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A group-mediated physical activity intervention in older knee osteoarthritis patients: effects on social cognitive outcomes
Focht BC, Garver MJ, Lucas AR, Devor ST, Emery CF, Hackshaw KV, Fairman CM, Bowman J, Rejeski WJ
Journal of Behavioral Medicine 2017 Jun;40(3):530-537
clinical trial
6/10 [Eligibility criteria: No; Random allocation: Yes; Concealed allocation: No; Baseline comparability: Yes; Blind subjects: No; Blind therapists: No; Blind assessors: Yes; Adequate follow-up: No; Intention-to-treat analysis: Yes; Between-group comparisons: Yes; Point estimates and variability: Yes. Note: Eligibility criteria item does not contribute to total score] *This score has been confirmed*

The objective of the present study was to compare a group-mediated cognitive behavioral (GMCB) physical activity intervention with traditional exercise therapy (TRAD) upon select social cognitive outcomes in sedentary knee osteoarthritis (knee OA) patients. A total of 80 patients (mean age 63.5 years; 84% women) were recruited using clinic and community-based strategies to a 12-month, single-blind, two-arm, randomized controlled trial. Mobility-related self-efficacy, self-regulatory self-efficacy (SRSE), and satisfaction with physical function (SPF) were assessed at baseline, 3, and 12 months. Results of intent-to-treat 2 (treatment: GMCB and TRAD) x 2 (time: 3 and 12 month) analyses of covariance yielded significantly greater increases in SRSE and SPF (p < 0.01) relative to TRAD. Partial correlations revealed that changes in SRSE and SPF were significantly related (p < 0.05) to improvements in physical activity and mobility at 3 and 12-months. The GMCB intervention yielded more favorable effects on important social cognitive outcomes than TRAD; these effects were related to improvements in physical activity and mobility.

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