Biomechanics of reactions to impending falls.
Biomechanics of reactions to impending falls.
复制标题
对即将发生的跌倒反应的生物力学。
DOI：
10.1016/0021-9290(88)90222-9
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发表时间：
1988
影响因子：
2.4
通讯作者：
Schultz,AB
中科院分区：
文献类型：
--
作者：
Romick-Allen,R;Schultz,AB
11个年轻的成年男性，最初站立，支持表面向前加速度为0.18克的反应进行了研究。为了响应即将到来的福尔斯这一刺激启动，身体部分的运动和肌电活动在六块肌肉进行了测量。然后将这些测量值输入到9或12节段的全身生物力学模型中，计算出产生运动所需的反作用关节扭矩，平均相对关节旋转高达92.8°，计算出的相对关节角加速度高达29.7 rad s−2。监测的六块肌肉的平均肌电信号潜伏期范围从踝关节的135 ms到肩部的176 ms，中间关节的值为中间值。计算的最大关节扭矩的平均值范围为踝关节70 Nm，膝关节82 Nm，髋关节73 Nm，肩部19 Nm。
Responses of 11 young adult males, initially standing, to support surface forward accelerations of 0.18 g were investigated. In response to the impending falls this stimulus initiated, body segment motions and myoelectric activities in six muscles were measured. These measurements were then input to 9 or 12 segment whole body biomechanical models and the reaction joint torques needed to produce the motions were calculated.Mean relative joint rotations were as large as 92.8° and calculated relative joint angular accelerations as large as 29.7 rad s−2. Mean myoelectric signal latencies in the six muscles monitored ranged from 135 ms at the ankles to 176 ms at the shoulders with intermediate values at intermediate joints. Mean values of calculated maximum joint torques ranged to 70 Nm at the ankles, 82 Nm at the knees, 73 Nm at the hips, and 19 Nm at the shoulders.