| Relationship of exercise program participation with weight loss in adults with severe obesity: assessing psychologically based mediators. | |
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MedLine Citation:
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PMID: 20890247 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND: Although exercise is related to weight loss, minimal energy expenditures typical in deconditioned persons explain only small portions of this reduction. Thus, it has been suggested that exercise-induced changes in psychological variables associated with appropriate eating may be mediators. METHODS: Adults with obesity (N = 106; Mean BMI = 42.0; SD = 6.0 kg/m), volunteering for a cognitive-behavioral exercise support program and group nutrition information, were assessed on overall mood, self-efficacy for controlled eating, self-regulation skills usage for appropriate eating, recalled volume of physical activity, body mass index (BMI), and waist circumference at baseline and at month six. RESULTS: All within-subject changes were significant (P < 0.001) and as expected, changes in volumes of physical activity were significantly related to BMI (β = -0.52) and waist circumference (β = -0.63) changes. These relationships were partially mediated by changes in self-efficacy and self-regulation scores. Mediation of mood changes did not, however, reach statistical significance. CONCLUSION: In severely obese persons initiating behaviorally supported exercise, weight loss may be better accounted for by changes in psychological predictors of improved eating such as self-efficacy and self-regulation than by direct energy expenditure. Implications for weight loss theory development and clinical applications were discussed. |
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Authors:
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James J Annesi; Srinivasa Gorjala |
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Publication Detail:
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Type: Clinical Trial; Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Southern medical journal Volume: 103 ISSN: 1541-8243 ISO Abbreviation: South. Med. J. Publication Date: 2010 Nov |
Date Detail:
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Created Date: 2010-11-02 Completed Date: 2010-12-10 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0404522 Medline TA: South Med J Country: United States |
Other Details:
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Languages: eng Pagination: 1119-23 Citation Subset: AIM; IM |
Affiliation:
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YMCA of Metropolitan Atlanta, Atlanta, GA; and Southern Regional Health System, Riverdale, GA 30303, USA. jamesa@ymcaatlanta.org |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Affect Cognition Diet, Reducing / psychology* Exercise / psychology* Female Humans Linear Models Male Multivariate Analysis Obesity, Morbid / psychology, rehabilitation* Psychological Theory Self Efficacy* Social Support* United States Weight Loss* |
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