A Study On Eye Movement Of Different Leveltable Tennis Players To Judge The Hitting Trajectory When They Receive The Backspin

Table tennis is a competitive program with the characteristics of high speed and many changes.The links of returning the service in the competition obviously contain the tactical judgement process of the players.If players can judge the opponents' purpose aright as soon as possible in the process of returning the service of table tennis,it will greatly reduce the difficulty of returning the service.So,the table tennis players need to know clearly the specific counter-attack tactics contained in the incoming balls of different characteristics,and then they can match the tactical information contained in the coming balls,and judge them more correctly.This study mainly explores the judgment of the national second-class table tennis players on the relationship between the trajectory of the backspin serve in the left and right area of the table and the length of the hitting track and the position of the end line of the table when they receive different information volumes,compared with the students of physical education college with short training years of table tennis,the prejudged results are different under different information volumes.The study adopts Paradigm Research of “expert—newbie”,analyzes the difference between the two groups in judging the position of hitting track by experimental method,compares the difference in the number of fixation point,fixation time,fixation trajectory,as well as the accuracy of trajectory pre-judgement and reaction time between the two groups to explore the difference between the two groups of subjects.The study draws the following conclusions:1.In the judgement of the direction of the hitting trajectory,the experienced group has more fixation points on the racket position of the server than those of the novice group,and the judgment accuracy increases significantly after the racket touches the ball,which is an important time to judge the direction of the hitting trajectory.2.In the judgment of the arc length of the hitting trajectory and the position of the end line of the table,the experienced group has more fixation points and longer fixation time in the racket and ball area of the server than the newbie group,after increasing the information that the ball bounces off the table and flies to the net,the judgment accuracy of the experienced group increases obviously,which is the most important moment to judge the relationship between the length of the hitting trajectory and the position of the end line of the table.3.In the fixation track,the distribution of the fixation track in the experienced group is relatively simple and concentrated,and focuses on the racket where the server is about to touch and the ball flying after being hit by the racket.It will not look at other parts of the serve that have nothing to do with players' judgment.