跑步机行走过程中骨盆和腰椎角运动测量的可靠性

Reliability of measurement of angular movements of the pelvis and lumbar spine during treadmill walking.

作者信息

Taylor N, Evans O, Goldie P

机构信息

Faculty of Health Sciences, La Trobe University, Australia.

出版信息

Physiother Res Int. 2001;6(4):205-23. doi: 10.1002/pri.229.

DOI:10.1002/pri.229

PMID:11833243

Abstract

BACKGROUND AND PURPOSE

Angular movements of the pelvis and lumbar spine are thought to play an important role in walking. However, little is known about the amount of unpredictable variability in measurement of these movements during human walking. The aim of the present study was to determine the retest reliability of measuring the angular movements of the pelvis and lumbar spine during unimpaired familiarized treadmill walking.

METHOD

Retest reliability for 26 subjects without pathology was determined over a one-week interval. Subjects walked on a treadmill at self-selected or a slower speed while measurements of the three-dimensional angular movements were taken with a computer-based video analysis system.

RESULTS

The frontal plane movements of pelvic list and lumbar lateral flexion (relative to the pelvis) could be measured with high retest reliability at both self-selected and slow walking speeds (intraclass coefficient (ICC) (2, 1) > or = 0.81). In contrast, transverse and sagittal plane movements demonstrated moderate reliability at both speeds (0.37 < or = ICC (2, 1) < or = 0.76). Averaging the measurement over six strides resulted in increased observed reliability (self-selected walking speed summary Pearson's r = 0.71, slow walking speed summary Pearson's r = 0.79) compared to taking the measurement based on a single stride (self-selected walking speed summary Pearson's r = 0.63, slow walking speed summary Pearson's r = 0.67). Unlike pelvic and lumbar movements (relative to the pelvis), the measurement of lumbar movements (relative to the global reference frame) appeared to depend on whether subjects were walking at self-selected or slow speeds.

CONCLUSIONS

Measurement of pelvic list and lumbar lateral flexion (relative to the pelvis) could be applied with confidence to hypothesis testing about individuals or groups. Movements in the transverse and sagittal planes are unlikely to be appropriate in hypothesis testing about individuals and hence clinical practice, but may still have experimental applications in hypothesis testing about groups.

摘要

背景与目的

骨盆和腰椎的角向运动被认为在步行中起重要作用。然而，对于人类步行过程中这些运动测量的不可预测变异性程度知之甚少。本研究的目的是确定在无障碍的熟悉跑步机步行过程中测量骨盆和腰椎角向运动的重测信度。

方法

对26名无病理状况的受试者在一周间隔内进行重测信度测定。受试者在跑步机上以自选速度或较慢速度行走，同时使用基于计算机的视频分析系统测量三维角向运动。

结果

在自选速度和慢走速度下，骨盆倾斜和腰椎侧屈（相对于骨盆）的额状面运动均可进行高重测信度测量（组内相关系数（ICC）（2,1）≥0.81）。相比之下，横切面和矢状面运动在两种速度下均显示出中等信度（0.37≤ICC（2,1）≤0.76）。与基于单一步幅进行测量相比（自选步行速度汇总皮尔逊相关系数r = 0.63，慢走速度汇总皮尔逊相关系数r = 0.67），对六个步幅的测量进行平均可提高观察到的信度（自选步行速度汇总皮尔逊相关系数r = 0.71，慢走速度汇总皮尔逊相关系数r = 0.79）。与骨盆和腰椎运动（相对于骨盆）不同，腰椎运动（相对于全局参考系）的测量似乎取决于受试者是以自选速度还是慢速度行走。