POSTURAL REQUIREMENTS AND PROGRESSION VELOCITY IN YOUNG WALKERS
POSTURAL REQUIREMENTS AND PROGRESSION VELOCITY IN YOUNG WALKERS
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DOI：
10.1080/00222895.1992.9941606
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发表时间：
1992-03-01
影响因子：
1.4
通讯作者：
BRENIERE, Y
中科院分区：
文献类型：
--
作者：
BRIL, B;BRENIERE, Y
本文描述了步态速度的发展变化，并将这些变化与步态参数，指标姿势稳定性（步宽和横向加速度）和速度的两个组成部分（节奏和步长）。他们的速度范围在独立行走的前6个月增加了3倍，然后保持不变。相比之下，步宽减少约两倍。然而，在成人中，步频和步长对速度的贡献大致相等，当婴儿开始独立行走时，速度的增加主要是由于步长的增加。独立行走5个月后，模式逆转，速度的增加主要是由于节奏的增加。这种模式在今后18个月内保持不变。从发展的角度来看，数据引导我们解释早期步行（前5个月）作为一个过程的整合姿势的限制到动态的必要性步态运动。第二阶段，在独立行走4至5个月后开始，被认为是以步态参数的更精确调整为特征的调谐阶段。
This article describes developmental changes in gait velocity and relates these changes to gait parameters that index postural stability (step width and lateral acceleration) and two components of velocity (cadence and step length).Five children were observed longitudinally over a 2-year period after onset of independent walking. Their range of speed increased threefold in the first 6 months of independent walking and then remained constant. In contrast, step width decreased approximately twofold. Whereas in adults, cadence and step length contribute approximately equally to speed, when infants first begin to walk independently, increase in velocity is due mostly to increased step length. After 5 months of independent walking, the pattern reverses, and increase in velocity is due primarly to increased cadence. The pattern remains constant over the next 18 months. From a developmental point of view, the data lead us to interpret early walking (the first 5 months) as a process of integration of postural constraints into the dynamic necessities of gait movement. A second phase, beginning after 4 to 5 months of independent walking, is considered to be a tuning phase characterized by a more precise adjustment of the gait parameters.