吕秀芝打破女子20 km竞走亚洲纪录技术动作和战术特点的分析

摘要

高水平的竞技体育具有很强的个体性，研究打破纪录的竞技成绩更具有重要意义。通过录像拍摄和影像解析等方法，对吕秀芝在2015年世锦赛选拔赛上打破亚洲纪录的技术动作和战术特点进行分析，旨在为中国高水平女子竞走提供科研参考。研究发现：吕秀芝打破纪录的技术特点：1）随着阶段的进行，吕秀芝步长不断增加，重心移动速度不断加快，摆动越发积极，上下肢的摆动速度和不断加快的重心移动速度高度一致。2）犯规参数指标符合人肉眼可见的规范和要求，但还有改进空间，在高速行走情况下，膝关节偶有曲腿情况的发生，应注意避免。吕秀芝打破纪录的战术特点：全程速度均值较大，且速度的波动较小，节省了不必要的能量消耗，为最后冲刺打下基础。%High level competitive sports have individual difference,and it is of great importance to study record breaking result.By the method of video recording and analyzing,this paper made an analysis on the technique and tactics of Lv Xiu-zhi breaking the female 20km race walking Asian record.The results show that Lv's technical characteristics include 1)Step length increased constantly and the velocity of CG speeded up constantly,body swing becoming more active and highly consistent with the velocity of CG.2) The parameters of breaking rules comply with visualized standard and attention should be paid to avoiding breaking rules.Tactical characteristics include the average velocity is high and the standard deviation is low,which has saved energy consuming and laid the foundation for sprint.