Muscle Power Is an Independent Determinant of Pain and Quality of Life in Knee Osteoarthritis.

摘要: Objective This study examined the relationships between leg muscle strength, power, and perceived disease severity in subjects with knee osteoarthritis (OA) order to determine whether dynamic extensor power would be associated pain quality of life OA. Methods Baseline data on 190 OA (mean ± SD age 60.2 ± 10.4 years, body mass index 32.7 ± 7.2 kg/m2) were obtained from a randomized controlled trial. Knee was measured using Western Ontario McMaster Universities Osteoarthritis Index, health-related assessed Short Form 36 (SF-36). One-repetition maximum (1RM) strength bilateral press, peak during 5 voluntary velocity repetitions at 40% 70% 1RM. Results In univariate analysis, greater significantly (r = −0.17, P < 0.02) also positively SF-36 physical component summary (PCS) scores (r = 0.16, 0.05). After adjustment for multiple covariates, significant independent predictor (P ≤ 0.05) PCS 0.04). However, not an determinant or ≥ 0.06). Conclusion Muscle is OA. Compared may more clinically important measure function within this population. New trials systematically examine impact training interventions are particularly warranted.