OBJECTIVES: To identify the determinants of self-report mobility measures in people with knee osteoarthritis (OA) and to compare self-report measures with physical performance. DESIGN: Cross-sectional, prospective. SETTING: Motor performance laboratory and human mobility research center. PARTICIPANTS: A convenient sample of 54 participants with medial compartment knee OA (32 women, 22 men; age 68.3+/-8.7y; range, 50-87y). Three participants were excluded because of the presence of lateral knee OA on radiographs. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Self-reports were recorded by using the Western Ontario McMaster Universities Osteoarthritis Index (WOMAC) and the Medical Outcomes Study 36-Item Short-Form Health Survey (SF-36). Performance measures included the six-minute walk test (6MWT), Timed Up & Go (TUG) test, and a standardized stair-climbing task (STR). RESULTS: Stepwise linear regression analysis identified models that included pain, quadriceps and hamstrings strength, and depression to explain 62% to 73% of the variance in scores on the physical functioning subscale of the WOMAC and the SF-36. These self-report measures had a moderate relation (r range, .46-.64) with performance measures (6MWT, TUG, STR). CONCLUSIONS: Self-report measures were strongly related to pain; physical performance measures were strongly related to self-efficacy. Regression models showed that self-report scores reflect pain, knee strength, and depression. The relation between self-report and performance measures was moderate, suggesting that these examine different aspects of mobility.
OBJECTIVES: To identify the determinants of self-report mobility measures in people with knee osteoarthritis (OA) and to compare self-report measures with physical performance. DESIGN: Cross-sectional, prospective. SETTING: Motor performance laboratory and human mobility research center. PARTICIPANTS: A convenient sample of 54 participants with medial compartment knee OA (32 women, 22 men; age 68.3+/-8.7y; range, 50-87y). Three participants were excluded because of the presence of lateral knee OA on radiographs. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Self-reports were recorded by using the Western Ontario McMaster Universities Osteoarthritis Index (WOMAC) and the Medical Outcomes Study 36-Item Short-Form Health Survey (SF-36). Performance measures included the six-minute walk test (6MWT), Timed Up & Go (TUG) test, and a standardized stair-climbing task (STR). RESULTS: Stepwise linear regression analysis identified models that included pain, quadriceps and hamstrings strength, and depression to explain 62% to 73% of the variance in scores on the physical functioning subscale of the WOMAC and the SF-36. These self-report measures had a moderate relation (r range, .46-.64) with performance measures (6MWT, TUG, STR). CONCLUSIONS: Self-report measures were strongly related to pain; physical performance measures were strongly related to self-efficacy. Regression models showed that self-report scores reflect pain, knee strength, and depression. The relation between self-report and performance measures was moderate, suggesting that these examine different aspects of mobility.
Authors: Lucas L A Kleijn; Wouter L W van Hemert; Will G H Meijers; Arnold D M Kester; Lukas Lisowski; Bernd Grimm; Ide C Heyligers Journal: Knee Surg Sports Traumatol Arthrosc Date: 2007-06-23 Impact factor: 4.342
Authors: Jennifer S Howard; Carl G Mattacola; David R Mullineaux; Robert A English; Christian Lattermann Journal: J Sport Rehabil Date: 2014-02-28 Impact factor: 1.931
Authors: N A Segal; M C Nevitt; R D Welborn; U-S D T Nguyen; J Niu; C E Lewis; D T Felson; L Frey-Law Journal: Osteoarthritis Cartilage Date: 2015-03-09 Impact factor: 6.576
Authors: Carol Ewing Garber; Mary L Greaney; Deborah Riebe; Claudio R Nigg; Patricia A Burbank; Phillip G Clark Journal: BMC Geriatr Date: 2010-02-03 Impact factor: 3.921