Abstract：
Force attenuation during landing requires coordinated motion of the ankle, knee, hip, and trunk, and strategies may differ between sexes. Sagittal plane coordination of the ankle/knee, knee/hip, and knee/trunk, and lower extremity and trunk kinematics and kinetics was compared throughout landing between 28 males and 28 females. Coordination was assessed with a modified vector coding technique and binning analysis. Total support moments (TSM), each joint\'s percent contribution, and timing of the TSM were compared. Females landed with less isolated knee flexion in the ankle/knee, knee/hip, and knee/trunk couplings, but more simultaneous ankle/knee flexion, less simultaneous knee flexion/hip extension, and more simultaneous trunk/knee flexion. Females landed with larger plantarflexion angles from 0-16% and smaller trunk flexion angles from 0-78%. In females, absolute TSM were larger from 0-6% and smaller from 42-100%, and normalized TSM were larger from 0-8% and 26-42%. Females had greater ankle contribution to the TSM from 14-15% and 29-35%, smaller absolute peak TSM, and the peak TSM occurred earlier. Females compensated for less isolated knee flexion with greater simultaneous ankle/knee flexion early in landing and knee/trunk flexion later in landing. Coordination and TSM differences may influence force attenuation strategies and have implications for knee injury disparity between sexes.
摘要：
着陆过程中的力衰减需要脚踝的协调运动，膝盖,臀部,和树干，和策略可能不同的性别。脚踝/膝盖的矢状平面协调，膝盖/臀部,和膝盖/躯干，在整个着陆过程中，比较了28名男性和28名女性的下肢和躯干运动学和动力学。用改进的矢量编码技术和分箱分析评估协调性。总支撑力矩(TSM),每个联合捐款的百分比，并对TSM的时间进行了比较。女性在脚踝/膝盖上有较少的孤立的膝盖屈曲，膝盖/臀部,和膝盖/躯干联轴器，但脚踝/膝盖同时屈曲更多，同时屈膝/髋关节伸展较少，和更多的同时躯干/膝盖屈曲。雌性以0-16％的较大足底弯曲角度着陆，而0-78％的较小躯干弯曲角度着陆。在女性中，绝对TSM从0-6%更大，从42-100%更小，和标准化的TSM从0-8%和26-42%更大。女性的脚踝对TSM的贡献更大，分别为14-15％和29-35％，较小的绝对峰TSM，和峰值TSM发生较早。女性在着陆早期补偿了较少的孤立性膝盖屈曲，同时增加了脚踝/膝盖屈曲，在着陆后期补偿了膝盖/躯干屈曲。协调性和TSM差异可能会影响力量衰减策略，并对两性之间的膝关节损伤差异产生影响。
