Domire Zachary J, Challis John H
Biomechanics Laboratory, The Pennsylvania State University, PA 16802, USA.
Comput Methods Biomech Biomed Engin. 2007 Oct;10(5):337-41. doi: 10.1080/10255840701379562.
With increasing computer power, computer simulation of human movement has become a popular research tool. However, time to complete simulations can still be long even on powerful computers. One possibility for reducing simulation time, with models of musculo-skeletal system, is to simulate the muscle using a rigid tendon rather than the more realistic compliant tendon. This study examines the effect of tendon elasticity on muscle force output under different dynamic conditions. A single muscle, point mass model was used and simulations were performed varying the mass, the tendon length, the initial position, and the task. For simulations for relatively slow motion, as experienced for example in upper limb reaching motions or rising from a chair, tendon properties had little influence on muscle force, in contrast simulations of an explosive task similar to jumping or throwing tendon had a much larger effect.
随着计算机性能的提升，人体运动的计算机模拟已成为一种流行的研究工具。然而，即便使用功能强大的计算机，完成模拟所需的时间仍然可能很长。对于肌肉骨骼系统模型而言，减少模拟时间的一种可能性是使用刚性肌腱而非更符合实际的柔性肌腱来模拟肌肉。本研究考察了在不同动态条件下肌腱弹性对肌肉力量输出的影响。采用了单肌肉质点模型，并通过改变质量、肌腱长度、初始位置和任务进行模拟。对于诸如上肢伸展运动或从椅子上起身等相对缓慢运动的模拟，肌腱特性对肌肉力量影响较小；相比之下，类似于跳跃或投掷等爆发性任务的模拟中，肌腱的影响要大得多。
