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首页> 外文期刊>Journal of Biomechanics >Chronic ankle instability patients exhibit higher variability in lower extremity joint-coupling variability during drop vertical jumps
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Chronic ankle instability patients exhibit higher variability in lower extremity joint-coupling variability during drop vertical jumps

机译：慢性脚踝不稳定患者在落下垂直跳跃期间，在下肢关节耦合变异性上表现出更高的变化

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摘要

Chronic ankle instability (CAI) has been associated with biomechanical alterations during landing tasks. While joint coupling differences have been reported during gait in patients with CAI, there is no known research assessing joint coupling during a drop-vertical jumping (DVJ). Joint coupling variability measure may provide information on the sensorimotor health of these patients. The purpose of this study was to compare lower extremity joint coupling variability during a DVJ between patients with CAI and controls. Twenty-eight young, active individuals (CAI:n = 14, Control:n = 14) participated in the study. A 3D motion capture system was used to collect kinematics during 15 drop-vertical jump trials. A vector coding analysis was used to assess the variability in the following joint couples: knee sagittal-ankle frontal, knee sagittal-ankle sagittal, hip frontal-ankle frontal, and hip frontal-ankle sagittal. The CAI group had higher joint coupling variability in hip frontal-ankle sagittal, knee sagittal-ankle frontal and knee sagittal-ankle sagittal planes both prior to and following ground contact during the drop vertical jumps. These changes indicate potential adaptations to the constraint of CAI and the task of the DVJ. Higher variability may reflect an attempt by the subjects to explore alternate movement strategies or reflect poor sensorimotor control strategies. Clinicians should consider the challenges of DVJ during rehabilitation as they create a unique task constraint. (C) 2019 Elsevier Ltd. All rights reserved.
机译：慢性脚踝不稳定性（CAI）在着陆任务期间与生物力学改建有关。虽然在CAI患者的步态期间报道了联合偶联差异，但在滴落垂直跳跃期间没有已知的研究评估关节耦合（DVJ）。联合耦合可变性措施可以提供有关这些患者的传感器健康的信息。本研究的目的是在CAI和对照组之间的DVJ期间比较下肢关节耦合变异性。二十八名年轻，活跃的个体（CAI：N = 14，控制：N = 14）参加了该研究。 3D运动捕获系统用于在15次下降垂直跳转试验期间收集运动学。矢量编码分析用于评估以下关节夫妇的可变性：膝盖矢状 - 脚踝前置，膝盖矢状 - 脚踝矢状，臀部前脚踝额头和臀部前脚踝矢状。 CAI组在落后跳跃期间在接地垂直之前和之后的接地接触之前和之后的髋部前脚踝矢状，膝关节踝锥形脚踝踝关节平面较高。这些变化表示对CAI的约束和DVJ的任务的潜在适应。更高的可变性可能反映了受试者的尝试，以探索备用运动策略或反映差的感觉运动控制策略。临床医生应在康复期间考虑DVJ的挑战，因为它们创造了一个独特的任务约束。 （c）2019年elestvier有限公司保留所有权利。

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