West T, Ng L, Campbell A
School of Physiotherapy and Exercise Science, Curtin Health Innovation Research Institute, Curtin University, Perth, Australia.
Scand J Med Sci Sports. 2014 Dec;24(6):958-63. doi: 10.1111/sms.12130. Epub 2013 Sep 30.
The purpose of this study was to examine the effects of ankle bracing on knee kinetics and kinematics during volleyball tasks. Fifteen healthy, elite, female volleyball players performed a series of straight-line and lateral volleyball tasks with no brace and when wearing an ankle brace. A 14-camera Vicon motion analysis system and AMTI force plate were used to capture the kinetic and kinematic data. Knee range of motion, peak knee anterior-posterior and medial-lateral shear forces, and peak ground reaction forces that occurred between initial contact with the force plate and toe off were compared using paired sample t-tests between the braced and non-braced conditions (P < 0.05). The results revealed no significant effect of bracing on knee kinematics or ground reaction forces during any task or on knee kinetics during the straight-line movement volleyball tasks. However, ankle bracing was demonstrated to reduce knee lateral shear forces during all of the lateral movement volleyball tasks. Wearing the Active Ankle T2 brace will not impact knee joint range of motion and may in fact reduce shear loading to the knee joint in volleyball players.
本研究的目的是考察在排球运动任务中，踝关节支具对膝关节动力学和运动学的影响。15名健康、优秀的女性排球运动员在不佩戴支具和佩戴踝关节支具的情况下，完成了一系列直线和侧向排球运动任务。使用14台摄像机的Vicon运动分析系统和AMTI测力台采集动力学和运动学数据。采用配对样本t检验比较了佩戴支具和不佩戴支具两种情况下，从与测力台初始接触到离地期间的膝关节活动范围、膝关节前后和内外侧剪切力峰值以及地面反作用力峰值（P < 0.05）。结果显示，在任何任务中，支具对膝关节运动学或地面反作用力均无显著影响，在直线移动排球任务中对膝关节动力学也无显著影响。然而，在所有侧向移动排球任务中，踝关节支具均能降低膝关节外侧剪切力。佩戴Active Ankle T2支具不会影响排球运动员的膝关节活动范围，实际上可能会减少膝关节的剪切负荷。
