The evaluation of the cushioning properties in sport shoes on the basis of human's adaptation by muscle turning.

本研究的目的是在人体肌肉调节适应的基础上对运动鞋的缓冲性能进行评价。在这项研究中，肌肉调整是估计与运动学和肌电图（EMG）分析。然后，在跑步和跳跃过程中，研究肌肉调节与腿部僵硬之间的关系。考虑了鞋材对肌肉调节和腿刚度的影响。在“穿鞋对跳远时下肢运动控制的影响”的研究中，分析了赤脚和穿鞋跳远时下肢的运动学、动力学参数和肌电图。结果表明，赤足和穿鞋条件下的跳跃运动在踝关节僵硬度和足跟动作方面存在差异。关节刚度定量地反映了在这些条件下运动的变化。在“跑步过程中肌肉疲劳的估计及其对下肢运动控制的影响”的研究中，开发了肌电图实时分析系统，对跑步机等速跑步过程中肌肉疲劳和运动变化进行了检测。结果，在跑步过程中，肌肉疲劳是可测量的。在“跑步机运动过程中相对运动负荷与踝关节运动的关系”的研究中，考察了不同相对跑步速度下踝关节运动的特征，并考虑了通风阈值（VT）和运动鞋性能评价的测试速度。结果表明，以35%VT以上的速度评价运动鞋的性能是适宜的。在“鞋子材料的缓冲性能对下肢关节运动和肌肉活动的影响”的研究中，分析了跳跃过程中肌肉活动、关节做功和关节刚度对材料能量吸收变化的影响。结果表明，在这些实验条件下，鞋子材料的缓冲性能对肌肉活动、关节工作和刚度没有影响。少

The aim of this research was the evaluation of the cushioning properties in sport shoes on the basis of human's adaptation by muscle tuning. In this research, muscle tuning was estimated with kinematical and electromyography (EMG) analysis. Then, the relationships between muscle tuning and leg stiffness during running and jumping were examined. The influence of the shoes materials on muscle tuning and leg stiffness was considered.In the study of "Influence of shoes on motion control of lower extremity during jumping", the kinematical and kinetic parameters and EMG were analyzed on conditions of barefoot or shoed during jumping. In the result, the differences of jumping motion between barefoot and shoed conditions were observed in ankle joint stiffness and work at heel strike. The joint stiffness represented the change of motion under these conditions quantitatively.In the study of "The estimation of muscle fatigue and the effect on motion control in lower extremity during running", the … More real-time analysis system on EMG was developed, and muscle fatigue and the change of motion were examined during treadmill running with constant speed. In the result, muscle fatigue was measurable during running immediately.In the study of "Relationship between relative exercise loads and ankle joint motion during treadmill running", the characteristics of ankle joint motion were examined at various relative running speeds with the ventilation threshold (VT) and testing speed for evaluating the properties in sport shoes was considered. In the result, the speed above 35%VT was appropriate to evaluation of the properties in sports shoes.In the study of "Effects of cushioning properties in shoes materials on lower extremity joint motion and muscle activities", muscle activities, joint work and joint stiffness were analyzed during jumping on the materials varied energy absorption. In the result, there was no evidence that the cushioning properties in shoes materials influenced on muscle activities, joint work and stiffness under these experimental conditions. Less