CAJ | 학술논문

目的：通过对我国优秀女子短跑运动员蒋兰短跑的生物力学分析，为教练员和运动员提高女子短跑训练效果提供参考。方法：采用视频资料法及运动解析法，计算下肢运动学数据，对备战第12届全运会中所测数据进行横向和纵向比较。结果：前后比较，蒋兰100 m步频从4.64 step/s增至4.69 step/s，而步长从1.82 m增加到1.85 m；200 m步频从4.42 step/s增至4.48 step/s，步长从1.89 m提高到1.91 m。在途中跑下肢着地瞬间，髋关节角度明显减小，而膝关节和踝关节则无明显变化(P>0.05)。结论：通过专项力量与技术动作的训练与改进，步长增加的同时，步频也增加；步长的改变是人体跑动过程的综合性体现，而非单关节力量或运动结构的变化；步态参数变异性程度可能大于步长改变所带来的差异。
목적：통과대아국우수녀자단포운동원장란단포적생물역학분석，위교련원화운동원제고녀자단포훈련효과제공삼고。방법：채용시빈자료법급운동해석법，계산하지운동학수거，대비전제12계전운회중소측수거진행횡향화종향비교。결과：전후비교，장란100 m보빈종4.64 step/s증지4.69 step/s，이보장종1.82 m증가도1.85 m；200 m보빈종4.42 step/s증지4.48 step/s，보장종1.89 m제고도1.91 m。재도중포하지착지순간，관관절각도명현감소，이슬관절화과관절칙무명현변화(P>0.05)。결론：통과전항역량여기술동작적훈련여개진，보장증가적동시，보빈야증가；보장적개변시인체포동과정적종합성체현，이비단관절역량혹운동결구적변화；보태삼수변이성정도가능대우보장개변소대래적차이。
Objective: The aim of this study is to provide reference for coaches and athletes to improve the training effect of women sprinters through the biomechanical analysis of Jiang Lan, a Chinese elite woman sprinter. Method: The lower extremity kinematic data obtained by means of video data and motion analysis were compared with those collected in the preparation for the National Games horizontally and longitudinal-ly. Result: In 100m, Jiang Lan's step frequency increased from 4.64 step / s to 4.69 step / s and the step length increased from 1.82m to 1.85m. In 200m, step frequency increased from 4.42 step / s to 4.48 step / s and step length increased from 1.89m to 1.91m. The hip joint angle decreased significantly at the moment of foot landing. But no significant change was found in knee and ankle joints (P>0.05). Conclusion: Through the training and improvement of specific strength and technical movements, stride frequency increases along with step length. The change of step length is due to the comprehensive result of human body's running pro-cess, and not just the changes of joint force or movement structure. The variability of gait parameters may greater than that of the step length change.