James J Annesi1, Ping H Johnson. 1. YMCA of Metro Atlanta, 100 Edgewood Avenue NE, Suite 1100, Atlanta, GA, 30303, USA, jamesa@ymcaatlanta.org.
Abstract
PURPOSE: To improve success rates of behavioral weight-loss treatments, a better understanding of psychosocial factors that discriminate between weight-loss success and failure is required. The inclusion of cognitive-behavioral methods and manageable amounts of exercise might induce greater improvements than traditional methods of education in healthy eating practices. METHODS:Women with morbid obesity [body mass index (BMI) ≥40 kg/m(2)] were recruited for a treatment of supported exercise paired with either a cognitive-behavioral or an educational approach to eating change over 6 months. They were classified as either successful with (i.e., at least 5 % loss; n = 40) or failed at (no loss, or weight gain; n = 43) weight loss. Discriminate function analysis incorporated theory-based models of 1 (self-efficacy), 5 (self-efficacy, self-regulation, mood, physical self-concept, body satisfaction), and 3 (self-efficacy, self-regulation, mood) psychosocial predictors at both month 6, and change from baseline-month 6. RESULTS: All three models significantly discriminated weight-loss success/failure (66, 88, and 87 % for success; and 81, 87, and 88 % for failure, respectively). Self-regulation had the strongest correlations within the multi-predictor models (0.90-0.96), and all variables entered were above the standard of 0.30 set for relevance. Participants in the cognitive-behavioral nutrition group demonstrated significantly greater improvements in all psychosocial variables and success with weight loss. Completing at least two sessions of exercise per week predicted success/failure with weight loss better than overall volume of exercise. CONCLUSIONS: New and relevant findings regarding treatment-induced psychosocial changes might be useful in the architecture of more successful behavioral weight-loss interventions.
RCT Entities:
PURPOSE: To improve success rates of behavioral weight-loss treatments, a better understanding of psychosocial factors that discriminate between weight-loss success and failure is required. The inclusion of cognitive-behavioral methods and manageable amounts of exercise might induce greater improvements than traditional methods of education in healthy eating practices. METHODS:Women with morbid obesity [body mass index (BMI) ≥40 kg/m(2)] were recruited for a treatment of supported exercise paired with either a cognitive-behavioral or an educational approach to eating change over 6 months. They were classified as either successful with (i.e., at least 5 % loss; n = 40) or failed at (no loss, or weight gain; n = 43) weight loss. Discriminate function analysis incorporated theory-based models of 1 (self-efficacy), 5 (self-efficacy, self-regulation, mood, physical self-concept, body satisfaction), and 3 (self-efficacy, self-regulation, mood) psychosocial predictors at both month 6, and change from baseline-month 6. RESULTS: All three models significantly discriminated weight-loss success/failure (66, 88, and 87 % for success; and 81, 87, and 88 % for failure, respectively). Self-regulation had the strongest correlations within the multi-predictor models (0.90-0.96), and all variables entered were above the standard of 0.30 set for relevance. Participants in the cognitive-behavioral nutrition group demonstrated significantly greater improvements in all psychosocial variables and success with weight loss. Completing at least two sessions of exercise per week predicted success/failure with weight loss better than overall volume of exercise. CONCLUSIONS: New and relevant findings regarding treatment-induced psychosocial changes might be useful in the architecture of more successful behavioral weight-loss interventions.
Authors: Andrea L Dunn; Madhukar H Trivedi; James B Kampert; Camillia G Clark; Heather O Chambliss Journal: Am J Prev Med Date: 2005-01 Impact factor: 5.043
Authors: Laura P Svetkey; Victor J Stevens; Phillip J Brantley; Lawrence J Appel; Jack F Hollis; Catherine M Loria; William M Vollmer; Christina M Gullion; Kristine Funk; Patti Smith; Carmen Samuel-Hodge; Valerie Myers; Lillian F Lien; Daniel Laferriere; Betty Kennedy; Gerald J Jerome; Fran Heinith; David W Harsha; Pamela Evans; Thomas P Erlinger; Arline T Dalcin; Janelle Coughlin; Jeanne Charleston; Catherine M Champagne; Alan Bauck; Jamy D Ard; Kathleen Aicher Journal: JAMA Date: 2008-03-12 Impact factor: 56.272