【摘要】：目的:理解標槍運動中前十字韌帶的損傷機制以及與前十字韌帶損傷相關的標槍技術。方法:受試者是一名高水平女子標槍運動員,她在健康狀態(tài)下完成前3次實驗。在最近一次的田徑大會期間進行了第4次實驗,這次試驗中她的左膝存在非外力引起的前十字韌帶損傷。我們采集到損傷和非損傷實驗中的三維運動學數(shù)據(jù)并從標槍生物力學數(shù)據(jù)庫中獲得52名男子和54名女子高水平標槍運動員的相關數(shù)據(jù)。結果:損傷和非損傷相比,在前25%的投擲階段后,受試者質心向前的速度更大,垂直方向的速度更小:投擲階段前21%的過程中,受試者左膝屈曲角度和角速度都更小,但左膝外翻和內(nèi)旋角度沒有明顯差異。在損傷實驗投擲階段30%時,攝影圖像中顯示出明顯的脛骨前移;受試者左腳觸地時,左膝屈曲角度和角速度以及在投擲階段中左膝最大屈曲角度與數(shù)據(jù)庫中52名男子和54名女子優(yōu)秀標槍運動員的數(shù)據(jù)沒有相關性。結論:研究中的前十字韌帶損傷發(fā)生在投擲階段的前30%,更可能是前25%。左腿膝關節(jié)屈曲角度小,導致硬著陸是損傷的主要原因。標槍運動員應彎曲膝關節(jié)進行軟著陸,這樣能幫助他們預防前十字韌帶損傷而不影響運動表現(xiàn)。
[Abstract]:Aim: to understand the injury mechanism of anterior cruciate ligament in javelin movement and javelin technique related to anterior cruciate ligament injury. Methods: the subjects were a high-level female javelin athlete who completed the first three experiments in a healthy state. A fourth experiment was conducted during a recent track and field convention in which her left knee suffered a nonforce injury to the anterior cruciate ligament. We collected 3D kinematics data from injury and non-injury experiments and obtained data from the javelin biomechanics database for 52 men and 54 women high level javelin athletes. Results: after the first 25% of the throwing phase, the centroid of mass forward was faster and the velocity of vertical direction was lower than that of the non-injury group, and the angle and angular velocity of the left knee flexion angle and angular velocity were smaller in 21% of the first 21% of the throwing phase. But there was no significant difference between the left genu valgus and the rotation angle. During the throwing phase of the injury experiment, the photographic images showed a significant tibia forward movement; when the subjects touched the ground with their left feet, The angle and angular velocity of left knee flexion and the maximum flexion angle of left knee in throwing stage were not correlated with the data of 52 male and 54 female elite javelin athletes in the database. Conclusion: the anterior cruciate ligament injury in the study occurred in the first 30 th of the throwing stage, more likely in the first 25 th. The knee joint flexion angle of left leg is small, leading to hard landing is the main cause of injury. Javelin athletes should bend their knees for a soft landing to help them prevent anterior cruciate ligament injury without affecting their performance.
【作者單位】： Division
【分類號】：R873

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