女子七项全能各因素之间的关联与变异分析--以2020年全国田径锦标赛为例

Correlation and Variation Analysis of Various Factors in Heptathlon--Take the 2020 National Athletics Championships as an Example

目的:揭示女子七项全能各因素之间的关联与变异,探索七项全能项目特点及各项目间成绩与世界优秀成绩差距的关键。方法:运用文献资料、关联分析、对比分析和数理统计法对2020年全国田径锦标赛女子七项全能的总成绩及各单项成绩进行数据统计,计算相应的关联度及变异系数。结果与结论:100米栏与200米这两种速度类的项目成绩与总成绩关联度值分别为0.784、0.707;国内女子七项全能800米项目的关联度排名较国外差异较为显著。中国与世界优秀女子七项全能运动员总成绩存在较大差距,若将800米作为关键项目研究会使女子七项全能成绩进入“弱势项目(800米)误区”;受7个单项之间的内在矛盾与冲突,变异系数随着比赛顺序,体能和项目的技术发生变化,在7个项目之间呈规律性的大幅度变化。

To reveal the correlation and variation of various factors in women's Heptathlon,and to explore the characteristics of heptathlon and the key to the gap between the results of various events and the world excellent results.Methods:by using the methods of literature,correlation analysis,comparative analysis and mathematical statistics,the total and individual results of women's Heptathlon in 2020 national track and Field Championships were statistically analyzed,and the corresponding correlation degree and coefficient of variation were calculated.Results and conclusion:the correlation between the results of 100 meter hurdles and 200 meter speed events and the total results were 0.784 and 0.707 respectively;Compared with foreign countries,the correlation degree of domestic women's Heptathlon 800m events is significantly different.There is a big gap between China and the world's elite women Heptathlon Athletes in the total performance.If we take the 800 meter as a key event,the women's Heptathlon performance will enter the"weak event(800 meter)misunderstanding";Due to the internal contradictions and conflicts among the seven events,the coefficient of variation changes with the order of the competition,physical fitness and the technology of the events,and changes regularly and greatly among the seven events.