Document Detail


Relationship of exercise program participation with weight loss in adults with severe obesity: assessing psychologically based mediators.
MedLine Citation:
PMID:  20890247     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
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.
Authors:
James J Annesi; Srinivasa Gorjala
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Publication Detail:
Type:  Clinical Trial; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Southern medical journal     Volume:  103     ISSN:  1541-8243     ISO Abbreviation:  South. Med. J.     Publication Date:  2010 Nov 
Date Detail:
Created Date:  2010-11-02     Completed Date:  2010-12-10     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0404522     Medline TA:  South Med J     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1119-23     Citation Subset:  AIM; IM    
Affiliation:
YMCA of Metropolitan Atlanta, Atlanta, GA; and Southern Regional Health System, Riverdale, GA 30303, USA. jamesa@ymcaatlanta.org
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MeSH Terms
Descriptor/Qualifier:
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*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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