Effects of the length ratio between the contractile element and the series elastic element on an explosive muscular performance
Effects of the length ratio between the contractile element and the series elastic element on an explosive muscular performance
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DOI：
10.1016/s1050-6411(03)00085-3
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发表时间：
2004-04-01
影响因子：
2.5
通讯作者：
Fukashiro, S
中科院分区：
文献类型：
--
作者：
Nagano, A;Komura, T;Fukashiro, S
研究了收缩元素(CE)和串联弹性元素(SEE)之间的长度比对肌腱复合体在拉伸-缩短循环中行为的影响。建立了山型肌腱复合体的计算机仿真模型。将CE的近端固定在重力场中的一点上，将无质量的支撑物固定在SEE的远端。支撑物体上举行了一次弥撒。最初，肌腱复合体固定在一定的长度，CE被100%激活。在这个过程中，行政长官收缩的程度与扩大的幅度一样大。此后，支撑物被释放，这导致肌腱复合体推动质量上升，模拟拉伸-缩短周期。CE和SEE之间的长度比、质量大小和CE的初始长度依次变化。结果发现，当质量较小时，SEE较长，而当质量较大时，SEE较短，从而获得较高的性能。(C)2003爱思唯尔有限公司。保留所有权利。
Effects of the length ratio between the contractile element (CE) and the series elastic element (SEE) on the behavior of the muscle tendon complex were investigated during stretch-shortening cycles. A computer simulation model of the Hill-type muscle tendon complex Was constructed. The proximal end of the CE was affixed to a point in the gravitational field, and a massless supporting object was affixed to the distal end of the SEE. A mass was held on the supporting object. Initially, the muscle tendon complex,was fixed at a certain length, and the CE was activated at 100%. Through this process, the CE contracted as much as the SEE was stretched. Thereafter, the supporting object was released, which caused the muscle tendon complex to propel the mass upward, simulating a stretch-shortening cycle. The length ratio between the CE and the SEE, the size of the mass and the initial length of the CE were sequentially changed. As a result, it was found that a higher performance is obtained with a longer SEE when the mass is small, while with a shorter SEE when the mass is large. (C) 2003 Elsevier Ltd. All rights reserved.