Powell Douglas W, Williams D S Blaise, Butler Robert J
Human Performance Laboratory, School of Education, Health, and Human Performance, Fairmont State University, Fairmont, WV, USA.
J Am Podiatr Med Assoc. 2013 Mar-Apr;103(2):99-105. doi: 10.7547/1030099.
Malalignment and dysfunction of the foot have been associated with an increased propensity for overuse and traumatic injury in athletes. Several multisegment foot models have been developed to investigate motions in the foot. However, it remains unknown whether the kinematics measured by different multisegment foot models are equivocal. The purpose of the present study is to examine the efficacy of two multisegment foot models in tracking aberrant foot function.
Ten high-arched and ten low-arched female athletes walked and ran while ground reaction forces and three-dimensional kinematics were tracked using the Leardini and Oxford multisegment foot models. Ground reaction forces and joint angles were calculated with Visual 3D (C-Motion Inc, Germantown, MD). Repeated-measures analyses of variance were used to analyze peak eversion, time to peak eversion, and eversion excursions.
The Leardini model was more sensitive to differences in peak eversion angles than the Oxford model. However, the Oxford model detected differences in eversion excursion values that the Leardini model did not detect.
Although both models found differences in frontal plane motion between high- and low-arched athletes, the Leardini multisegment foot model is suggested to be more appropriate as it directly tracks frontal plane midfoot motion during dynamic motion.
足部排列不齐和功能障碍与运动员过度使用和创伤性损伤的倾向增加有关。已经开发了几种多节段足部模型来研究足部的运动。然而，不同的多节段足部模型所测量的运动学是否存在差异仍不清楚。本研究的目的是检验两种多节段足部模型在追踪异常足部功能方面的有效性。
10名高弓足和10名低弓足女性运动员行走和跑步时，使用莱迪尼（Leardini）和牛津多节段足部模型追踪地面反作用力和三维运动学。使用Visual 3D（C-Motion公司，马里兰州日耳曼敦）计算地面反作用力和关节角度。采用重复测量方差分析来分析峰值外翻、达到峰值外翻的时间和外翻幅度。
莱迪尼模型比牛津模型对峰值外翻角度的差异更敏感。然而，牛津模型检测到了莱迪尼模型未检测到的外翻幅度值的差异。
尽管两种模型都发现了高弓足和低弓足运动员在额面运动上的差异，但建议莱迪尼多节段足部模型更合适，因为它能在动态运动中直接追踪中足在额面的运动。
