一例标枪投掷中发生前十字韧带损伤的生物力学特点（英文）
发布时间：2018-08-19 15:27
【摘要】：目的:理解标枪运动中前十字韧带的损伤机制以及与前十字韧带损伤相关的标枪技术。方法:受试者是一名高水平女子标枪运动员,她在健康状态下完成前3次实验。在最近一次的田径大会期间进行了第4次实验,这次试验中她的左膝存在非外力引起的前十字韧带损伤。我们采集到损伤和非损伤实验中的三维运动学数据并从标枪生物力学数据库中获得52名男子和54名女子高水平标枪运动员的相关数据。结果:损伤和非损伤相比,在前25%的投掷阶段后,受试者质心向前的速度更大,垂直方向的速度更小:投掷阶段前21%的过程中,受试者左膝屈曲角度和角速度都更小,但左膝外翻和内旋角度没有明显差异。在损伤实验投掷阶段30%时,摄影图像中显示出明显的胫骨前移;受试者左脚触地时,左膝屈曲角度和角速度以及在投掷阶段中左膝最大屈曲角度与数据库中52名男子和54名女子优秀标枪运动员的数据没有相关性。结论:研究中的前十字韧带损伤发生在投掷阶段的前30%,更可能是前25%。左腿膝关节屈曲角度小,导致硬着陆是损伤的主要原因。标枪运动员应弯曲膝关节进行软着陆,这样能帮助他们预防前十字韧带损伤而不影响运动表现。
[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.
【作者单位】： Division
【分类号】：R873
[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.
【作者单位】： Division
【分类号】：R873
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