McDonough A L, Batavia M, Chen F C, Kwon S, Ziai J
Department of Physical Therapy, New York University, New York, NY, USA.
Arch Phys Med Rehabil. 2001 Mar;82(3):419-25. doi: 10.1053/apmr.2001.19778.
To compare the concurrent validity and reliability of the GAITRite computerized gait analysis system with validated paper-and-pencil and video-based methods.
Within-groups, repeated-measures design.
Research laboratory in a physical therapy education program.
One healthy woman, age 27 years.
A subject walked across the walkway of the GAITRite system at various walking rates and degrees of step symmetry for 2 of the 3 analyses. Paper placed over the walkway enabled concurrent paper-and-pencil analysis. The subject was concurrently videotaped from the side. For the other analysis, a stride simulator with known step and stride lengths was applied to the walkway to simulate 2 steps and 1 stride.
Cadence, walking speed, right and left step and stride lengths, and right and left step times.
Excellent paper-and-pencil and GAITRite correlations (intraclass correlation coefficient [ICC] > 95) for spatial measures and excellent video-based and GAITRite correlations (ICC > 93) for temporal measures were found. GAITRite measures of step lengths and times were reliable in both walkway center and left-of-center measurements.
Based on this data, GAITRite is a valid and reliable tool for measuring selected spatial and temporal parameters of gait.
比较GAITRite计算机化步态分析系统与经过验证的纸笔法和基于视频的方法的同时效度和信度。
组内重复测量设计。
物理治疗教育项目中的研究实验室。
一名27岁的健康女性。
在3次分析中的2次分析中，受试者以不同的步行速度和步幅对称性穿过GAITRite系统的通道。在通道上放置纸张以进行同步的纸笔分析。同时从侧面拍摄受试者的录像。对于另一次分析，将具有已知步长和步幅长度的步幅模拟器应用于通道以模拟2步和1个步幅。
步频、步行速度、左右步长和步幅长度以及左右步时。
发现空间测量方面纸笔法与GAITRite具有极好的相关性（组内相关系数[ICC]>95），时间测量方面基于视频的方法与GAITRite具有极好的相关性（ICC>93）。GAITRite测量的步长和步时在通道中心和中心左侧测量中均可靠。
基于这些数据，GAITRite是测量步态选定空间和时间参数的有效且可靠的工具。
