Kinematics Analysis Of Consistency Of Forehand Backhand Strokes By Beijing Sport University Badminton Students

Research purpose: This research takes 10 badminton special class students of Beijing Sport University as the research object,of which 5 are from the school of education and 5 are from the school of competitive sports.Through the kinematic analysis of the badminton technical actions of forehand high-range,drop and kill,this paper studies the consistency of the three kinds of backcourt batting techniques,aiming to reveal the connection and difference of the three kinds of backcourt technical actions,so as to better understand the rules and characteristics of the three kinds of action techniques,study the consistency of the three kinds of backcourt batting techniques,and reveal the three kinds of backcourt batting techniques The connection and difference of technical action.Through the comparison of two different sports groups,this paper analyzes the common problems and perplexities that hinder the development of badminton players’ level,and suggests that we should strengthen the relevant theories of badminton professional technology,and combine the theoretical principles with practical training effectively,which will be helpful to provide suggestions and references for the scientific training and level improvement of badminton players in the primary stage basis.Research methods: Ten badminton students in Beijing Sport University were photographed with 8-lens infrared high-speed motion capture system(motion analysis raptor-4,USA)to complete kinematic data collection,and calculate the angle,speed and other parameters of upper limb and lower limb.According to the characteristics of racket frame speed in the process of finishing the technique,the three techniques are divided into three stages: moving position taking stage,leading racket stage and accelerating batting stage.In this study,two factor repeated measurement ANOVA method was used to test the differences of three technical parameters(drop ball,longrange ball,kill ball)and two sports levels(competitive sports and sport education),and the subsequent test was LSD.Results: 1.From the spatial and temporal parameters,it can be concluded that there is no obvious difference between the students of competitive sports and physical education.In terms of technical movements,the killing time is the shortest,followed by the lob shot and the drop shot.2.From the speed parameters,it can be concluded that the technical movement differences generally shown by each index are the fastest killing speed,the second is the high distance shot,and the slowest drop shot.In terms of joint velocity,the wrists and hands velocity of the students were significantly higher than that of the students in the competition.In terms of the maximum joint speed in the accelerating hitting stage,the maximum shoulder speed,wrist speed and hand speed of the competition students were significantly lower than those of the sports students in the drop ball.3.It can be concluded from the movement characteristics of the upper limbs that the activity ranges of the shoulder spread Angle,shoulder flexion Angle,elbow flexion Angle and wrist extension Angle of the competition students are all smaller than those of the body-teaching students in the racket lead stage.In the accelerated hitting stage,the activity range of the shoulder spread Angle,shoulder flexion Angle,elbow flexion Angle and wrist extension Angle of the competition students were all larger than that of the physical education students.4.From the characteristics of trunk movement,it can be concluded that there is no significant difference in the range of trunk roll angle between competitive students and physical education students at the stage of leading and accelerating batting;the range of trunk twist angle shows that competitive students are larger than physical education students at the stage of leading and bidding,and competitive students are smaller than physical education students at the stage of accelerating batting.5.From the movement characteristics of the lower limbs,it can be concluded that the movement range of hip joint,knee joint and ankle joint in the whole stage of competitive students is smaller than that of the students in physical education.6.From the movement characteristics of the center of gravity,no matter the height of the center of gravity at the time of hitting or the swing range of the center of gravity at the whole stage,the students of competitive sports are smaller than the students of physical education.Conclusion: 1.From the parameters of time and center of gravity,we can see that there is no significant difference between the physical education and competitive sports students.It shows that the influence of action time and center of gravity between different levels is not obvious.2.It can be seen from the speed parameters that the shoulder,elbow,hand and wrist speed of students in physical education at the time of hitting are significantly higher than that of students in competitive sports,while the speed of students in killing is less than that of students in competitive sports.The results show that the velocity parameters between different levels have a certain influence on the consistency of backfield actions.3.It can be seen from the angle parameters that there are obvious differences between sports teaching and competitive sports students.It shows that the angle parameters between different levels have obvious influence on the consistency of the back field action.