Comparative Study Of Offensive And Defensive Ability Of Women’s Volleyball Team In 2019 World Cup Based On TOPSIS-RSR Evaluation

This article takes the technical indicators of the 12 participating teams of the Women’s Volleyball World Cup in 2019 as the research object,uses the literature method and the survey method to determine the technical indicators of the external performance of offensive and defensive athletic capabilities,and uses the TOPSIS-RSR comprehensive evaluation method to evaluate The team’s offensive and defensive athletic ability is evaluated.The evaluation results and gear division have statistical significance after being verified by spearman correlation analysis and analysis of variance.Based on the results of the evaluation,the literature base method and mathematical statistics method were used to compare and analyze the basic conditions of the players in the women’s volleyball team of the World Cup,the offensive and defensive ability of different gears,and the technical indicators between the Chinese team and the main opponents.Differences and deficiencies in body shape,offensive and defensive competitive ability,and offensive and defensive technical characteristics with other participating teams.Research indicates:First.The data of the Chinese team members in the height,weight,and Quet elet Index show that they are ranked high.Both the spike height and the block he ight are at the top of the list,which are significantly different from Japan,South Korea,Serbia and Kenya;but compared to Japan,South Korea,Dominica and the Netherlands,the Chinese women’s volleyball team has less experience in participati ng.Second,the team’s offensive competitive ability,defensive competitive ability,offensive and defensive competitive ability are all significantly related to the final score of the game.Among them,the offensive and defensive athletic ability has th e most correlation with the final result of the game.Moreover,both offensive and defensive competitive abilities are very significantly related to offensive and defens ive competitive abilities.Third,the ranking team is divided into three ranks using the rank sum ratio evaluation method.The Chinese team,the Brazilian team and the American team belong to the first rank;the Japanese team,the Russian team,and the South Kore an team belong to the second rank;the Serbian team Cameroon belongs to the thi rd gear.And through the analysis of variance,there are very significant differences between the various gears.The top four teams in this World Cup have the best offensive and defensive capabilities.Brazil,the United States and Russia are still t he strong opponents of the Chinese team in the future.Fourth,the first team and the second and third gear have advantages in offen sive and defensive capabilities,but due to the impact of blocking the ball,the qua lity of back-line defensive pilling needs to be improved.The advantage of the sec ond team over the third team is mainly reflected in defensive competitive ability,and the advantage in offensive competitive ability is not significant.There is no si gnificant difference between the third gear teams in the index of missed points.In today’s era where the development of technology and tactics is becoming mature,strengthening the efficiency of using the opponent’s turnovers to score is an effecti ve way to distance the strong teams from the strong teams.Fifth,the Chinese team showed high killing and low turnover smash and laun ch abilities in the offense,but the distribution of smashes was concentrated,showi ng a problem of over-reliance on the main attacker Zhu Ting and the lack of scor ing ability of the right-wing players.At the same time,the Chinese team has falle n behind in its ability to miss points,indicating that the Chinese team’s grasp of t he opportunity ball in the offense still needs to be improved.Sixth.The Chinese team has excellent blocking scoring ability and blocking st ability on defense.However,there are still some gaps between receiving and savin g effects compared with the world’s best teams.The Chinese team’s deputy Yuan Xinzheng has a high blocking error rate and the blocking stability needs to be im proved.Free men and back-line defensive players have a difference in receiving a nd back-saving defense compared to other strong teams.