摘要
通过研究3名高水平跳水运动员407C技术10 m真实起跳和陆台练习起跳的起跳动作,旨在发现二者之间的差异,为高水平运动员改善该技术提供一定的理论依据。采用运动生物力学的平面定机摄影对动作技术进行拍摄,对这3名跳水队员进行陆台和10 m台的407C起跳技术进行拍摄,运动图像采用美国的APAS解析系统进行解析,获得数据。研究发现:10 m台起跳存在踝、膝关节蹬伸不充分以及躯干下压较多的情况,同时上肢肘关节角度在蹬伸阶段总体较小,不利于肩的发力; 10 m台起跳相对陆台起跳,人体腾空后重心最高点的高度较低,达到重心最高点时躯干转过的角度相对较少,且躯干转体的角速度较快;模拟计算完成3周转动时陆台起跳的高度更高,垂直速度相对较慢,有更充分的时间以及高度完成后续的打开以及入水动作。陆台的起跳方式更有利于队员完成407C的跳水动作。
Through the research on the difference of the 407 C take-off technique between the in the 10 m platform and practice in the landing platform,it can provide some theoretical basis for the improvement of the high level athletes. Using the sports biomechanics of the plane set,camera 3 diving athletes' 407 C take-off technique in the 10 m platform and practice in the landing platform,using the APAS system to analyze the image. There is not enough stress in the ankle and knee joints,and the pressure of the upper body is lower in the 10 m platform,and the upper limb elbow joint angle is smaller in the pedal extension stage,which is not conducive to the shoulder force. The center of gravity of the take-off in the 10 m platform is lower,and the angle of the trunk is smaller and the angular velocity is faster when the center of gravity is highest;When the simulation is completed for 3 weeks,the take-off height in the landing platform is higher,the vertical velocity is relatively slow,and there is more time and altitude to complete the follow-up action. The take-off in landing platform' technique is more conducive to complete 407 C diving for these 3 athletes.
作者
马莹
李利杰
李小生
刘占峰
MA Ying;Li Lijie;LI Xiaosheng;LIU Zhanfeng(Xi'an Physical Education University,Xi'an 710068,China;Shaanxi Swimming Administration Center,Xi'an 710000,China)
出处
《西安体育学院学报》
CSSCI
北大核心
2018年第5期618-624,共7页
Journal of Xi'an Physical Education University
基金
陕西省备战13届全运会攻关课题(陕体201612-04)