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Exercise, self-efficacy, and mobility performance in overweight and obese older adults with knee osteoarthritis.
Arthritis Rheum. 2005 Oct 15; 53(5):659-65.AR

Abstract

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+Show Affiliations

Focht BC
Ohio State University, Columbus, 43210, USA. bfocht@sph.osu.edu
Rejeski WJ
No affiliation info available
Ambrosius WT
No affiliation info available
Katula JA
No affiliation info available
Messier SP
No affiliation info available

MeSH

Activities of Daily LivingDiet, ReducingExercise TherapyHumansKneeLife StyleMiddle AgedMovementObesityOsteoarthritis, KneePainPain MeasurementSingle-Blind MethodTreatment OutcomeWeight Loss

Pub Type(s)

Clinical Trial
Journal Article
Randomized Controlled Trial
Research Support, N.I.H., Extramural
Research Support, U.S. Gov't, P.H.S.

Language

eng

PubMed ID

16208674

Clinical Trial Links

Intensive Diet and Exercise for Improving Knee Osteoarthritis in Obese and Overweight Older Adults

Citation

Focht, Brian C., et al. "Exercise, Self-efficacy, and Mobility Performance in Overweight and Obese Older Adults With Knee Osteoarthritis." Arthritis and Rheumatism, vol. 53, no. 5, 2005, pp. 659-65.
Focht BC, Rejeski WJ, Ambrosius WT, et al. Exercise, self-efficacy, and mobility performance in overweight and obese older adults with knee osteoarthritis. Arthritis Rheum. 2005;53(5):659-65.
Focht, B. C., Rejeski, W. J., Ambrosius, W. T., Katula, J. A., & Messier, S. P. (2005). Exercise, self-efficacy, and mobility performance in overweight and obese older adults with knee osteoarthritis. Arthritis and Rheumatism, 53(5), 659-65.
Focht BC, et al. Exercise, Self-efficacy, and Mobility Performance in Overweight and Obese Older Adults With Knee Osteoarthritis. Arthritis Rheum. 2005 Oct 15;53(5):659-65. PubMed PMID: 16208674.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Exercise, self-efficacy, and mobility performance in overweight and obese older adults with knee osteoarthritis. AU - Focht,Brian C, AU - Rejeski,W Jack, AU - Ambrosius,Walter T, AU - Katula,Jeffrey A, AU - Messier,Stephen P, PY - 2005/10/7/pubmed PY - 2005/11/5/medline PY - 2005/10/7/entrez SP - 659 EP - 65 JF - Arthritis and rheumatism JO - Arthritis Rheum VL - 53 IS - 5 N2 - 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. SN - 0004-3591 UR - https://www.unboundmedicine.com/medline/citation/16208674/Exercise_self_efficacy_and_mobility_performance_in_overweight_and_obese_older_adults_with_knee_osteoarthritis_ DB - PRIME DP - Unbound Medicine ER -