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首页> 外文会议>International Symposium on Biomechanics in Sports vol.2; 20050822-27; Beijing(CN) >PERFORMANCE SENSITIVITY TO PERTURBATIONS IN ACTIVATION TIMING
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PERFORMANCE SENSITIVITY TO PERTURBATIONS IN ACTIVATION TIMING

机译：激活时序中对扰动的性能敏感性

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摘要

This study investigated the sensitivity of optimum jumping performances to perturbations in activation timing. A planar eight-segment computer simulation model was used to simulate the takeoff phase in a high jumping performance. The model was evaluated and subsequently used to produce an optimum performance with a jump height of 2.63 m. The muscle activation onset timings at the knee were then varied by + 5 ms and the effect on the simulated performance was determined. By simply varying the knee activation onset timings the performance did not change in terms of jump height, but the simulations included penalties which indicated that anatomical constraints had been violated. Re-optimisation with a measure of robustness included resulted in an optimum simulated jump of 2.32 m with no penalties which was unaffected by 5 ms perturbations.
机译：这项研究调查了最佳跳跃性能对激活时机扰动的敏感性。平面八段计算机仿真模型用于模拟高跳跃性能下的起飞阶段。对模型进行了评估，随后用于产生最佳性能，其跳跃高度为2.63 m。然后将膝盖处的肌肉激活开始时间改变+5 ms，并确定对模拟性能的影响。通过简单地改变膝盖激活开始时间，就跳高而言，性能并没有改变，但是模拟包括惩罚，表明违反了解剖学约束。包括鲁棒性在内的重新优化可产生2.32 m的最佳模拟跳跃，且不受5 ms扰动的影响。

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