Cook S D, Kester M A, Brunet M E, Haddad R J
Clin Sports Med. 1985 Oct;4(4):619-26.
The running shoe provides shock absorption and motion control for the runner. The change in shock-absorption properties has been studied as a function of miles run. Different models of running shoes encompassing various manufacturers' models and price ranges were mechanically tested to simulate the repeated heel strikes of running. The energy absorbed by the shoes was determined from the area under the load deformation curve at various intervals to the equivalent of having run 500 miles. Shoes were also tested at similar intervals after having been worn by volunteers during normal training. A difference of approximately 33 per cent in the initial shock absorption was observed in the different shoe models tested. In general, the mechanically tested shoes retained approximately 75 per cent of their initial shock absorption capability after 50 miles and approximately 67 per cent after 100 to 150 miles. Between 250 and 500 miles, the shoes retained less than 60 per cent of their initial shock-absorption capacity. The shoes tested after having been worn during running by volunteers had similar but less severe degradation characteristics. These shoes tended to retain approximately 70 per cent of the initial shock absorption characteristics were apparent based upon either shoe price or manufacturer. In addition, shoes that exhibited superior initial shock absorption capability often had more rapid degradation characteristics.
跑鞋为跑步者提供减震和运动控制功能。减震性能的变化已被作为跑步里程数的函数进行研究。对涵盖各种制造商型号和价格范围的不同型号跑鞋进行了机械测试，以模拟跑步时反复的脚跟撞击。根据在相当于跑了500英里的不同时间间隔下负载变形曲线下的面积来确定鞋子吸收的能量。在志愿者正常训练期间穿着这些鞋子后，也在类似的时间间隔进行测试。在所测试的不同鞋型中，观察到初始减震性能有大约33%的差异。一般来说，经过机械测试的鞋子在跑50英里后保留了大约75%的初始减震能力，在跑100至150英里后保留了大约67%。在250至500英里之间，鞋子保留的初始减震能力不到60%。在志愿者跑步时穿着后进行测试的鞋子有类似但不太严重的降解特性。这些鞋子倾向于保留大约70%的初始减震特性，根据鞋子价格或制造商的不同并不明显。此外，表现出卓越初始减震能力的鞋子往往有更快的降解特性。
