仰泳在竞技游泳比赛中占有一定的地位，从历届奥运会仰泳比赛成绩中发现，我国男子仰泳项目与世界水平还有一定的差距。近年来，浙江省游泳运动员徐嘉余的表现较为突出，在2014年5月的全国游泳冠军赛中，他打破了男子100 m仰泳和200 m仰泳的两项全国纪录。目前，对于男子仰泳的运动学研究不多，这些研究中多数是对划水技术和比赛战术的探讨。以2013年全运会，2014年全国冠军赛中男子仰泳运动员徐嘉余100 m仰泳的比赛成绩和技术分析为基础，并与2011年世界游泳锦标赛男子100 m仰泳项目前3名运动员的成绩和技术进行对比，利用现场拍摄法，录像观察法，对比分析法，数理统计等研究方法，分析对比出徐嘉余在100 m仰泳中，划水效果好，转身和到边技术有所提高，但划频较慢，且途中游的速度稳定性上起伏较大。%Backstroke occupies a certain position in the competitive swimming competition .From the backstroke result of previous Olympic Games ,we found out that there was still a certain gap between China’s men’s backstroke performance with the world level .In recent years ,XU Jia‐yu’s performance is more prominent ,who broke 2 national records of men’s 100 m and 200 m backstroke in the National Championship in May in 2014 .The number of present stud‐ies on the kinematic characteristics of men’ s backstroke is not much ,the majority of these studies is to explore stroke technique and game strategies .This paper took 100 m backstroke competition performances and technical analysis of men’ s backstroke swimmer XU Jia‐yu in the National Games in 2013 and the National Championship in 2014 as basis ,then made a comparison on performances and techniques with the top three athletes in 2011 World Champi‐onships men’s backstroke 100 m .Using the method of on‐site shooting ,video observation , comparative analysis ,mathematical statistics ,we come to the conclusion that in the 100 m backstroke ,XU Jia‐yu’s stroke effect is good ,his turn‐around and the edge technique has im‐proved ,but the frequency of stroke is low ,and the speed stability is undulating in midway swimming .
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