Tsouknidas A, Pantazopoulos M, Sagris D, Fasnakis D, Maropoulos S, Arabatzi F, Michailidis N
Department of Mechanical Engineering, Aristotle University of Thessaloniki, 54 124 Thessaloniki, Greece.
Department of Mechanical Engineering, Technical University of Central Macedonia, Terma Magnisias, 62 124 Serres, Greece.
Appl Bionics Biomech. 2017;2017:7136238. doi: 10.1155/2017/7136238. Epub 2017 Mar 29.
Long-distance running is known to induce joint overloading and elevate cytokine levels, which are the hallmarks for a variety of running-related injuries. To address this, footwear systems incorporate cushioning midsoles to mitigate injurious mechanical loading. The aim of this study was to evaluate the effect of athlete body mass on the cushioning capacity of technical footwear. An artificial heel was prototyped to fit the impact pattern of a heel-strike runner and used to measure shock attenuation by an automated drop test. Impact mass and velocity were modulated to simulate runners of various body mass and speeds. The investigation provided refined insight on running-induced impact transmission to the human body. The examined midsole system was optimized around anthropometric data corresponding to an average (normal) body mass. The results suggest that although modern footwear is capable of attenuating the shock waves occurring during foot strike, improper shoe selection could expose an athlete to high levels of peak stress that could provoke an abnormal cartilage response. The selection of a weight-specific cushioning system could provide optimum protection and could thus prolong the duration of physical exercise beneficial to maintaining a simulated immune system.
众所周知，长跑会导致关节负荷过重并提高细胞因子水平，而这些都是各种与跑步相关损伤的标志。为了解决这个问题，鞋类系统采用了缓冲中底来减轻有害的机械负荷。本研究的目的是评估运动员体重对专业运动鞋缓冲能力的影响。制作了一个人造鞋跟原型，以适应脚跟落地跑步者的冲击模式，并通过自动落锤试验来测量减震效果。调节冲击质量和速度以模拟不同体重和速度的跑步者。该研究为跑步引起的冲击向人体的传递提供了更精确的见解。所研究的中底系统是围绕对应于平均（正常）体重的人体测量数据进行优化的。结果表明，尽管现代鞋类能够减轻足部着地时产生的冲击波，但选择不当的鞋子可能会使运动员承受高水平的峰值应力，从而引发软骨异常反应。选择适合体重的缓冲系统可以提供最佳保护，从而可以延长有益于维持模拟免疫系统的体育锻炼时间。
