Document Detail


Exercise, self-efficacy, and mobility performance in overweight and obese older adults with knee osteoarthritis.
MedLine Citation:
PMID:  16208674     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
OBJECTIVE: To examine changes in mobility-related self efficacy following exercise and dietary weight loss interventions in overweight and obese older adults with knee osteoarthritis (OA), and to determine if self efficacy and pain mediate the effects of the interventions on mobility task performance. METHODS: The Arthritis, Diet, and Activity Promotion Trial was an 18-month, single-blind, randomized, controlled trial comparing the effects of exercise alone, dietary weight loss alone, a combination of exercise plus dietary weight loss, and a healthy lifestyle control intervention in the treatment of 316 overweight or obese older adults with symptomatic knee OA. Participants completed measures of stair-climb time and 6-minute walk distance, self efficacy for completing each mobility task, and self-reported pain at baseline, 6 months, and 18 months during the trial. RESULTS: Mixed model analyses of covariance of baseline adjusted change in the outcomes demonstrated that the exercise + dietary weight loss intervention produced greater improvements in mobility-related self efficacy (P = 0.0035), stair climb (P = 0.0249) and 6-minute walk performance (P = 0.00031), and pain (P = 0.09) when compared with the healthy lifestyle control intervention. Mediation analyses revealed that self efficacy and pain served as partial mediators of the beneficial effect of exercise + dietary weight loss on stair-climb time. CONCLUSION: Exercise + dietary weight loss results in improved mobility-related self efficacy; changes in these task-specific control beliefs and self-reported pain serve as independent partial mediators of the beneficial effect of exercise + dietary weight loss on stair-climb performance.
Authors:
Brian C Focht; W Jack Rejeski; Walter T Ambrosius; Jeffrey A Katula; Stephen P Messier
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Publication Detail:
Type:  Clinical Trial; Journal Article; Randomized Controlled Trial; Research Support, N.I.H., Extramural; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Arthritis and rheumatism     Volume:  53     ISSN:  0004-3591     ISO Abbreviation:  Arthritis Rheum.     Publication Date:  2005 Oct 
Date Detail:
Created Date:  2005-10-11     Completed Date:  2005-11-04     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  0370605     Medline TA:  Arthritis Rheum     Country:  United States    
Other Details:
Languages:  eng     Pagination:  659-65     Citation Subset:  AIM; IM    
Affiliation:
Ohio State University, Columbus, 43210, USA. bfocht@sph.osu.edu
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MeSH Terms
Descriptor/Qualifier:
Activities of Daily Living
Diet, Reducing*
Exercise Therapy*
Humans
Knee / physiopathology
Life Style
Middle Aged
Movement / physiology*
Obesity / complications,  diet therapy*
Osteoarthritis, Knee / complications,  diet therapy*
Pain / physiopathology
Pain Measurement
Single-Blind Method
Treatment Outcome
Weight Loss
Grant Support
ID/Acronym/Agency:
60 AG104845/AG/NIA NIH HHS; AG14131/AG/NIA NIH HHS; M01-RR07122/RR/NCRR NIH HHS

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