Concurrent related validity of the GAITRite® walkway system for quantification of the spatial and temporal parameters of gait
Concurrent related validity of the GAITRite® walkway system for quantification of the spatial and temporal parameters of gait
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DOI：
10.1016/s0966-6362(02)00053-x
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发表时间：
2003-02-01
期刊：
影响因子：
2.4
通讯作者：
Webster, K
中科院分区：
文献类型：
--
作者：
Bilney, B;Morris, M;Webster, K
GAITRite(R)是一种便携式步态分析工具，用于自动测量时空步态参数。尽管经常用于临床和研究目的，GAITRite(R)的同时有效性还没有根据标准标准进行验证。本实验的目的是调查GAITRite(R)地毯走道系统用于量化足迹模式的空间和时间参数的同时效度和重测可靠性。25名健康成人，年龄21-71岁(平均40.5岁，标准差17.2岁)，进行了三次自选步速步行试验，三次快步速步行试验，三次慢速步行试验。每项试验的数据都同时从GAITRite(注册商标)和临床步幅分析器(注册商标)收集，后者已经确定了可靠性和有效性。在首选步速、慢步速和快步速下，步速(ICC(2，1)=0.99)、步长(ICC(2，1)=0.99)和步频(ICC(2，1)=0.99)在两种测量系统之间有很高的相关性。电子地毯与步幅分析仪对单肢支撑时间的相关性为中等至高度(ICC(2，1)=0.69~0.91)，对双肢支撑的步态周期比例的相关性较弱(ICC(2，1)=0.44~0.57)。重复测量GAITRite(R)的信度较好的有速度(ICC(3，L)=0.93~0.94)、节奏(ICC(3，1)=0.92~0.94)、步长(ICC(3，1)=0.97)、单支撑(ICC(3，1)=0.85~0.93)和双肢支撑步态周期所占比例(ICC(3，1)=0.89~0.92)。低速时GAITRite(R)测量的可重复性变化较大(ICC(3，L)=0.76~0.91)。这些结果表明，GAITRite(R)系统不仅是一种便携式、简单的客观步态评估工具，而且具有很强的同时效度和重测可靠性。(C)2002 Elsevier Science B.V.保留所有权利。
The GAITRite(R) is a portable gait analysis tool for automated measurement of spatiotemporal gait parameters. Although frequently used for clinical and research purposes, the concurrent validity of GAITRite(R) has not been validated against a criterion measure. The aim of this experiment was to investigate the concurrent validity and test retest reliability of the GAITRite(R) carpet walkway system for quantification of spatial and temporal parameters of the footstep pattern. Twenty-five healthy adults aged 21 71 years (mean 40.5 years, S.D. 17.2) performed three walk trials at self-selected pace, three at fast pace and three at slow pace. For each trial, data were simultaneously collected from the GAITRite(R) and a Clinical Stride Analyzer(R), which has established reliability and validity. At preferred, slow and fast walking pace there were very high correlations between the two measurement systems for gait speed (ICC (2, 1) = 0.99), stride length (ICC (2, 1) = 0.99) and cadence (ICC (2, 1) = 0.99). Correlations between the electronic carpet and the stride analyser were moderate to high for single limb support (SLS) time (ICC (2, 1) = 0.69-0.91) and weak for the proportion of the gait cycle spent in double limb support (ICC (2,1) = 0.44-0.57). The reliability of repeated measures for the GAITRite(R) was good at preferred and fast speed for speed (ICC (3,l) = 0.93-0.94), cadence (ICC (3,1) = 0.92-0.94), stride length (ICC (3, 1) = 0.97), single support (ICC (3, 1) = 0.85-0.93) and the proportion of the gait cycle spent in double limb support (ICC (3,1) = 0.89-0.92). The repeatability of the GAITRite(R) measures were more variable at slow speed (ICC (3,l) = 0.76-0.91). These results indicate that the GAITRite(R) system has strong concurrent validity and test retest reliability, in addition to being a portable, simple clinical tool for the objective assessment of gait. (C) 2002 Elsevier Science B.V. All rights reserved.