PM R. 2012 May;4(5 Suppl):S45-52.
Resistance exercise for knee osteoarthritis.
Source
Department of Orthopaedics and Rehabilitation, Divisions of Sports Medicine, Physical Medicine and Research, UF Orthopaedics and Sports Medicine Institute, P.O. Box 112727, University of Florida, Gainesville, FL 32611(⁎).
Abstract
The initiation, progression, and severity of knee osteoarthritis (OA) have been associated with decreased muscular strength and alterations in joint biomechanics. Chronic OA pain may lead to anxiety, depression, fear of movement, and poor psychological outlook. The fear of movement may prevent participation in exercise and social events, which could lead to further physical and social isolation. Resistance exercise (RX) has been shown to be an effective intervention both for decreasing pain and improving physical function and self-efficacy. RX may restore muscle strength and joint mechanics while improving physical function. RX also may normalize muscle firing patterns and joint biomechanics, leading to reductions in joint pain and cartilage degradation. These physical adaptations could lead to improved self-efficacy and decreased anxiety and depression. RX can be prescribed and performed by patients across the spectrum of OA severity. When designing and implementing an RX program for a patient with knee OA, one should consider both the degree of OA severity and the level of pain. RX, either in the home or at a fitness facility, is an important component of a comprehensive regimen designed to offset the physical and psychological limitations associated with knee OA. Unique considerations for this population include (1) monitoring pain during and after exercise, (2) providing days of rest when disease flares occur, and (3) infusing variety into the exercise regimen to encourage adherence.
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