Validity of the GAITRite® walkway system for the measurement of averaged and individual step parameters of gait
Validity of the GAITRite® walkway system for the measurement of averaged and individual step parameters of gait
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DOI：
10.1016/j.gaitpost.2004.10.005
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发表时间：
2005-12-01
期刊：
影响因子：
2.4
通讯作者：
Feller, JA
中科院分区：
文献类型：
--
作者：
Webster, KE;Wittwer, JE;Feller, JA
本研究比较了用仪器化走道系统（GAITRite（R））和三维运动分析系统（Vicon-512（R））测量的单个步骤和平均空间和时间步态参数。10名年龄在54-83岁（平均66.5岁）的接受过膝关节置换手术的受试者参加了研究。受试者以自选的舒适和快速的速度走过GAITRite（R）人行道，同时Vicon（R）系统记录附在受试者鞋上的反射标记的运动。步行速度，节奏，步长和步时间变量，平均在一个步行两个系统，显示了良好的协议水平与组内相关系数（ICC）之间的0.92和0.99和重复性系数（RC）之间的1.0%和5.9%的平均值。记录的每个脚步的步长和步时间变量也显示出在舒适和快速速度下系统之间的良好一致性（ICC在0.91和0.99之间; RC在2.6%和7.8%之间）。频率分布显示，在大多数情况下（80-94%），单个步长值在1.5 cm和0.02 s范围内。这些数据表明，GAITRite（R）系统是用于测量步态的平均和个体步参数的有效工具。它也适用于膝关节置换术后的老年受试者。(c)2004 Elsevier B. V.保留所有权利。
This study compared individual step and averaged spatial and temporal gait parameters measured with an instrumented walkway system (GAITRite (R)) with a three-dimensional motional analysis system (Vicon-512 (R)). Ten subjects aged 54-83 years (mean 66.5 years) who had undergone knee replacement surgery participated. Subjects walked across the GAITRite (R) walkway at self-selected comfortable and fast speeds at the same time as the Vicon (R) system recorded the motion of reflective markers attached to the subjects' shoes. Walking speed, cadence, step length and step time variables, averaged across one walk for both systems, showed an excellent level of agreement with intraclass correlation coefficients (ICCs) between 0.92 and 0.99 and repeatability coefficients (RCs) between 1.0% and 5.9% of mean values. Step length and step time variables recorded for each footstep also showed good agreement between the systems at both comfortable and fast speeds (ICCs between 0.91 and 0.99; RCs between 2.6% and 7.8%). Frequency distributions showed that individual step values were within 1.5 cm and 0.02 s on the majority (80-94%) of occasions. These data indicate that the GAITRite (R) system is a valid tool for measuring both averaged and individual step parameters of gait. It is also valid for use in older subjects following knee joint replacement surgery. (c) 2004 Elsevier B.V. All rights reserved.