Promoting Physical Activity in Older Adults With Knee Osteoarthritis and Hypertension: A Randomized Controlled Trial

in Journal of Aging and Physical Activity
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A 6-month self-efficacy intervention was compared with attention-control intervention on physical activity, clinical outcomes, and mediators immediate postintervention and 6-month postintervention in 182 older adults with knee osteoarthritis and hypertension using a randomized controlled trial design. The intervention group received six weekly individual physical therapy sessions for lower-extremity exercise and fitness walking and nine biweekly nurse telephone counseling sessions. The attention-control group received six weekly and nine biweekly nurse telephone sessions on health topics. Lower-extremity exercise was assessed by e-diary; fitness walking was assessed by accelerometer and e-diary; blood pressure was assessed by automated monitor; function was assessed by performance-based tests and questionnaires; and pain, self-efficacy, and outcome expectancy were assessed by questionnaires. Self-reported lower-extremity exercise and fitness walking, function, pain, self-efficacy, and outcome expectancy showed significant group or group by time effects favoring intervention. The intervention did not improve physical activity by accelerometer and blood pressure. Mean minutes of fitness walking fell short of the 150 min/week goal.

Schlenk and Sereika are with the School of Nursing, University of Pittsburgh, Pittsburgh, PA, USA. Fitzgerald and Rogers are with the School of Health and Rehabilitation Sciences, University of Pittsburgh, Pittsburgh, PA, USA. Kwoh is with the Division of Rheumatology, College of Medicine, University of Arizona, Tucson, AZ, USA.

Schlenk (els100@pitt.edu) is corresponding author.
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