Faculty of Liberal Arts and Sciences, Chukyo University, Nagoya-shi, Aichi, Japan.
Department of Sports Medicine, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan.
Res Sports Med. 2021 Nov-Dec;29(6):547-556. doi: 10.1080/15438627.2021.1917407. Epub 2021 Apr 20.
This study aimed to examine lower limb kinematics during a side-cutting task in male collegiate soccer athletes with severe ankle laxity. Forty-seven participants with a history of ankle sprains and perceived ankle instability were categorized into non-laxity (n = 17), laxity (n = 19), and severe laxity (n = 11) groups using stress radiography tests. Three-dimensional kinematic data during the stance phase of a 45° side-cutting task were analysed. The frontal plane kinematics of the knee significantly differed between the three groups (p < 0.05). The severe laxity group exhibited a greater abduction angle than the non-laxity group (p < 0.05). The horizontal and sagittal plane kinematics of the rearfoot differed between the three groups during the end of the stance phase (p < 0.05). Our data suggest that collegiate soccer athletes with both perceived ankle instability and severe ankle laxity exhibit greater knee abduction movement during a 45° side-cutting task compared to those with only perceived ankle instability.
本研究旨在探讨踝关节松弛度较大的男性大学生足球运动员在侧向切割任务中的下肢运动学。47 名有踝关节扭伤和踝关节不稳定感病史的参与者根据应力射线照相测试结果分为非松弛组（n=17）、松弛组（n=19）和严重松弛组（n=11）。分析了 45°侧向切割任务支撑相期间的三维运动学数据。三组间膝关节额状面运动学有显著差异（p<0.05）。严重松弛组的外展角度大于非松弛组（p<0.05）。在支撑相末期，三组间后足的水平和矢状面运动学也存在差异（p<0.05）。我们的数据表明，与仅有踝关节不稳定感的运动员相比，同时具有踝关节不稳定感和严重踝关节松弛的大学生足球运动员在进行 45°侧向切割任务时，膝关节的外展运动幅度更大。
