Evaluating the Coupling Between Foot Pronation and Tibial Internal Rotation Continuously Using Vector Coding
Evaluating the Coupling Between Foot Pronation and Tibial Internal Rotation Continuously Using Vector Coding
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DOI：
10.1123/jab.2014-0067
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发表时间：
2015-04-01
影响因子：
1.4
通讯作者：
Hamill, Joseph
中科院分区：
文献类型：
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作者：
Rodrigues, Pedro;Chang, Ryan;Hamill, Joseph
过度旋前由于其与胫骨内旋(TIR)的耦合，已被认为是膝前痛(AKP)的危险因素。传统上，这种耦合被表示为站立时发生的外翻运动范围和TIR运动范围(EV/TIR)之间的比率。目前，这项技术还没有被用于评估特定的伤害或性行为的影响。此外，EV/TIR无法检测整个站姿中发生的耦合变化。因此，本研究的目的是使用EV/TIR比率来比较有无AKP的跑步者(n=19)和无AKP跑步者(n=17)以及跨性别跑步者的外翻和TIR之间的耦合，并更连续地使用矢量编码。当使用向量编码时，AKP跑步者(34%至38%站姿)的耦合差异显著，AKP跑步者表现出相对更多的TIR比外翻。同样，性别之间也有显著差异(14%-25%和36%-47%)，男性跑步者使用近端到远端策略从负荷协调模式过渡到推进协调模式，而女性跑步者使用远端到近端策略。只有在使用诸如向量编码之类的连续技术评估这种耦合关系时，才能检测到这些差异。
Excessive pronation, because of its coupling with tibial internal rotation (TIR), has been implicated as a risk factor in the development of anterior knee pain (AKP). Traditionally, this coupling has been expressed as a ratio between the eversion range of motion and the TIR range of motion (Ev/TIR) that occurs during stance. Currently, this technique has not been used to evaluate specific injuries or the effects of sex. In addition, Ev/TIR is incapable of detecting coupling changes that occur throughout stance. Therefore, the purpose of this study was to compare the coupling between eversion and TIR in runners with (n = 19) and without AKP (n = 17) and across sex using the Ev/TIR ratio, and more continuously using vector coding. When using vector coding, significant coupling differences were noted in runners with AKP (34% to 38% stance), with runners with AKP showing relatively more TIR than eversion. Similarly significant differences were noted across sex (14%-25% and 36%-47% stance), with males transitioning from a loading to propulsive coordination pattern using a proximal to distal strategy, and female runners using a distal to proximal strategy. These differences were only detected when evaluating this coupling relationship using a continuous technique such as vector coding.