Research And Analysis On The Changing Trend Of Chinese Women’s Heptathlon Performance

Under the "Sports Power" called by General Secretary Xi Jinping,sports’ status in society is becoming more and more important.Athletics is the foundation and key of the Games.The development status of track and field events reflects the national sports development level.And all-round sports,with its reputation as the "mother of track and field",is an important symbol of the development of track and field projects.All-round exercise is a comprehensive project that combines physical fitness,technology and wisdom,reflecting the physical qualities of sensitivity,coordination,explosion,strength and so on.The good development of the all-round sports program can enable the cultivation of comprehensive talents in China to a higher level.1987-1993 was the heyday of the development of China’s all-round projects.At that time,China’s outstanding athlete Ma Miaolan ranked third in the world with a score of 6750.From1993 to the present,China’s women’s heptathlon has gradually lost its position as the world’s strong point,and its performance has been unsatisfactory.It is difficult for other athletes to enter the Olympic Games.The total score of the women ’s all-around competition is obtained by accumulating the scores of each result through the all-around score table.According to the special score characteristics of the all-around,the seven individual achievements make progress together,which is the top priority for improving the overall score of the women.In order to explore the specific development trend of Chinese women’s heptathlon performance,get the mutual relationship and internal connection between each individual and total performance,understand the advantages and gaps between domestic and foreign athletes,and provide theoretical and data references for Chinese sports researchers.This article selects the individual results and total scores of the top eight in the 9th,10 th,11th,12 th,and 13 th National Games,respectively(the results are from the official website of China Federation of Athletics),As well as the top eight individual achievements of the world’s elite athletes in the 31 st Olympic Games in 2016(the achievement data are all from the IAAF official website)as a research sample.This article uses literature data method,mathematical statistics method,gray correlation analysis method,logic analysis method,inductive deduction method,and comparative analysis method to study women’s heptathlon performance.Concluded as follow:1.From the analysis of the women’s heptathlon in the National Games in the past 20 years,the overall level of all-round athletes is still in a downward trend.2.From the grey correlation analysis,it is concluded that the correlation between the 100-meter hurdle and long jump of Chinese elite all-around athletes in the past 20 years has been greater in the fifth session,that is,it has a greater impact on the overall score.The weakest of the seven items is the javelin and 800 meters.3.According to the analysis of item group training theory,100-meter hurdles,200-meter hurdles are speed events,and 800-meter hurdles are endurance events.Long jump,shot put,high jump,and javelin are all categories of physical strength-led fast strength.project.In the comparative analysis of individual results,long jump and shot put as high-speed strength items have a high correlation with the total score,but the javelin is at a disadvantage,indicating that the domestic all-round female athletes are not balanced in the development of fast strength items.4.In the analysis of women’s heptathlon in the 27-31 Olympic Games,the overall level of foreign women’s all-around is higher.In the comparison of the women’s heptathlon results of the 13 th National Games in China with the women’s heptathlon results of the 31 st Olympic Games,the difference between the individual events is large,and the domestic women’s allaround development is still in a stagnation or even backward state.In the grey correlation analysis,the ranking of the 13 th National Games women’s all-around scores for the overall score is: 100 m hurdles> high jump> 200m> shot put> 800m> javelin> long jump.In the 31 st Olympic Games,women’s all-around singles ranked the total score as follows: 100-meter hurdle> 800 meters> long jump> high jump> shot put> 200 meters> javelin.This shows that the development of domestic women’s individual performance is not much different from the development of foreign women’s all-around individual performance.Among them,foreign women’s individual items have a high degree of correlation with the overall score,and their achievements are comprehensive and balanced.However,the development of fast-powered projects for domestic all-around women varies,and the gap is large.5.Based on the comprehensive development trend of women’s all-around performance in the past 20 years of the National Games and the comparative analysis of the 13 th National Games and the 31 st Olympic Games abroad,it can be seen that China’s outstanding women’s heptathlon sports are fast and powerful in speed events projects(100m hurdles,200 m,long jump)have not been fully developed in the past 20 years,and the javelin,as a fast power project,has not been balanced with other similar projects.Lack of talents,lack of scientific research and psychological problems of athletes are also urgent problems to be solved in the development of women’s heptathlon in my country.