The Permanente Journal
Introduction: The aim of this study was to evaluate 1) if completed exercise amounts were associated with short- and long-term weight loss within a cognitive behavioral intervention and 2) if changes in theory-based psychosocial factors significantly explained weight change.
Methods: A total of 110 women with obesity participated in a yearlong treatment focused on self-regulation and were grouped based on their amount of completed exercise and assessed on changes in weight, self-regulation, and self-efficacy.
Results: There were significant overall improvements in all study measures from baseline–month 6 and baseline–month 12. Overall weight loss means (–5.8 and –5.3 kg, respectively) did not significantly differ across groups averaging the equivalent of < 2.5; 2.6–4.5; 4.6–7.0; and > 7.0 moderate-intensity exercise sessions per week. Similarly, psychosocial improvements did not significantly differ by exercise amount grouping. Increase in exercise self-regulation significantly predicted eating self-regulation gains over both 6 and 12 months. Over the same time periods, the significant prediction of weight loss by eating self-regulation increase was mediated by change in eating self-efficacy.
Conclusion: Results suggest attainment of government-recommended amounts of exercise are not associated with significantly greater weight loss than lower amounts of exercise within an intervention focused on self-regulation. Associations of exercise with psychosocial correlates of weight loss should be a treatment consideration.
Annesi, James J. and Sevene, Patricia G., "Short- and Long-Term Weight Loss Among Women Is Unrelated to Completed Exercise Within an Obesity Intervention Focused on Self-Regulation" (2023). Kinesiology Faculty Publications and Presentations. 44.