Journal
HEALTH PSYCHOLOGY
Volume 28, Issue 6, Pages 709-716Publisher
AMER PSYCHOLOGICAL ASSOC
DOI: 10.1037/a0016764
Keywords
Multibehavior change; autonomy; obesity; randomized controlled trial; physical activity
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Funding
- Portuguese Science and Technology Foundation [POCI/DES/57705/2004, SFRH/BPD/35953/2007]
- Calouste Gulbenkian Foundation [65565/2004]
- Fundação para a Ciência e a Tecnologia [POCI/DES/57705/2004, SFRH/BPD/35953/2007] Funding Source: FCT
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Objective: Successful weight management relies on at least two health behaviors, eating and exercise. However, little is known about their interaction on a motivational and behavioral level. Based on the Hierarchical Model of Motivation the authors examined whether exercise-specific motivation can transfer to eating regulation during a lifestyle weight control program. The authors further investigated whether general, treatment-related, and exercise motivation underlie the relation between increased exercise and improved eating regulation. Design: Overweight/obese women participated in a I-year randomized controlled trial (N = 239). The intervention focused on promoting physical activity and internal motivation for exercise and weight loss, following Self-Determination Theory. The control group received general health education. Main Outcome Measures: General and exercise specific self-determination, eating self-regulation variables, and physical activity behavior. Results: General self-determination and more autonomous exercise motivation predicted eating self-regulation over 12 months. Additionally, general and exercise self-determination fully mediated the relation between physical activity and eating self-regulation. Conclusion: Increased general self-determination and exercise motivation seem to facilitate improvements in eating self-regulation during weight control in women. These motivational mechanisms also underlie the relationship between improvements in exercise behavior and eating regulation.
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