A systematic review of baseline psychosocial characterisation in dietary randomised controlled trials for weight loss
Somerset, S.M., Markwell, K., & Al-Foraih, M. (2013) A systematic review of baseline psychosocial characterisation in dietary randomised controlled trials for weight loss. European Journal of Clinical Nutrition, 67(7), pp. 697-702.
To investigate the extent of baseline psychosocial characterisation of subjects in published dietary randomised controlled trials (RCTs) for weight loss.
Systematic review of adequately sized (nX10) RCTs comprising X1 diet-alone arm for weight loss were included for this systematic review. More specifically, trials included overweight (body mass index 425 kg/m2) adults, were of duration X8 weeks and had body weight as the primary outcome. Exclusion criteria included specific psychological intervention (for example, Cognitive Behaviour Therapy (CBT)), use of web-based tools, use of supplements, liquid diets, replacement meals and very-low calorie diets. Physical activity intervention was restricted to general exercise only (not supervised or prescribed, for example, VO2 maximum level).
Of 176 weight-loss RCTs published during 2008–2010, 15 met selection criteria and were assessed for reported psychological characterisation of subjects. All studies reported standard characterisation of clinical and biochemical characteristics of subjects. Eleven studies reported no psychological attributes of subjects (three of these did exclude those taking psychoactive medication). Three studies collected data on particular aspects of psychology related to specific research objectives (figure scale rating, satiety and quality-of-life). Only one study provided a comprehensive background on psychological attributes of subjects.
Better characterisation in behaviour-change interventions will reduce potential confounding and enhance generalisability of such studies.
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|Item Type:||Journal Article|
|Keywords:||diet, weight loss, randomised controlled trial, psychological factors|
|Subjects:||Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > NUTRITION AND DIETETICS (111100)|
|Divisions:||Current > QUT Faculties and Divisions > Faculty of Health
Current > Institutes > Institute of Health and Biomedical Innovation
Current > Schools > School of Public Health & Social Work
|Copyright Owner:||Copyright 2013 Nature Publishing Group|
|Deposited On:||30 Sep 2013 23:02|
|Last Modified:||01 Oct 2013 21:13|
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