Kim Eunkuk, Choi Hokyung, Cha Jung-Hoon, Park Jong-Chul, Kim Taegyu
Department of Physical Education, Korea National Sport University , Seoul, Korea.
Department of Community Sports, Korea National Sport University , Seoul, Korea.
J Sports Sci Med. 2017 Mar 1;16(1):137-146. eCollection 2017 Mar.
The aims of this study were to investigate the ankle position, the changes and persistence of ankle kinematics after neuromuscular training in athletes with chronic ankle instability (CAI). A total of 21 national women's field hockey players participated (CAI = 12, control = 9). Ankle position at heel strike (HS), midstance (MS), and toe touch (TT) in the frontal plane during walking, running and landing were measured using 3D motion analysis. A 6-week neuromuscular training program was undertaken by the CAI group. Measurements of kinematic data for both groups were measured at baseline and the changes in kinematic data for CAI group were measured at 6 and 24 weeks. The kinematic data at HS during walking and running demonstrated that the magnitude of the eversion in the CAI group (-5.00° and -4.21°) was less than in the control group (-13.45°and -9.62°). The kinematic data at MS also exhibited less ankle eversion in the CAI group (-9.36° and -8.18°) than in the control group (-18.52° and -15.88°). Ankle positions at TT during landing were comparable between groups. Following the 6-week training, the CAI participants demonstrated a less everted ankle at HS during walking and running (-1.77° and -1.76°) compared to the previous positions. They also showed less ankle eversion at MS (-5.14° and -4.19°). Ankle orientation at TT changed significantly to an inverted ankle position (from -0.26° to 4.11°). The ankle kinematics were restored back to the previous positions at 24 weeks except for landing. It appeared that athletes with unstable ankle had a relatively inverted ankle position, and that 6-week neuromuscular training had an immediate effect on changing ankle orientation toward a less everted direction. The changed ankle kinematics seemed to persist during landing but not during walking and running.
本研究的目的是调查慢性踝关节不稳（CAI）运动员在神经肌肉训练后踝关节的位置、踝关节运动学的变化及持续性。共有21名国家女子曲棍球运动员参与（CAI组 = 12名，对照组 = 9名）。使用三维运动分析测量行走、跑步和落地过程中足跟触地（HS）、支撑中期（MS）和足尖触地（TT）时踝关节在额状面的位置。CAI组进行了为期6周的神经肌肉训练计划。两组的运动学数据在基线时进行测量，CAI组的运动学数据变化在第6周和第24周进行测量。行走和跑步时HS的运动学数据表明，CAI组的外翻幅度（-5.00°和-4.21°）小于对照组（-13.45°和-9.62°）。MS时的运动学数据也显示，CAI组的踝关节外翻（-9.36°和-8.18°）小于对照组（-18.52°和-15.88°）。两组在落地时TT的踝关节位置相当。经过6周训练后，与之前的位置相比，CAI组参与者在行走和跑步时HS的踝关节外翻程度较小（-1.77°和-1.76°）。他们在MS时的踝关节外翻也较小（-5.14°和-4.19°）。TT时的踝关节方向显著改变为内翻位置（从-0.26°变为4.11°）。除落地外，24周时踝关节运动学恢复到之前的位置。似乎踝关节不稳定的运动员踝关节位置相对内翻，6周的神经肌肉训练对将踝关节方向改变为外翻程度较小的方向有即时效果。改变后的踝关节运动学在落地时似乎持续存在，但在行走和跑步时则不然。
