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Physical Activity Intentions and Behavior Mediate Treatment Response in an Acceptance-Based Weight Loss Intervention
Journal article   Open access   Peer reviewed

Physical Activity Intentions and Behavior Mediate Treatment Response in an Acceptance-Based Weight Loss Intervention

Kathryn M. Godfrey, Leah M. Schumacher, Meghan L. Butryn and Evan M. Forman
Annals of behavioral medicine, v 53(12), pp 1009-1019
01 Dec 2019
DOI: https://doi.org/10.1093/abm/kaz011
PMID: 30951589
Featured in Collection :   UN Sustainable Development Goals @ Drexel
url
https://doi.org/10.1093/abm/kaz011View
Published, Version of Record (VoR)Open Access (License Unspecified),  Open

Abstract

Psychology Psychology, Multidisciplinary Social Sciences
Background Acceptance-based treatment (ABT) for weight loss has shown promise for improving outcomes relative to standard behavioral treatment (SBT). One way in which ABT may improve outcomes is through increasing physical activity (PA) intentions and behavior but little research has examined these as mediators of ABT on weight change. Purpose This study sought to examine ABT's effects on intentions for PA and several objectively measured PA variables during treatment and analyze PA intentions and behaviors as mediators of ABT's effect on weight loss. Methods Participants (N = 189) with overweight/obesity randomized to 1 year of either ABT or SBT completed ecological momentary assessment of PA intentions, accelerometer-based PA assessment, and had weight measured at baseline, mid-treatment, and end of treatment. Results ABT had a significantly higher increase than SBT in PA intention minutes at mid-treatment and end of treatment (p < 0.001), and both groups had nonlinear increases in moderate-to-vigorous physical activity (MVPA) that were not significantly different. Sequential mediation models found that ABT's effect on weight loss was partially mediated by higher PA intention minutes at mid-treatment leading to increased MVPA minutes per week. Increased MVPA minutes were obtained by participants increasing the number of days with MVPA bouts. Conclusions ABT's effect on weight loss throughout treatment resulted, in part, from participants increasing their intentions for PA. Controlling for group, higher PA intentions were associated with more PA obtained through more days with exercise.

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8 Record Views
2 citations in Web of Science
3 citations in Scopus

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UN Sustainable Development Goals (SDGs)

This publication has contributed to the advancement of the following goals:

#3 Good Health and Well-Being

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Collaboration types
Domestic collaboration
Web of Science research areas
Psychology, Multidisciplinary
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