Caulfield B M, Garrett M
Clinical Movement Analysis Laboratory, University College Dublin School of Physiotherapy, Mater Hospital, Dublin, Ireland.
Int J Sports Med. 2002 Jan;23(1):64-8. doi: 10.1055/s-2002-19272.
The aim of this study was to investigate motor control in subjects with functional instability of the ankle joint. This was achieved by analysing patterns of lower extremity motion prior to and immediately following landing during single leg jumping in subjects with functional instability of the ankle. Fourteen subjects with unilateral functional instability and 10 healthy control subjects performed single leg jumps from a 40 cm height whilst angular displacement of their ankle and knee joints were recorded. Subjects with functional instability demonstrated significantly greater ankle dorsiflexion over the period encompassing 10 ms pre landing to 20 ms post landing (p < 0.05). They also exhibited a significantly greater level of knee flexion than controls over the period from 20 ms pre landing to 60 ms post landing (p < 0.05). The timing of these significant differences leads us to conclude that they do not arise as a result of reflexively mediated peripheral events following landing.
本研究的目的是调查踝关节功能不稳定受试者的运动控制情况。这是通过分析踝关节功能不稳定受试者单腿跳跃着地前及着地后即刻的下肢运动模式来实现的。14名单侧功能不稳定受试者和10名健康对照受试者从40厘米高处进行单腿跳跃，同时记录其踝关节和膝关节的角位移。功能不稳定受试者在着地前10毫秒至着地后20毫秒期间表现出明显更大的踝关节背屈（p < 0.05）。在着地前20毫秒至着地后60毫秒期间，他们的膝关节屈曲程度也明显高于对照组（p < 0.05）。这些显著差异出现的时间使我们得出结论，它们并非着地后反射介导的外周事件所致。
