Research On The Characteristics Of Attack And Defense Ability Of Women's Volleyball Teams In 2019 Word Cup

In the 2019 women's World Cup,China team won the world cup with 11 consecutive victories.Once again,China's women's volleyball team shows the strength of the world's top teams.Although the world cup lacks two European strong teams,Italy and Serbia,it has a strong research value as the world women's volleyball event closest to the Tokyo Olympic Games.In order to explore the current attack and defense strength of high-level teams in the world and make Chinese women's volleyball more effective preparation for the Tokyo Olympic Games,this paper takes the attack and defense ability of the teams participating in the 2019 World Cup as the research object,and adopts the research methods of literature,expert interview,video observation,mathematical statistics to study the non-technical characteristics,attack and defense level and technical and tactical characteristics of the teams participating in the 2019 World Cup.The results are as follows:1.In the non-technical indicators of the women's volleyball team in the world cup,the Chinese team members have less experience in the world competition,the Dutch team and the Dominica team members have more experience in the world competition,the Serbian team and the Argentina team members are younger,the Brazil team members are older,and the other team members are basically in the "golden age";The physical fitness of Chinese team members is excellent.Their spike height and block height have obvious advantages,the physical quality of Argentina team and Cameroon team is poor.2.By using the method of non integral rank sum ratio(WRSR),the team's attack and defense ability is divided into five grades: A,B,C,D and E.Chinese team and American team have higher WRSR in attack ability,defense ability and attack defense ability,and they have good attack and defense ability.The results showed that the attack ability of WRSR,defense ability of WRSR,attack and defense ability of WRSR in the participating teams were correlated with the ranking,and the correlation coefficients are-0.664,-0.857 and-0.898,respectively,which are statistically significant.3.The regression equations of attack ability of WRSR,defense ability of WRSR,and attack and defense ability of WRSR were established.The attack defense ability of each team was classified by WRSR evaluation method.China team and Japan team were the first team,the United States team,Brazil team,South Korea team and Russia team were the second team,Dominica team and Netherlands team were the third team,Serbia,Argentina team and Kenya team were the third team Cameroon is the fourth team.4.By cluster analysis,the attack and defense technical styles of participating teams are divided into five categories: China team is an integrated team,the United States team,Russia team,Brazil team,South Korea team,Netherlands team and Argentina team are adventure team,Japan team is conservative team,Serbia team and Argentina team are development team,Kenya team and Cameroon team are basic team.5.The technical and tactical characteristics of the women's volleyball team in the world cup are as follows: aggressive service,high accuracy;more attack points,enhanced scoring ability of the main attack;improved receiving ability of the main attack,no receiving service;fast defense movement,accurate position taking;high passing efficiency,flexible tactics;strong block prediction ability,fast movement.