Regterschot G Ruben H, Zhang Wei, Baldus Heribert, Stevens Martin, Zijlstra Wiebren
University of Groningen, University Medical Center Groningen, Center for Human Movement Sciences, Groningen, The Netherlands.
Philips Research Europe, Eindhoven, The Netherlands.
Gait Posture. 2014;40(1):220-4. doi: 10.1016/j.gaitpost.2014.03.193. Epub 2014 Apr 13.
This study investigated test-retest reliability of sensor-based sit-to-stand (STS) peak power and other STS measures in young and older adults. In addition, test-retest reliability of the sensor method was compared to test-retest reliability of the Timed Up and Go Test (TUGT) and Five-Times-Sit-to-Stand Test (FTSST) in older adults. Ten healthy young female adults (20-23 years) and 31 older adults (21 females; 73-94 years) participated in two assessment sessions separated by 3-8 days. Vertical peak power was assessed during three (young adults) and five (older adults) normal and fast STS trials with a hybrid motion sensor worn on the hip. Older adults also performed the FTSST and TUGT. The average sensor-based STS peak power of the normal STS trials and the average sensor-based STS peak power of the fast STS trials showed excellent test-retest reliability in young adults (intra-class correlation (ICC)≥0.90; zero in 95% confidence interval of mean difference between test and retest (95%CI of D); standard error of measurement (SEM)≤6.7% of mean peak power) and older adults (ICC≥0.91; zero in 95%CI of D; SEM≤9.9%). Test-retest reliability of sensor-based STS peak power and TUGT (ICC=0.98; zero in 95%CI of D; SEM=8.5%) was comparable in older adults, test-retest reliability of the FTSST was lower (ICC=0.73; zero outside 95%CI of D; SEM=14.4%). Sensor-based STS peak power demonstrated excellent test-retest reliability and may therefore be useful for clinical assessment of functional status and fall risk.
本研究调查了基于传感器的坐立试验（STS）峰值功率及其他STS测量指标在年轻人和老年人中的重测信度。此外，还比较了老年人中基于传感器方法的重测信度与定时起立行走测试（TUGT）和五次坐立试验（FTSST）的重测信度。10名健康年轻成年女性（20 - 23岁）和31名老年人（21名女性；73 - 94岁）参加了两次评估，两次评估间隔3 - 8天。通过佩戴在髋部的混合运动传感器，在三次（年轻人）和五次（老年人）正常及快速STS试验中评估垂直峰值功率。老年人还进行了FTSST和TUGT。正常STS试验中基于传感器的平均STS峰值功率以及快速STS试验中基于传感器的平均STS峰值功率在年轻人（组内相关系数（ICC）≥0.90；测试与重测之间平均差异的95%置信区间（95%CI of D）为零；测量标准误（SEM）≤平均峰值功率的6.7%）和老年人（ICC≥0.91；95%CI of D为零；SEM≤9.9%）中显示出优异的重测信度。在老年人中，基于传感器的STS峰值功率和TUGT的重测信度相当（ICC = 0.98；95%CI of D为零；SEM = 8.5%），FTSST的重测信度较低（ICC = 0.73；95%CI of D之外不为零；SEM = 14.4%）。基于传感器的STS峰值功率显示出优异的重测信度，因此可能有助于临床评估功能状态和跌倒风险。
