Ait-Haddou R, Binding P, Herzog W
Human Performance Laboratory, Faculty of Kinesiology, University of Calgary, Alberta, Canada.
J Biomech. 2000 Sep;33(9):1105-11. doi: 10.1016/s0021-9290(00)00085-3.
It is well known that static, non-linear minimization of the sum of the stress in muscles to a certain power cannot predict cocontraction of pairs of one-joint antagonistic muscles. In this report, we prove that for a single joint either all agonistic muscles cocontract or all are silent. For two-joint muscles, we show that lengthening and shortening of muscles corresponds closely to zero force and non-zero force states, respectively. This gives a new physiological interpretation of situations in which cocontraction of pairs of two-joint antagonistic muscles is predicted by these static non-linear optimization approaches.
众所周知，将肌肉应力之和以某一幂次进行静态、非线性最小化，无法预测单关节拮抗肌对的共同收缩。在本报告中，我们证明对于单个关节，要么所有主动肌共同收缩，要么所有主动肌均无活动。对于双关节肌肉，我们表明肌肉的拉长和缩短分别与零力状态和非零力状态密切对应。这为这些静态非线性优化方法预测双关节拮抗肌对共同收缩的情况提供了一种新的生理学解释。
