To compare the responsiveness of two unilateral lower-limb performance-based tests, the one-leg rise test and the maximal step-up test, with the bilateral 30-second chair-stand test and the self-reported measure of physical function (HOOS/KOOS). Specific aims were to evaluate responsiveness, floor/ceiling effect and association between the instruments. Data was included from 111 participants, mean age 61.3 years (8.3), with clinically verified hip or knee osteoarthritis, who reported less than 150 minutes/week of moderate or vigorous intensity physical activity. Responsiveness, how well the instruments captured improvements, was measured as Cohen’s standardised mean difference for effect size, and was assessed from baseline to 12 months following a physical activity intervention. Other assessments were floor and ceiling effects, and correlations between tests. The maximal step-up test had an effect size of 0.57 (95% CI 0.37, 0.77), the 30-second chair-stand 0.48 (95% CI 0.29, 0.68) and the one-leg rise test 0.12 (95% CI 0.60, 0.31). The one-leg rise test had a floor effect as 72% of the participants scored zero at baseline and 63% at 12 months. The correlation between performance-based tests and questionnaires was considered to be minor (r = 0.188 to 0.226) (p = 0.018 to 0.048). The unilateral maximal step-up test seems more responsive to change in physical function compared to the bilateral 30-second chair-stand test, although the tests did not differ statistically in effect size. The maximal step-up test provides specific information about each leg for the individual and allows for comparison between the legs.

中文翻译：

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髋关节和膝关节骨关节炎的单腿测试：与两腿导向功能结果测量和自我报告功能测量的比较

比较两种单侧下肢性能测试（单腿抬高测试和最大迈步测试）与双侧 30 秒椅子站立测试和自我报告的身体功能测量（HOOS /库斯）。具体目标是评估响应能力、地板/天花板效应以及仪器之间的关联。数据来自 111 名参与者，平均年龄 61.3 岁 (8.3)，患有经临床验证的髋关节或膝关节骨关节炎，他们报告每周中等或剧烈强度体力活动少于 150 分钟。反应性，即仪器捕获改善的程度，以科恩效应大小的标准化平均差来衡量，并从基线到体力活动干预后 12 个月进行评估。其他评估包括下限和上限效应以及测试之间的相关性。最大踏步测试的效应大小为 0.57（95% CI 0.37, 0.77），30 秒椅子站立测试的效应大小为 0.48（95% CI 0.29, 0.68），单腿上升测试的效应大小为 0.12（95% CI 0.60） ，0.31）。单腿上升测试产生了地板效应，72% 的参与者在基线时得分为零，在 12 个月时这一比例为 63%。基于表现的测试和问卷调查之间的相关性被认为很小（r = 0.188 至 0.226）（p = 0.018 至 0.048）。与双侧 30 秒椅站测试相比，单侧最大台阶测试似乎对身体功能的变化更敏感，尽管这些测试在效果大小方面没有统计学差异。最大提升测试提供了个体每条腿的具体信息，并允许在腿之间进行比较。