Biomechanics of trailing leg response to slipping - evidence of interlimb and intralimb coordination.
Biomechanics of trailing leg response to slipping - evidence of interlimb and intralimb coordination.
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DOI：
10.1016/j.gaitpost.2008.12.012
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发表时间：
2009-06
期刊：
影响因子：
2.4
通讯作者：
Cham R
中科院分区：
文献类型：
--
作者：
Moyer BE;Redfern MS;Cham R
这项步态研究的特点是后腿的生物力学响应滑动。28名健康参与者分为两个年龄组（20-33岁和55-67岁），被要求在两种条件下行走：已知干燥的地板和预计干燥的甘油污染地板，导致前脚掌意外打滑脚跟接触。确定了四种与滑动相关的后腿响应策略，范围从摆动阶段的最小中断到摆动阶段的过早（脚趾离地后约50 ms）中断。老化影响极小。引导/滑动腿的响应先于拖尾肢的响应。后腿的反应的幅度与在领先/滑动腿的膝盖，这表明肢体间的协调。后腿膝关节的矫正力矩也与同侧腿髋关节的矫正力矩相关，表明下肢内协调。在滑中使用的特定的后腿的策略部分地由滑前行走模式和早期站立滑动力学决定。
This gait study characterizes the trailing leg’s biomechanical response to slips. Twenty-eight healthy participants divided into two age groups (20–33 years and 55–67 years) were asked to walk in two conditions: a known dry floor and a glycerol-contaminated floor expected to be dry, inducing an unexpected slip of the leading foot at heel contact. Four slip-related trailing leg response strategies were identified, ranging from a minimal disruption of the swing phase to a premature (~50 ms after toe off) interruption of the swing phase. Aging effects were minimal. The response of the leading/slipping leg preceded that of the trailing limb. The magnitude of the trailing leg’s response was associated with that of the knee in the leading/slipping leg, suggesting interlimb coordination. The corrective moment at the knee of the trailing leg was also correlated with that measured at the hip in the same leg, suggesting intralimb coordination. The specific trailing leg’s strategy used in a slip is partially determined by pre-slip walking patterns and early stance slip dynamics.