A Study On The Use Of Counter-attack Tactics In The Final 16 Of The Champions League In 2018-2019

With the development of football techniques and tactics,the emphasis of football has changed constantly,from 235 formation to total defense,chain defense to pass-andcontrol tactics,and then to the emphasis on the conversion speed of offense and defense in today's football world.Counter-attack tactics can be valued for their unique advantages.Any team,regardless of the tendency of different offensive play,can use counter-attack tactics and score goals.Through the literature review found that before the domestic research methods for data collection in affected by subjective is larger,the more significant difference,so in this article,through the computer system for data collection,in a more way to study the reliability and validity of the counter indicators to the influence degree of the counter effect,provides the reference and basis for the game and football training.The author first of all used literature to refer to research situation at home and abroad on the counter attack,secondly from professional football data analysis platform wyscout company choose the 16 of the champions league tournament team completed 613 times back clips to counter-attack tactic research,hope that through more novel computer video data acquisition method makes video viewing efficiency was improved,the definition of back more accurately.After collected data using mathematical statistics to counter,then use SPSS multiple logistic regression analysis for statistical data processing,understand retaliate way,pass the ball,retaliate unavailable,launch area,time,score the influence degree of the state to counter effect,at the same time combining correlation method,case analysis method to study the specific situation.Understand the ideal pattern of counterattack.The results show:1.There is no correlation between the frequency of counter attacks,the conversion rate of shots,the number of goals scored and the team's strength.The team with a good record may have a more balanced use of skills and tactics.2.The conversion rate of counter-attack goals is not too high,with an average of five counter-attack goals in 100 times.The teams with the most counter-attack goals have not all achieved satisfactory results.3.The launching method of counterattack,the number of counter-attack passes,the duration of counter-attack and the state of score have no significant influence on the counter-attack effect.The launching method of counter-attack is not only the breaking ball,set ball and goalkeeper in the absence of the ball,but also the passing and individual breakthrough in the presence of the ball.The number of counter-attacks that result in a goal is usually 1 to 3 times.The effective time of counter-attack is usually concentrated between 6 and 14 seconds,and 10 seconds is the most concentrated time point of counterattack and goals.The state of score with the most counterattacks is the state of lead,followed by the state with the same score,the state of score leading or falling behind too much is not the ideal state of score for counterattacks.4,retaliate launch area and time impact on the counter effect is significant,the P value is significantly less than 0.056,the results show that the level of game time and space factors,the technical level of retaliate characteristics can affect more effect,is one of the most important space for the football match,only to effective use of space,tactical arrangements to produce ideal effect.5.In the study on the number of offensive and defensive players,it was found that in the cases where the counterattack scored,the number of attacking players of the counterattack team was greater than or equal to the number of defenders of the counterattack team.