Behavioural and psychological pretreatment predictors of short- and long-term weight loss among women with overweight and obesity

• Type: Article in International Scientific Journal
• Date: 2020

Authors

Jorge, R (Author) Other; Santos, I (Author) Other; Tomas, R (Author) Other; Silva, MN (Author) Other; Carraca, EV (Author) Other; Teixeira, Vitor Hugo (Author) FCNAUP; Teixeira, PJ (Author) Other

Journal

Title: Eating and Weight Disorders: Studies on Anorexia Bulimia and Obesity

Vol. 25

Pages: 1377-1385

ISSN: 1124-4909

Publisher: Palgrave Macmillan

Indexing

ISI Web of Knowledge - 4 Citations

Scopus - 4 Citations

Scientific classification

FOS: Medical and Health sciences

CORDIS: Health sciences

Other information

Authenticus ID: P-00R-TCJ

DOI: 10.1007/s40519-019-00775-9

Abstract (EN): Purpose This study aims at identifying behavioural and psychological pretreatment predictors of 12- and 36-month weight loss in women with overweight/obesity enrolled in a behavioural weight management intervention. Methods A sample of 221 women participated in a randomized controlled trial on weight management (n(12 month) = 184;n(36 month) = 156). Multiple linear regressions were used to identify pretreatment predictors of successful weight loss, separately for intervention and control groups. Completers-only and baseline observation carried forward analyses were performed. This study is a secondary analysis of data from the 'Promotion of Exercise and Health in Obesity' randomized controlled trial. Results Fewer weight loss attempts in the last year positively predicted weight loss at 12 months in the intervention group, explaining 6% of the variance. At 36 months, in the intervention group, 20.2% of the variance in weight change was explained by lower eating disinhibition and higher weight-related quality of life in completers-only analyses, while baseline observation carried forward analyses explained only 9.8% of the variance in weight change via higher self-esteem and lower weight loss expectations. In the control group, higher exercise self-efficacy and a more internal weight locus of control predicted weight loss at 36 months, explaining 13.9% of the variance (completers-only analyses). Conclusions Previous weight loss attempts were identified as the most efficient pretreatment predictor of 12-month weight loss. Eating disinhibition, weight-related quality of life, self-esteem, weight loss expectations, exercise self-efficacy, and weight locus of control seem to be key factors for long-term success.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 9