Abstract
Background
Previous studies have shown that self-expansion (e.g., increasing positive self-content via engaging in novel, rewarding activities) is associated with smoking cessation and attenuated cigarette-cue reactivity.
Purpose
This study examined whether self-expansion is associated with better adherence, weight loss, and physical activity (PA) outcomes within a weight loss intervention.
Methods
Participants from Shape Up Rhode Island 2012, a Web-based community wellness initiative, took part in a randomized controlled trial that involved a 12-week behavioral weight loss intervention [1]. At baseline and post-intervention, objective weights and self-reported self-expansion and PA were obtained from 239 participants. Treatment adherence was assessed objectively.
Results
Self-expansion during treatment was significantly associated with percent weight loss including clinically significant weight loss (i.e., 5 %), minutes of PA, and treatment adherence. These results held after controlling for relevant covariates.
Conclusions
This is the first study to show that self-expansion is associated with better behavioral weight loss outcomes including weight loss, adherence, and PA. These results suggest that self-expansion is a promising novel target for future research which could inform health interventions.
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Acknowledgments
We recognize the contributions of the following staff at the Weight Control and Diabetes Research Center at The Miriam Hospital and the Warren Alpert Medical School of Brown University: Linda Gay, RD; Elizabeth Kuhl, PhD; Pamela Coward, MEd; Kelley Strohacker, PhD; Richard Daniello; Michelle Fisher, RN; Deborah Ranslow-Robles; and Kevin O’Leary, MS. We also recognize the contributions of the following staff at Shape Up Rhode Island: Robert Vitek and Jenna Lafayette. We also thank Claudio Nigg, PhD, for his comments on an early draft of this manuscript.
This study was supported by the National Institute of Diabetes and Digestive and Kidney Diseases (5R18DK083248-04). The funding source had no role in the design and conduct of the study; collection, management, analysis, or interpretation of the data; or the preparation, review, or approval of the manuscript. The ClinicalTrials.gov Identifier for the study is NCT01560130.
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Authors’ Statement of Conflict of Interest and Adherence to Ethical Standards
Author Tricia Leahey is Chief Scientist and a paid consultant at WayBetter, Inc. Her work with WayBetter is unrelated to this project. The remaining authors have no conflicts of interest to declare.
All authors verify that this research was carried out with adherence to appropriate ethical standards (e.g., those set by the American Psychological Association). Specifically, the research was approved by The Miriam Hospital’s Institutional Review Board, all study personnel completed appropriate ethical training, and all participants provided written informed consent to be part of the study.
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Xu, X., Leahey, T.M., Boguszewski, K. et al. Self-Expansion is Associated with Better Adherence and Obesity Treatment Outcomes in Adults. ann. behav. med. 51, 13–17 (2017). https://doi.org/10.1007/s12160-016-9823-7
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DOI: https://doi.org/10.1007/s12160-016-9823-7