MODULATION OF LIMB DYNAMICS IN THE SWING PHASE OF LOCOMOTION
MODULATION OF LIMB DYNAMICS IN THE SWING PHASE OF LOCOMOTION
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DOI：
10.1016/0021-9290(85)90044-2
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发表时间：
1985-01-01
影响因子：
2.4
通讯作者：
ZERNICKE, RF
中科院分区：
文献类型：
--
作者：
HOY, MG;ZERNICKE, RF
提出了一种猫（Felis卡图斯）后肢摆动运动阶段的动力学定量方法，该方法采用腿和爪的双连杆刚体模型，突出了各节段之间的动力学相互作用。全面确定了猫段参数的动态分析和回归方程，制定了预测任何可比的猫的惯性参数。调制在肌肉和非肌肉组件的膝关节和踝关节的时刻进行了检查，在2个跑步机的速度使用3步态：步伐样行走和小跑样行走，在1.0 ms-1和奔马，在2.1 ms-1。肌肉和节段的相互作用的时刻显着影响摆动过程中的肢体轨迹。一些力矩分量大于在疾驰比步行，但净关节最大值之间的速度并不显着。在相同的速度下，步速行走的力矩幅度通常大于快步行走。一般来说，在整个步态中，净力矩和肌肉力矩与远端关节运动方向同相，而这些力矩与远端关节运动方向异相。节段间的动力学调制不完全由运动速度，但互动运动也受到步态模式的显着影响。
A method was presented for quantifying cat (Felis catus) hind limb dynamics during swing phase of locomotion using a 2-link rigid body model of leg and paw, which highlighted the dynamic interactions between segments. Comprehensive determination was made of cat segment parameters necessary for dynamic analysis and regression equations were formulated to predict the inertial parameters of any comparable cat. Modulations in muscle and nonmuscle components of knee and ankle joint moments were examined at 2 treadmill speeds using 3 gaits: pace-like walk and trot-like walk, at 1.0 ms-1 and gallop, at 2.1 ms-1. Muscle and segment interactive moments significantly effected limb trajectories during swing. Some moment components were greater in galloping than in walking, but net joint maxima were not significantly between speeds. Moment magnitudes typically were greater for pace-like walking than for trot-like walking at the same speed. Generally, across gaits, the net and muscle moments were in phase with the direction of distal joint motion and these same moments were out in phase with proxmal joint motion. Intersegmental dynamics were not modulated exclusively by speed of locomotion, but interactive movement were also influenced significantly by gait mode.