthy, non-obese men with similar chronic physical activity levels and forearm size performed two protocols of dynamic handgrip exercise: (a) brief (1 min), incremental loads to exhaustion, and (b) sustained (8 min), submaximal loads. Active forearm blood flow (FBF) was measured at rest and during a brief period of relaxation at the end of each minute of exercise. Arterial blood pressure was recorded to calculate active forearm vascular conductance (FVC). Sustained forearm ischaemia plus handgrip was used to elicit a peak forearm vasodilatatory response. 3. There were no differences in pre-exercise levels of any variable between the young and older men. During exercise, ratings of perceived effort, the peak workload attained, and the ability to sustain submaximal workloads were all similar for the two groups. 4. During brief exercise, both submaximal and peak levels of FBF were similar in the two groups; however, the peak increases in FVC were greater in the older men. During sustained exercise, FBF and FVC were not different in the two groups at the lowest loads, but the increases became relatively greater in the older men with increasing workloads. 5. Peak levels of FBF and FVC in response to the peak vasodilatatory stimulus were similar in the young and older men. 6. These findings fail to support the postulate that ageing results in impaired active muscle hyperaemia and vasodilatation during small-muscle dynamic exercise.(ABSTRACT TRUNCATED AT 250 WORDS) © 1994 The Physiological Society
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1994 |
Ng AV, Callister R, Johnson DG, Seals DR, 'Sympathetic neural reactivity to stress does not increase with age in healthy humans', American Journal of Physiology - Heart and Circulatory Physiology, 267 (1994)
Sympathetic nervous system reactivity to stress is thought to increase with age in humans. We tested this hypothesis by recording postganglionic sympathetic nerve activity to skel... [more]
Sympathetic nervous system reactivity to stress is thought to increase with age in humans. We tested this hypothesis by recording postganglionic sympathetic nerve activity to skeletal muscle (MSNA) (peroneal microneurography) and by measuring plasma norepinephrine concentrations (PNE), heart rate, and arterial pressure before (prestress control) and during cognitive challenge (mental arithmetic and colored word test), thermal stress (i.e., the cold pressor test), and exhaustive isometric handgrip exercise (40% of maximum voluntary force)/postexercise ischemia in 15 older (60-74 yr, mean ± SE = 64. ± 1) and 15 young (19-30 yr, mean ± SE = 25 ± 1) healthy men and women (8 males, 7 females each). The initial prestress control level of MSNA was higher in the older subjects (P < 0.01 vs. young), but there were no significant differences for PNE, heart rate, or arterial pressure. The MSNA and PNE responses to mental stress were small and not different in the two groups. MSNA and PNE increased markedly in response to the cold pressor test and isometric handgrip exercise/post exercise ischemia in both groups. The absolute unit increases in MSNA were similar in the two groups, but the relative (percentage) increases were actually smaller in the older subjects (P < 0.05 vs. young) due to their elevated baseline levels. The stress-evoked increases in arterial pressure were similar in the groups, but the older subjects tended to demonstrate smaller increases in heart rate. In general, no gender differences were noted in either age group. These findings fail to support the long-held concept that stress-induced sympathetic nervous system stimulation becomes exaggerated with age. Thus, sympathetic neural hyperreactivity does not appear to be a fundamental property of the aging process in humans.
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1994 |
Ng AV, Callister R, Johnson DG, Seals DR, 'Endurance exercise training is associated with elevated basal sympathetic nerve activity in healthy older humans', Journal of Applied Physiology, 77 1366-1374 (1994)
We tested the hypothesis that endurance training is associated with altered basal levels of muscle sympathetic nerve activity (MSNA) and responses to acute stress in healthy older... [more]
We tested the hypothesis that endurance training is associated with altered basal levels of muscle sympathetic nerve activity (MSNA) and responses to acute stress in healthy older adults. MSNA (peroneal microneurography) and plasma norepinephrine (NE) concentrations were measured during supine rest, a cold pressor test, and isometric handgrip (40% maximal voluntary force to exhaustion) in 16 older masters endurance athletes [10 men, 6 women; 66 ± 1 (SE) yr] and 15 healthy normotensive untrained control subjects (9 men, 6 women; 65 ± 1 yr). The athletes had higher levels of estimated daily energy expenditure and maximal oxygen uptake and lower levels of resting heart rate and body fat than the control subjects (all P < 0.05). MSNA during supine rest was elevated in the athletes whether expressed as burst frequency (43 ± 2 vs. 32 ± 3 bursts/min, respectively; P < 0.05) or burst incidence (75 ± 4 vs. 52 ± 5 bursts/100 heartbeats, respectively; P < 0.01). These whole group differences were due primarily to markedly higher levels of MSNA in the athletic vs. untrained women (48 ± 4 vs. 25 ± 3 bursts/min, 82 ± 3 vs. 38 ± 3 bursts/100 heartbeats, respectively, P < 0.001). In contrast, basal plasma NE concentrations were not significantly different in the athletes vs. control subjects. The MSNA and plasma NE responses to acute stress tended to be greater in the athletes. These findings indicate that vigorous regular aerobic exercise is associated with an elevated level of MSNA at rest and a tendency for an enhanced response to acute stress in healthy normotensive older humans.
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1994 |
CALLISTER R, NG AV, SEALS DR, 'ARM MUSCLE SYMPATHETIC-NERVE ACTIVITY DURING PREPARATION FOR AND INITIATION OF LEG-CYCLING EXERCISE IN HUMANS', JOURNAL OF APPLIED PHYSIOLOGY, 77 1403-1410 (1994)
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1993 |
Loucks AB, Callister R, 'Induction and prevention of low-T3 syndrome in exercising women.', The American journal of physiology, 264 R924-R930 (1993)
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1993 |
Loucks AB, Callister R, 'Induction and prevention of low-T
To investigate the influence of exercise on thyroid metabolism, 46 healthy young regularly menstruating sedentary women were randomly assigned to a 3 x 2 experimental design of ae... [more]
To investigate the influence of exercise on thyroid metabolism, 46 healthy young regularly menstruating sedentary women were randomly assigned to a 3 x 2 experimental design of aerobic exercise and energy availability treatments. Energy availability was defined as dietary energy intake minus energy expenditure during exercise. After 4 days of treatments, low energy availability (8 vs. 30 kcal·kg body wt-1·day-1) had reduced 3,5,3'- triiodothyronine (T3) by 15% and free T3 (fT3) by 18% and had increased thyroxine (T4) by 7% and reverse T3 (rT3) by 24% (all P < 0.01), whereas free T4 (fT4) was unchanged (P = 0.08). Exercise quantity (0 vs. 1,300 kcal/day) and intensity (40 vs. 70% of aerobic capacity) did not affect any thyroid hormone (all P > 0.10). That is, low-T3 syndrome was induced by the energy cost of exercise and was prevented in exercising women by increasing dietary energy intake. Selective observation of low-T3 syndrome in amenorrheic and not in regularly menstruating athletes suggests that exercise may compromise the availability of energy for reproductive function in humans. If so, athletic amenorrhea might be prevented or reversed through dietary reform without reducing exercise quantity or intensity.
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1993 |
Ng AV, Callister R, Johnson DG, Seals DR, 'Age and gender influence muscle sympathetic nerve activity at rest in healthy humans', Hypertension, 21 498-503 (1993)
Muscle sympathetic nerve activity at rest increases with age in humans. The respective influences of the aging process per se and gender on this increase and whether age and gende... [more]
Muscle sympathetic nerve activity at rest increases with age in humans. The respective influences of the aging process per se and gender on this increase and whether age and gender effects on muscle sympathetic nerve activity can be identified with plasma norepinephrine concentrations, however, have not been established. To examine these issues, nine young women (aged 24±1 years; mean±SEM), eight young men (aged 26±1 years), seven older women (aged 63±1 years), and eight older men (aged 66±1 years) were studied. All were healthy, normotensive (blood pressure <140/90 mm Hg), nonobese (<20% above ideal weight), unmedicated, nonsmokers engaged in minimal to recreational levels of chronic physical activity. Arterial blood pressure (manual sphygmomanometry, brachial artery), heart rate, muscle sympathetic nerve activity (peroneal microneurography), and antecubital venous plasma norepinephrine concentrations (radioenzymatic assay) were determined during quiet supine resting conditions. Body weight was higher in men, but there were no age-related differences, whereas estimated body fat (sum of skinfolds) was higher in women and in the older groups (p<0.05). Estimated daily energy expenditure, arterial blood pressure, and heart rate were not different among the groups. Both muscle sympathetic nerve activity burst frequency and burst incidence at rest were progressively higher in the young women, young men, older women, and older men (10±1 versus 18±2 versus 25±3 versus 39±5 bursts/min and 16±1 versus 30±4 versus 40±3 versus 61±6 bursts/100 heartbeats, respectively; all p<0.05 versus each other). In contrast, average levels of plasma norepinephrine concentrations were not different among the groups. There was, however, a positive relation between plasma norepinephrine concentrations and muscle sympathetic nerve activity (r=0.65; p<0.0003) when the individual data were pooled. There were no strong or consistent associations between muscle sympathetic nerve activity and any other variable. We conclude that the rise in muscle sympathetic nerve activity with aging in resting humans appears to be independent of age-related differences in ischemic heart disease, obesity, chronic physical activity, or arterial blood pressure, and thus is likely related to some factor associated with the aging process per se. Gender, however, appears to be an important determinant of muscle sympathetic nerve activity at rest in both young and older humans. Finally, the age- and gender-specific influences on muscle sympathetic nerve activity are not necessarily reflected by plasma norepinephrine concentrations.
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1992 |
CALLISTER RJ, CALLISTER R, PETERSON EH, 'DESIGN AND CONTROL OF THE HEAD RETRACTOR MUSCLE IN A TURTLE, PSEUDEMYS-(TRACHEMYS)-SCRIPTA .1. ARCHITECTURE AND HISTOCHEMISTRY OF SINGLE MUSCLE-FIBERS', JOURNAL OF COMPARATIVE NEUROLOGY, 325 405-421 (1992)
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1992 |
Kregel KC, Seals DR, Callister R, 'Sympathetic nervous system activity during skin cooling in humans: relationship to stimulus intensity and pain sensation.', The Journal of Physiology, 454 359-371 (1992)
1. Our aim was to determine the relationship between efferent sympathetic nervous system activity to skeletal muscle (MSNA) and both the dynamics of the stimulus and pain sensatio... [more]
1. Our aim was to determine the relationship between efferent sympathetic nervous system activity to skeletal muscle (MSNA) and both the dynamics of the stimulus and pain sensation during localized skin cooling in humans. MSNA in the lower leg (peroneal microneurography), heart rate, arterial blood pressure, hand skin and muscle temperatures and perceptions of pain were recorded in ten healthy subjects before, during and after immersion (3 min) of a hand in water of different temperatures ranging from non-noxious to extremely noxious (28, 21, 14, 7 and 0 degrees C). 2. Immersion produced an abrupt, water temperature-dependent fall in hand skin temperature (initial 30 s) followed by a more gradual decline. In contrast, the fall in hand muscle temperature was almost linear during immersion. Throughout immersions at the 28, 21, and 14 degrees C water temperatures and during the initial phase of the 7 degrees C level, sensations ranged from not painful to somewhat painful; however, the latter phase of the 7 degrees C immersion and the entire 0 degrees C level were perceived as intensely painful. 3. During the initial 15-30 s of immersion at the 21-7 degrees C water temperatures, MSNA decreased from control levels in all subjects (47-58% on average, P < 0.05), whereas mean arterial blood pressure did not change. MSNA then returned to and remained at control levels throughout the 28-14 degrees C immersions, although arterial pressure, primarily systolic, rose slightly. 4. After some delay, MSNA increased during immersion at both the 7 degrees C (P < 0.05 at 90 s) and 0 degrees C (P < 0.05 at 60 s) levels in a progressive, water temperature-dependent manner, achieving peak values of approximately 200 and 300% of control, respectively, by 2.0-2.5 min. These elevations in MSNA were associated with parallel increases in arterial pressure. 5. Heart rate rose during the onset of immersion at all water temperatures (P < 0.05), but fell rapidly to control levels after 60-90 s. The increases were small (approximately 5 beats/min) and similar at the 28-7 degrees C levels, but were twice as great at the coldest water temperature.(ABSTRACT TRUNCATED AT 400 WORDS) © 1992 The Physiological Society
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1992 |
Callister R, Suwarno NO, Seals DR, 'Sympathetic activity is influenced by task difficulty and stress perception during mental challenge in humans.', The Journal of Physiology, 454 373-387 (1992)
1. Our aim was to determine the influence of the type of task, the absolute and relative difficulty of the task, and the perceived stress associated with performance of the task o... [more]
1. Our aim was to determine the influence of the type of task, the absolute and relative difficulty of the task, and the perceived stress associated with performance of the task on sympathetic circulatory regulation during cognitive challenge in humans. 2. Sympathetic nerve activity to skeletal muscle (MSNA) determined from peroneal microneurography, heart rate and arterial blood pressure were recorded continuously in twelve subjects during a modified Stroop colour word test (CWT) and mental arithmetic (MA), each performed over six levels of increasing absolute task difficulty. Performance (percentage correct) on each task was assessed and ratings of perceived stress obtained. Responses to CWT and MA were compared at similar levels of performance and perceived stress. 3. MSNA decreased at task onset, remained below baseline levels at low levels of difficulty which were not perceived as stressful, increased above baseline levels at higher levels of difficulty which were perceived as stressful, and increased further during recovery. Thus, the regulation of MSNA was stress dependent. At similar levels of stress perception there were no differences in MSNA between CWT and MA. Although performance declined as task difficulty increased, there was no particular ¿threshold¿ level of performance associated with the stimulation of MSNA. 4. Arterial pressure and heart rate were elevated above baseline levels throughout the mental tasks. Arterial pressure increased over the first 3-4 levels of each task and then plateaued whereas heart rate did not vary across increasing levels of task difficulty. Heart rate and arterial pressure responses to CWT were higher than those to MA. 5. These data demonstrate that during cognitive challenge the stimulation of MSNA is governed primarily by perceived stress which is dependent, in part, on the absolute level of task difficulty. In contrast, neither performance nor the type of cognitive task appear to be important determinants of MSNA. Arterial pressure is influenced by the task and level of difficulty. Heart rate is independent of task difficulty but may be task dependent. © 1992 The Physiological Society
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1992 |
Shealy MJ, Callister R, Dudley GA, Fleck SJ, 'Human torque velocity adaptations to sprint, endurance, or combined modes of training', American Journal of Sports Medicine, 20 581-586 (1992)
We had groups of athletes perform sprint and endurance run training independently or concurrently for 8 weeks to examine the voluntary in vivo mechanical responses to each type of... [more]
We had groups of athletes perform sprint and endurance run training independently or concurrently for 8 weeks to examine the voluntary in vivo mechanical responses to each type of training. Pre- and posttraining angle- specific peak torque during knee extension and flexion were determined at 0, 0.84, 1.65, 2.51, 3.35, 4.19, and 5.03 radian · sec-1 and normalized for lean body mass. Knee extension torque in the sprint-trained group increased across all test velocities, the endurance-trained group increased at 2.51, 3.34, 4.19, and 5.03 radian · sec-1, and the group performing the combined training showed no change at any velocity. Knee flexion torque of the sprint and combined groups decreased at 0.84, 1.65, and 2.51 radian · sec-1. Knee flexion torque in the sprint-trained group also decreased at 0 radian · sec-1 and in the combined group at 3.34 radian · sec-1. Knee flexion torque in the endurance-trained group showed no change at any velocity of contraction. Mean knee flexion:extension ratios across the test velocities significantly decreased in the sprint-trained group. Knee extension endurance during 30 seconds of maximal contractions significantly increased in all groups. Only the sprint-trained group showed a significant increase in endurance of the knee flexors. These data suggest that changes in the voluntary in vivo mechanical characteristics of knee extensor and flexor skeletal muscles are specific to the type of run training performed.
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1991 |
CALLISTER R, CALLISTER RJ, STARON RS, FLECK SJ, TESCH P, DUDLEY GA, 'PHYSIOLOGICAL-CHARACTERISTICS OF ELITE JUDO ATHLETES', INTERNATIONAL JOURNAL OF SPORTS MEDICINE, 12 196-203 (1991)
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1990 |
CALLISTER R, CALLISTER RJ, FLECK SJ, DUDLEY GA, 'PHYSIOLOGICAL AND PERFORMANCE RESPONSES TO OVERTRAINING IN ELITE JUDO ATHLETES', MEDICINE AND SCIENCE IN SPORTS AND EXERCISE, 22 816-824 (1990)
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1990 |
Murphy SM, Fleck SJ, Dudley G, Callister R, 'Psychological and performance concomitants of increased volume training in elite athletes', Journal of Applied Sport Psychology, 2 34-50 (1990)
Fifteen athletes, eight males and seven females, from the sport of judo served as subjects in a study investigating the effects of increased training loads on various psychologica... [more]
Fifteen athletes, eight males and seven females, from the sport of judo served as subjects in a study investigating the effects of increased training loads on various psychological characteristics. Subjects were monitored over a ten week period. Three phases of training were employed: baseline, increased conditioning training volume, and increased sport specific training volume. Psychological instruments administered at weeks 2, 4, 8, and 10 assesssed a variety of variables in the areas of mood state, competitive anxiety, sport specific psychological skills, clinical disorder signs, and perceptions of training. Physical performance measures were also assessed to monitor speed, strength, and aerobic and anaerobic endurance. Results indicated that athletes were significantly angrier at week 10 than at baseline, showed a significant increase in fatigue at week 8 compared to baseline, and rated their perceived effort highest at week 8. Significant changes during the training period were also noted on the variables of general anxiety, somatic competitive anxiety, and competitive self-confidence, as well as subjective ratings of amount of effort expended and closeness to peak performance. Performance measures indicated a decrease in both anaerobic endurance and strength by the end of week 10. Results are discussed with regard to implications for training in elite athlete populations. © 1990 by Associalion for Advancement of Applied Spon Psychology.
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1989 |
CALLISTER RJ, CALLISTER R, PETERSON EH, 'HISTOCHEMICAL CLASSIFICATION OF NECK AND LIMB MUSCLE-FIBERS IN A TURTLE, PSEUDEMYS-SCRIPTA, A STUDY USING MICROPHOTOMETRY AND CLUSTER-ANALYSIS TECHNIQUES', JOURNAL OF MORPHOLOGY, 199 269-286 (1989)
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1989 |
Kraemer WJ, Fleck SJ, Callister R, Shealy M, Dudley GA, Maresh CM, et al., 'Training responses of plasma beta-endorphin, adrenocorticotropin, and cortisol', Medicine and Science in Sports and Exercise, 21 146-153 (1989)
The purpose of this study was to examine the effects of three different run training programs on plasma responses of beta-endorphin (ß-EP), adrenocorticotropin (ACTH), and cortiso... [more]
The purpose of this study was to examine the effects of three different run training programs on plasma responses of beta-endorphin (ß-EP), adrenocorticotropin (ACTH), and cortisol to maximal treadmill exercise. Subjects were randomly assigned to one of three training groups: sprint intervals (SI) (N = 8), endurance (E) (N = 10), or combination (C) (N= 7). Training was monitored for 10 wk, and maximal treadmill exercise tests were administered pre-training and after 2, 4, 6, 8, and 10 wk of training. Blood samples were obtained (pre-training and after 10 wk) before, immediately after, and 5 and 15 min following the maximal exercise tests. All groups significantly (P < 0.05) increased maximal oxygen consumption values at 8 and 10 wk of the training period. Significant exercise-induced increase in plasma ß-EP, ACTH, cortisol, and blood lactate were observed for both pre- and post-training tests in all training groups. The SI group demonstrated significant post-training increases in ß-EP, ACTH, cortisol, and 5 min post-exercise blood lactate concentrations in response to maximal exercise. No training-induced hormonal changes were observed for the E group. While exercise-induced increases were observed, the C group exhibited significant post-training reductions in plasma responses of ß-EP, ACTH, and blood lactate concentrations in response to maximal exercise. Still, resting and post-exercise increases in plasma cortisol concentrations were significantly higher in magnitude in the post-training test. Lactate was significantly correlated with ß-EP (r = 0.72), ACTH (r = 0.70), and cortisol (r = 0.64). These data suggest that different run training programs produce differential effects on plasma ß-EP, ACTH, and cortisol in response to maximal exercise and that these responses may be linked to anaerobic metabolic factors. © 1989 by the American College of Sports Medicine.
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1988 |
Callister R, Shealy MJ, Fleck SJ, Dudley GA, 'Performance adaptations to sprint, endurance and both modes of training', Journal of Strength and Conditioning Research, 2 46-51 (1988)
Sprint (S, n=12) and endurance (E, n=14) training were performed independently and concurrently (C, n=6) for eight weeks to determine adaptive responses to each and their capabili... [more]
Sprint (S, n=12) and endurance (E, n=14) training were performed independently and concurrently (C, n=6) for eight weeks to determine adaptive responses to each and their capability. Group S trained three days per week performing six 100m and six 50m sprints at 95 percent maximum speed. Group E ran continuously for 30 minutes at 85 percent HRmax three days per week. Group C trained six days per week, alternating days of sprint and endurance training. Group S improved (p<0.05) 50m and 100m sprint times (2.5 and 4.5 percent, respectively), 30-second run distance (2.5 percent), showed no change (p>0.05) in 30-minute run distance or (Formula Presented)VO2 max, and decreased (p<0.05) average power output 20.9 percent during the 30- to 45-second interval of a 60-second continuous jump test (CJT). Group E improved (p<0.05) 30- minute run distance (12.6 percent), V02 max (5.9 percent), and sprint performance (2.2 percent in 50m, 2.5 percent in 100m), but showed no change (p>0.05) in 30-second run distance. Group C showed (p<0.05) improvements of similar magnitude to group E in V02 max (1.5 percent) and 30-minute run distance (9.9 percent), and to Group S in 50m (2.4 percent) and 100m (3.5 percent) times and 30-second run distance (3.5 percent). All groups decreased (p<0.05) average power output during the 45- to 60-second interval of the 60-second CJT. Our results suggest that optimum improvements in performance are specific to the mode of training (sprint or endurance) and are independent of concurrent performance of both modes of exercise. © 1988 Journal of Applied Sport Science Research. All rights reserved.
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1986 |
CALLISTER RJ, CALLISTER R, PETERSON EH, 'FIBER TOPOGRAPHY IN A DUALLY INNERVATED NECK MUSCLE', AMERICAN ZOOLOGIST, 26 A82-A82 (1986)
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