The threshold trip duration for which recovery is no longer possible is associated with strength and reaction time.
The threshold trip duration for which recovery is no longer possible is associated with strength and reaction time.
复制标题
不再可能恢复的阈值跳闸持续时间与力量和反应时间相关。
DOI：
10.1016/s0021-9290(01)00005-7
复制
发表时间：
2001
影响因子：
2.4
通讯作者：
McMahon,TA
中科院分区：
文献类型：
--
作者：
Smeesters,C;Hayes,WC;McMahon,TA
研究了年轻人从日益严重的旅行中恢复的情况。我们的原假设是，在一项意志行走任务中测量的下肢力量、反应时间、行走时间、行走距离和行走速度，并不能解释阈值行走持续时间的显著差异，因为在阈值行走持续时间内，恢复不再可能。10名男性和11名女性（平均年龄分别为26.8岁和28.4岁）的旅行时间越来越长，直到无法单步康复为止。受试者无法单步恢复的平均阈值跳闸持续时间为681±169ms。随着下肢强度的增加和意志反应时间的减少，阈值行程时间显著增加（多元逐步线性回归：R2=0.52, p=0.001）。其他意志步参数和被试特征与阈值行程持续时间的大小无显著相关。这些结果表明，一些与绊倒有关的跌倒可能是由于反应时间较慢和/或下肢力量降低。
The recovery of young adults from trips of increasing severity was studied. Our null hypothesis was that lower extremity strength, and reaction time, step time, step distance and step velocity measured in a volitional stepping task would not explain a significant portion of the variance in the magnitude of the threshold trip duration for which recovery is no longer possible. Ten males and 11 females (average age 26.8 and 28.4 years old, respectively) were subjected to trips of increasing duration until recovery was no longer possible with a single step. The average threshold trip duration for which subjects were no longer able to recover with a single step was 681±169ms. The threshold trip duration significantly increased as lower extremity strength increased and volitional reaction time decreased (multiple stepwise linear regression: R2=0.52, p=0.001). The other volitional step parameters and the subject characteristics were not significantly associated with the magnitude of the threshold trip duration. These results suggest that some trip-related falls may be due to slower reaction times and/or reduced lower extremity strengths.
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