Self-Expansion is Associated with Better Adherence and Obesity Treatment Outcomes in Adults
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.
This study examined whether self-expansion is associated with better adherence, weight loss, and physical activity (PA) outcomes within a weight loss intervention.
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 . At baseline and post-intervention, objective weights and self-reported self-expansion and PA were obtained from 239 participants. Treatment adherence was assessed objectively.
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.
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.
KeywordsSelf-expansion Weight loss Physical activity Adherence Obesity
- 2.Aron A, Aron EN, Norman C. The self-expansion model of motivation and cognition in close relationships and beyond. In: Clark M, Fletcher G, eds. Blackwell Handbook in Social Psychology, Vol. 2: Interpersonal Processes. Oxford, England: Blackwell; 2001: 478-501.Google Scholar
- 13.Lewandowski, GW Jr., Aron A. The self-expansion scale: Construction and validation. Poster presented at: The Society of Personality and Social Psychology Annual Meeting; February 2002; Savannah, GA.Google Scholar
- 16.Hayes AF. Introduction to mediation, moderation, and conditional process analysis: A regression-based approach. NY: The Guilford Press; 2013.Google Scholar