Behavioral and Psychological Factors Associated with 12-Month Weight Change in a Physical Activity Trial

Examining behavioral and psychological factors relating to weight stability over a 1-year period is of public health importance. We conducted a physical activity (PA) intervention trial for women (N=247; mean age=47.5±10.7; mean BMI=28.6±5.3) in which participants were assigned to one of three grou...

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Main Authors: Melissa A. Napolitano, Sharon Hayes
Format: Article
Language:English
Published: Wiley 2011-01-01
Series:Journal of Obesity
Online Access:http://dx.doi.org/10.1155/2011/515803
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author Melissa A. Napolitano
Sharon Hayes
author_facet Melissa A. Napolitano
Sharon Hayes
author_sort Melissa A. Napolitano
collection DOAJ
description Examining behavioral and psychological factors relating to weight stability over a 1-year period is of public health importance. We conducted a physical activity (PA) intervention trial for women (N=247; mean age=47.5±10.7; mean BMI=28.6±5.3) in which participants were assigned to one of three groups (two PA and one contact-control). By Month 12, participants achieved 140.4±14.82 min of PA/week, with no group differences. Weight status change from baseline to Month 12 was categorized: no change (N=154; 62.4%); increase (N=34; 13.8%); decrease (N=59; 23.9%). Discriminant function analyses indentified two statistically significant dimensions associated with weight change. Dimension 1 was positively weighted by mood (0.73) and self-efficacy (0.79); dimension 2 was positively weighted to change in physical activity (0.58) and fat consumption (0.55). Results provide further evidence for the importance of behavior in long-term weight maintenance, particularly physical activity and dietary fat. These findings also provide evidence for the importance of addressing psychosocial variables, in particular depressed mood and self-efficacy.
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spelling doaj-art-1c45ab73138b41aa9afd33f6033abde02025-02-03T01:22:00ZengWileyJournal of Obesity2090-07082090-07162011-01-01201110.1155/2011/515803515803Behavioral and Psychological Factors Associated with 12-Month Weight Change in a Physical Activity TrialMelissa A. Napolitano0Sharon Hayes1Departments of Kinesiology and Public Health and Center for Obesity Research and Education, Temple University, 3223 North Broad Street, Suite 175, Philadelphia, PA 19140, USACenter for Obesity Research and Education, Temple University, 3223 North Broad Street, Suite 175, Philadelphia, PA 19140, USAExamining behavioral and psychological factors relating to weight stability over a 1-year period is of public health importance. We conducted a physical activity (PA) intervention trial for women (N=247; mean age=47.5±10.7; mean BMI=28.6±5.3) in which participants were assigned to one of three groups (two PA and one contact-control). By Month 12, participants achieved 140.4±14.82 min of PA/week, with no group differences. Weight status change from baseline to Month 12 was categorized: no change (N=154; 62.4%); increase (N=34; 13.8%); decrease (N=59; 23.9%). Discriminant function analyses indentified two statistically significant dimensions associated with weight change. Dimension 1 was positively weighted by mood (0.73) and self-efficacy (0.79); dimension 2 was positively weighted to change in physical activity (0.58) and fat consumption (0.55). Results provide further evidence for the importance of behavior in long-term weight maintenance, particularly physical activity and dietary fat. These findings also provide evidence for the importance of addressing psychosocial variables, in particular depressed mood and self-efficacy.http://dx.doi.org/10.1155/2011/515803
spellingShingle Melissa A. Napolitano
Sharon Hayes
Behavioral and Psychological Factors Associated with 12-Month Weight Change in a Physical Activity Trial
Journal of Obesity
title Behavioral and Psychological Factors Associated with 12-Month Weight Change in a Physical Activity Trial
title_full Behavioral and Psychological Factors Associated with 12-Month Weight Change in a Physical Activity Trial
title_fullStr Behavioral and Psychological Factors Associated with 12-Month Weight Change in a Physical Activity Trial
title_full_unstemmed Behavioral and Psychological Factors Associated with 12-Month Weight Change in a Physical Activity Trial
title_short Behavioral and Psychological Factors Associated with 12-Month Weight Change in a Physical Activity Trial
title_sort behavioral and psychological factors associated with 12 month weight change in a physical activity trial
url http://dx.doi.org/10.1155/2011/515803
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