REPEATABILITY OF KINEMATIC, KINETIC, AND ELECTROMYOGRAPHIC DATA IN NORMAL ADULT GAIT
REPEATABILITY OF KINEMATIC, KINETIC, AND ELECTROMYOGRAPHIC DATA IN NORMAL ADULT GAIT
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DOI：
10.1002/jor.1100070611
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发表时间：
1989-11-01
影响因子：
2.8
通讯作者：
COCHRAN, GVB
中科院分区：
文献类型：
--
作者：
KADABA, MP;RAMAKRISHNAN, HK;COCHRAN, GVB
在定量步态分析结果的临床应用中，步态变量的重复性是一个重要的考虑因素。采用统计学方法对40名正常受试者的运动学、动力学和肌电数据波形及时空参数的重复性进行评价。受试者在每个测试日和三个不同的测试日以他们喜欢的或自然的速度行走时进行三次评估。受试者内的可重复性对于矢状面运动数据来说是非常好的，无论是在测试日之内还是在测试日之间。对关节正、横平面角度运动，试验日内重复性好，试验日间重复性差。关节角运动在正面面和横向面之间较差的可修复性部分归因于标记物对齐的变化。垂直反力和前后剪力的重复性较中外侧剪力强。矢状面关节力矩比额、横面关节力矩可重复性高。对于肌电图数据，一天内的重复性略好于测试天之间的重复性。总的来说，结果表明，当受试者以自然或偏好的速度行走时，步态变量具有相当高的可重复性。这些观察结果表明，基于单一步态评估结果的重要临床决策可能是合理的。
The repeatability of gait variables is an important consideration in the clinical use of results of quantitative gait analysis. Statistical measures were used to evaluate repeatability of kinematic, kinetic, and electromyograhic data waveforms and spatiotemporal parameters of 40 normal subjects. Subjects were evaluated three times on each test day and on three different test days while walking at their preferred or natural speed. Intrasubject repeatability was excellent for kinematic data in the sagittal plane both within a test day as well as between test days. For joint angle motion in the frontal and transverse planes, the repeatability was good within a test day and poor between test days. Poor between-day repatability of joint angle motion in the frontal and transverse planes was noted to be partly die to variabilities in the alignment of markers. Vertical reaction and fore-aft shear forces were more repeatable than the mediolateral shear force. Sagittal plane joint moments were more repeatable than frontal or transverse plane moments. For electromyographic data, repeatability within a day was slightly better than between test days. In general, the results demonstrate that with the subjects walking at their natural or preferred speed, the gait variables are quite repeatable. These observations suggest that it may be reasonable to base significant clinical decisions on the results of a single gait evaluation.