Research On The Technical And Tactical Characteristics Of Full Back Defense Of The Top 8 Teams In The Twenty-first World Cup

With the development of football competition,more and more attention has been paid to the attacking and defending tactics of football.Through the change of tactics,a football team can achieve the suppression victory.Attack and defense are equally important as tactics.Top teams are usually highly skilled in offensive tactics.When teams are of equal strength,offensive tactics are difficult to play a role.At present,each athletic team is in the guarantee attack intensity at the same time adjusts own defense tactics,this also is the future team tactics comprehensive development integral requirement.This paper aims to analyze the 21st World Cup in Russia,which is of great significance to the development of Chinese football.Through the data statistics of the 21st World Cup in Russia and the analysis of the first eight offensive techniques and tactics in the 21st World Cup,the following conclusions are drawn:1.The performance of the French team in this competition is very excellent.Through the video analysis of the competition,it can be found that the French team has a very high number of ball breaks in the competition,which shows that the full back plays a very strong defensive role in the whole game,which also contributes to the final winning behavior of the French team.In addition,the data analysis of the top eight teams in different regions shows that the top data of the French team is the highest.2.In the application level of blocking technology,it can be seen that England team has the highest level,followed by Brazil and France team.The players of these three teams have strong overall quality and tacit cooperation.In the match with other teams,especially Russia and Sweden team,the other team can only resist the supply through passive defense,and can not use the ball grabbing technology.3.The analysis of the characteristics of the personal defense technology of the full backs of the top eight teams,and the analysis of the personal defense technology of the full backs of the top eight teams.In modern football games,the whole defense tactics of multi change,multi-level coordination and strict mutual protection have replaced the simple regional or man-to-man defense.The world football's defense style is consistent with the attack style,and is constantly changing,The defense counterattack represented by France is gradually rising.