Interrater Reliability and Validity of the Stair Ascend/Descend Test in Subjects With Total Knee Arthroplasty
Interrater Reliability and Validity of the Stair Ascend/Descend Test in Subjects With Total Knee Arthroplasty
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DOI：
10.1016/j.apmr.2010.02.003
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发表时间：
2010-06-01
影响因子：
4.3
通讯作者：
Piva, Sara R.
中科院分区：
文献类型：
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作者：
Almeida, Gustavo J.;Schroeder, Carolyn A.;Piva, Sara R.
目的：(1)确定11阶楼梯升降测试（STTotal-11）和楼梯上（上升）测试（stupt -11）的互信度和测量误差；(2)通过确定STTotal-11和stupt -11是否与身体功能的测量有关而与非身体功能的测量无关，为其作为身体功能的有效测量方法寻找证据；(3)探讨STTotal-11和stupt -11评分与全膝关节置换术（TKA）患者下肢肌肉无力和膝关节活动范围（ROM）的关系。设计：横断面研究。环境：学术中心。参与者：患有单侧TKA的受试者（N= 43,30名女性，平均年龄68±8岁）。干预措施：不适用。主要结局指标：进行两次STrotal-11和stupl -11测试，并将得分与4项下肢表现任务、2项患者身体功能问卷、3项心理因素、膝关节ROM、股四头肌、髋关节伸肌和外展肌力量的得分进行比较。结果：类内相关系数为。STTotal-11和stupt -11的测量标准误差分别为1.14秒和1.14秒。与90%置信区间相关的最小可检测变化分别为2.6秒和1.9秒。楼梯测试和基于性能的测量以及膝盖和臀部肌肉力量之间的相关性从Pearson相关系数(r)= 0.40到0.78不等。STTotal-11和stupt -11与患者报告的一项身体功能测量有很小的相关性。Stair试验与心理因素和膝关节伸直ROM无关，而与膝关节屈曲ROM相关。结论：STTotal-11和stupt -11具有良好的相互可靠性和最小的可检测变化，足以用于临床。这种关联模式支持了阶梯测试在TKA中的有效性。
Objective: (1) To determine the interrater reliability and measurement error of an 11-step stair ascend/descend test (STTotal-11) and stair up (ascend) test (STUp-11); (2) to seek evidence for the STTotal-11 and STUp-11 as valid measures of physical function by determining if they relate to measures of physical function and do not relate to measures not of physical function; and (3) to explore if the STTotal-11 and STUp-11 scores relate to lower-extremity muscle weakness and knee range of motion (ROM) in subjects with total knee arthroplasty (TKA).Design: Cross-sectional study.Setting: Academic center.Participants: Subjects (N=43, 30 women; mean age, 68 +/- 8y) with unilateral TKA.Interventions: Not applicable.Main Outcome Measures: STrotal-11 and STUp-11 were performed twice, and scores were compared with scores on 4 lower extremity performance-based tasks, 2 patient-reported questionnaires of physical function, 3 psychologic factors, knee ROM, and strength of quadriceps, hip extensors, and abductors.Results: Intraclass correlation coefficient was .94 for both the STTotal-11 and STUp-11, standard error of measurements were 1.14 seconds and .82 seconds, and minimum detectable change associated with 90% confidence interval was 2.6 seconds and 1.9 seconds, respectively. Correlations between stair tests and performance-based measures and knee and hip muscle strength ranged from Pearson correlation coefficient (r)=.40 to .78. STTotal-11 and STUp-11 had a small correlation with one of the patient-reported measures of physical function. Stair tests were not associated with psychologic factors and knee extension ROM and were associated with knee flexion ROM.Conclusions: STTotal-11 and STUp-11 have good interrater reliability and minimum detectable changes adequate for clinical use. The pattern of associations supports the validity of the stair tests in TKA.