Effect of a non-dieting lifestyle randomised control trial on psychological well-being and weight management in morbidly obese pre-menopausal women

Borkoles, E, Carroll, S, Clough, P and Polman, RCJ (2015) Effect of a non-dieting lifestyle randomised control trial on psychological well-being and weight management in morbidly obese pre-menopausal women. Maturitas, 83. ISSN 0378-5122

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Abstract

tObjective: This study examined the effects of a non-dieting lifestyle intervention approach for morbidlyobese women designed in the framework of the self-determination theory (SDT) and Health at Every Sizeon weight maintenance and psychological functioning.Participants and design: Predominantly white (97%), morbidly obese (BMI ≥ 35 kg m−2with at least oneco-morbid condition or a BMI ≥ 40 kg m−2) pre-menopausal women (N = 62), aged between 24 and 55years were initially randomly assigned to 12 weeks of lifestyle intervention (IIG) or delayed start controlgroup (DSCG). The program consisted of 3 months intensive lifestyle intervention followed by 9 monthmaintenance phase. The DSCG group commenced the program after 3 months.Results and conclusions: Initially, the IIG showed a significant decrease in body weight (baseline to end ofthe RCT phase) compared with a significant increase in the DSCG group. However, no significant changes inweight status were evident in either group at 12 months compared with baseline. The 3-month intensiveintervention resulted in significantly improved psychological functioning in both groups, which weremaintained at 12 months. The study provides additional support for a non-dieting, theory-based, lifestyleapproach to weight management and psychological well-being among morbidly obese females.