Maclean Christopher L, Davis Irene S, Hamill Joseph
Biomechanics Laboratory, Dept of Kinesiology, University of Massachusetts, Amherst, MA, USA.
J Appl Biomech. 2009 Feb;25(1):54-63. doi: 10.1123/jab.25.1.54.
The purpose of this study was to analyze the influence of varying running shoe midsole composition on lower extremity dynamics with and without a custom foot orthotic intervention. Three-dimensional dynamics were collected on 12 female runners who had completed 6 weeks of custom foot orthotic therapy. Participants completed running trials in 3 running shoe midsole conditions-with and without a custom foot orthotic intervention. Results from the current study revealed that only maximum rearfoot eversion velocity was influenced by the midsole durometer of the shoe. Maximum rearfoot eversion velocity was significantly decreased for the hard shoe compared with the soft shoe. However, the orthotic intervention in the footwear led to significant decreases in several dynamic variables. The results suggest that the major component influencing the rearfoot dynamics was the orthotic device and not the shoe composition. In addition, data suggest that the foot orthoses appear to compensate for the lesser shoe stability enabling it to function in a way similar to that of a shoe of greater stability.
本研究的目的是分析不同跑鞋中底成分在有无定制足部矫形器干预的情况下对下肢动力学的影响。对12名完成了6周定制足部矫形器治疗的女性跑步者进行了三维动力学数据采集。参与者在3种跑鞋中底条件下完成跑步试验，包括有无定制足部矫形器干预。当前研究结果显示，仅最大后足外翻速度受鞋子中底硬度影响。与软底鞋相比，硬底鞋的最大后足外翻速度显著降低。然而，鞋类中的矫形器干预导致几个动力学变量显著降低。结果表明，影响后足动力学的主要因素是矫形器装置而非鞋子成分。此外，数据表明足部矫形器似乎补偿了鞋子稳定性较差的问题，使其能够以类似于稳定性更高的鞋子的方式发挥作用。
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