Measures of frontal plane stability during treadmill and overground walking
Measures of frontal plane stability during treadmill and overground walking
复制标题
DOI：
10.1016/j.gaitpost.2010.01.002
复制
发表时间：
2010-03-01
期刊：
影响因子：
2.4
通讯作者：
Grabiner, Mark D.
中科院分区：
文献类型：
--
作者：
Rosenblatt, Noah J.;Grabiner, Mark D.
考虑到老年人跌倒的后果，人们的注意力集中在确定与侧向稳定性和跌倒风险变化相关的变量上。步长（SW）和步长可变性（SWV）传统上与这种变化有关。近年来，“稳定裕度”（MOS）已被用来描述动态稳定性。尽管这些措施可能会受到运动发生条件的影响，但只有一项已发表的受试者内研究比较了地上步行和跑步机步行期间的SW（但不是SWV或MOS）。因此，我们比较了SW，SWV和最小MOS（MOS（min））在10个健康的年轻受试者走在自选的速度，地上和在跑步机上。我们发现，在跑步机行走过程中，SW显著更大（p = 0.001），SWV显著更小（p = 0.001），并且这些变化在任务之间有意义地相关。相比之下，MOS（分钟）是不敏感的跑步机与地上行走。这表明，第一，SW和SWV只部分反映额面稳定性，第二，中枢神经系统的目标可能是保持恒定的MOS（分钟），无论任务。(C)2010 Elsevier B.V.保留所有权利。
Given the consequences of falling to the side by older adults, attention has focused on identifying variables associated with changes in lateral stability and fall risk. Step-width (SW) and step-width variability (SWV) have traditionally been associated with such changes. Recently the "margin of stability" (MOS) has been adopted for describing dynamic stability. Although these measures may be influenced by the conditions during which locomotion occurs, only one published within-subject study has compared SW (but not SWV or MOS) during overground and treadmill walking. Therefore, we compared SW, SWV and minimum MOS (MOS(min)) in 10 healthy young subjects walking at self-selected speeds, both overground and on a treadmill. We found SW was significantly larger (p = 0.001), and SWV significantly smaller (p = 0.001) during treadmill walking, and that these changes were meaningfully correlated between tasks. In contrast, MOS(min) was insensitive to treadmill versus overground walking. This suggested first, that SW and SWV only partially reflect frontal plane stability, and second, that the goal of the central nervous system may be to maintain a constant MOS(min) regardless of task. (C) 2010 Elsevier B.V. All rights reserved.