| In this paper,the attack and defense ability of the Chinese team in 18 matches in the Asian qualifying stage of the 2022 Qatar Football World Cup is taken as the research object,literature survey and questionnaire survey are used to determine the attack and defense technical indexes,and TOPSIS-RSR synthesis method is used to compare and analyze the attack and defense ability of the two groups of the Chinese team respectively.After spearman correlation analysis and variance analysis,the evaluation results and stall division were statistically significant.Based on the evaluation results,this paper adopts the methods of documentary data,video observation,mathematical statistics and comparative analysis to compare and analyze the physical conditions of the players in each group of the Chinese team,the offensive and defensive competitive ability of the teams in different positions,and the offensive and defensive techniques between the Chinese team and its opponents in the Asian qualifiers of this World Cup.To explore the differences and deficiencies between the Chinese team and other teams in the same group in body form,offensive and defensive technical level,and offensive and defensive technical characteristics.The results show that:1.By comparing the basic physical conditions of the Chinese team with those of the same group,it is found that the height,weight,Ketole index and average age of the Chinese team rank well in Group A of the Top 40 Competition,and they have advantages compared with other national teams.In Group A of the top 40 tournament,the team is ranked high in height,weight,Ketole index and average age,and has the foundation to compete with other national teams.2.The TOPSIS-RSR analysis method used in this paper has been tested by correlation,and the calculation results can reflect the offensive and defensive capability of Chinese team more accurately.The Ci value and RSR value of attack and defense of China ranked first in Group A of the Top 40 tournament,indicating that China ranked first in attack and defense ability of the same group.The Ci value and RSR value of attack and defense of China ranked last in Group B of the Top 12 tournament,indicating that China’s attack and defense ability was at the end of the group.RSR analysis method was used to rank the overall attack and defense ability of each team.The teams in Group A of the Top 40 competition were divided into two levels.China was ranked the first level,which was close to the same level of Syria,and had obvious advantages compared with the second level.Group B of the 12 th round is divided into three tiers,with Japan and Saudi Arabia in the first tier,Australia and Oman in the second tier,and China and Vietnam in the third tier.There is a big gap between the Chinese team and the first and second gear teams in overall attack and defense ability,which is close to the Vietnam team at the same third gear.3.In the comparison of the attacking ability of the same group in the Top 40 match,several problems in attack were exposed when the Chinese team gained advantages in various offensive data.First,Chinese players did not have a strong sense of position of their own positioning.Second,in the case of the other team contraction defense,the players can not efficiently complete the no-ball running,for teammates to create good passing and shooting opportunities;Third,the player’s personal ability to grasp the score is not good,some shooting timing is too far-fetched,not the most reasonable choice.4.In the comparison of the defensive ability of the same group of the Top 40 teams,there are certain differences in the application of defensive techniques in different matches.In the face of the weak Maldives and Guam teams,the Chinese team has strong defensive initiative,more active in grabbing the ball,and a higher defensive success rate.However,in one draw and one loss two games,the defense is conservative,the overall defensive consciousness is poor,and the individual defensive skills of the players in the backcourt make big mistakes.5.In the comparison of attacking ability of teams in the same group of the Top 12 competition,the Chinese team has unstable ball-handling ability under high pressure,low quality of delivery,lack of tacit understanding in local attack,and poses little threat to opponents.Compared with the strong teams,the overall attacking ability is still insufficient,with a single attacking mode and a slow attacking speed.6.In the comparison of the defensive ability of the same group in the Top 12 competition,the Chinese team is relatively passive in the defensive aspect,with poor coordination and execution of the overall defense.The speed of switching from attack to defense is slow,and the easy mistake of the zone defense after dropping position is to only stare at the ball without marking the man. |
