Eke-Okoro S T
Institute for Disability Prevention and Wellness, University of Medicine and Dentistry of New Jersey, Stratford, USA.
Electromyogr Clin Neurophysiol. 1999 Sep;39(6):379-84.
The walking patterns of 13 healthy adult subjects were studied with a low technology method of gait analysis, the velocity field diagram (VFD). The intent was to explore neural control of gait by an understanding of the pattern of interaction of the parameters during walking. Subjects were asked to walk along a level walkway at five speeds, from very slow to very fast. Strides were counted and the time taken to walk the distance was recorded by means of a stop-watch. The numerical values of velocity, stride length and stride frequency were plotted against speed numbers derived by serially numbering the five speeds of walking. There was repeat recording of gait. The interacting pattern of gait parameters in the VFD was similar in all subjects and they easily formed into equations. Related gait regressions were derivable from VFD equations. Most parameters of the VFD were highly reproducible. Equations, definitions of various speeds, zoning of the VFD and other VFD descriptors were shown as indicators of neural control and clinical tools to watch during gait assessment and training. The role of the deep cerebellar nuclear complex in the determination of walking speed was highlighted.
采用一种低技术的步态分析方法——速度场图（VFD），对13名健康成年受试者的行走模式进行了研究。目的是通过了解行走过程中参数的相互作用模式来探索步态的神经控制。受试者被要求以五种速度沿着水平通道行走，从非常慢到非常快。记录步数，并通过秒表记录走完该距离所需的时间。将速度、步长和步频的数值与通过对五种行走速度进行连续编号得出的速度数值进行绘制。对步态进行了重复记录。所有受试者速度场图中步态参数的相互作用模式相似，且它们很容易形成方程。相关的步态回归可从速度场图方程中推导得出。速度场图的大多数参数具有高度可重复性。速度场图方程、各种速度的定义、速度场图分区以及其他速度场图描述符被展示为神经控制的指标以及步态评估和训练过程中需留意的临床工具。强调了小脑深部核复合体在确定步行速度中的作用。
