Weight-Focused Physical Activity Is Associated with Poorer Eating Motivation Quality and Lower Intuitive Eating in Women - 25/04/19
Abstract |
Background |
Evidence suggests that physical activity may be related to improved eating regulation, helping people self-regulate their eating in a healthier way. Yet the positive associations between physical activity and eating-related behaviors appear to depend on the goals pursued by individuals when they engage in physical activity.
Objective |
This study investigated differences in eating motivations (informed by Self-Determination Theory) and intuitive eating between women who did physical activity to lose weight (PA-Wt) vs for non-weight goals (PA-NWt), and explores whether eating motivations mediate associations between weight-focused physical activity and intuitive eating.
Design/participants |
A sample of 1,435 physically active women (40 to 50 years) participated in a nationally representative survey conducted in 2009 in New Zealand. Women were asked whether they did physical activity predominantly to lose weight and were dichotomized into PA-Wt and PA-NWt groups.
Main outcome measures |
Questions assessing eating in response to hunger and satiety cues (intuitive eating) and eating-related motivations were completed by participants.
Statistical analyses |
Analyses of covariance, t tests, correlations, and mediation analyses were conducted to test the study hypotheses.
Results |
PA-Wt participants reported lower levels of intuitive eating than did PA-NWt (0.26<Cohen’s effect size d<2.38; all, P<0.001), and higher levels of both autonomous (0.16<d< 0.41; P<0.010) and controlled eating motivations (introjected: d=0.60, P<0.001; external: d=0.24; P<0.001). Associations between PA-Wt and intuitive eating were mediated by introjected motivation (effect ratios=0.18 to 0.29), and less prominently by intrinsic and integrated motivation.
Conclusions |
Whether women are active to lose weight or for other reasons seems important when it comes to regulating their eating: weight-focused physical activity appears to be linked to higher eating motivation (ie, quantity), while the presence of poorer-quality motivation (ie, introjected motivation) is related to a less intuitive eating style.
Le texte complet de cet article est disponible en PDF.Keywords : Intuitive eating, Self-Determination Theory, Motivation, Weight-related goals, Physical activity
Plan
| STATEMENT OF POTENTIAL CONFLICT OF INTEREST No potential conflict of interest was reported by the authors. |
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| FUNDING/SUPPORT This study was funded by the University of Otago Performance-Based Research Fund, and partially funded by the Portuguese Science and Technology Foundation (grant number SFRH/BPD/91301/2012 attributed to Eliana V. Carraça). |
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| AUTHOR CONTRIBUTIONS S. L. Leong and C. C. Horwath prepared the survey and collected the data. E. V. Carraça planned this study, conducted the analyses, and wrote the first draft. All authors reviewed and commented on subsequent drafts of the manuscript. |
Vol 119 - N° 5
P. 750-759 - mai 2019 Retour au numéro
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