Of The World Elite Men's Tennis Athletes Serve Biomechanical Analysis

Tennis Serve complicated than other techniques,more restrictions,and sent the ball must cross the 0.914m (Network Center) network,into diagonal 6.4m×4.115m serve Restriction,Confrontation between the two sides serve the beginning of movement is an important weapon for offensive shots,because each disk can serve to implement their own ideas based on serving technology,The high-speed,accurate serve is scoring an overwhelming victory,and opponents tactically important technical aspects and means of,Especially in the first tee, the players tend to serve directly with swift and strong points,therefore,serve Biomechanical study have important theoretical and practical significance.Athletes of the technology model is a valuable paradigm, and can be considered as a biomechanical principles of law and reasonable technology. Structure of the Top Players in-depth technical study to find the technical structure of the characteristics and patterns of practice of technical training will be an important reference value. Large number of documents show that domestic and international tennis at this stage special training and have attached great importance tennis technology to improve service techniques and new technology research,and our tennis players at this stage is relatively weak in serving technology, for this situation, the basis of this study Inspection of domestic and foreign literature and the ATP Champions Tour in 2010,Chengdu and other top four athletes in public Saigeleige Serves three-dimensional kinematics of the measurement and analysis, from the perspective of biomechanics and movement principles serve as a technology analysis, to obtain the best tennis in Men's Tennis kinematic parameters, focusing on its key service techniques and carry out research and discussion, reveals the world's best tennis player mode of service techniques and demonstrates the tennis serve biomechanics principle,but also for the majority of coaches,athletes serve to provide some technical reference data, improved training of service techniques, rich technical theory of tennis.Greg and other four players on ATP Champions Tour in Chengdu Open Competition Serves test site, from the perspective of biomechanics and movement principles serve to analyze the technology that serve action technology model Greg should learn from their actions model of the main indicators are as follows: Held to make an action in the drop phase,when four players serve stations Engqvist,Sampras serve tactical use of FB;and Fugaite,Greg FU serve tactical use of the two stations have different methods advantage. Literature also shows that the above advantages of the two serving stations.Held to make an action in the drop phase,Greg ball release height were higher than other athletes,but also in the process of Greg the drop in the lowest point from the drop the ball from the hand of the stage, the drop arm elbow are relatively straight stretch,time of ball release the ball an average arm elbow angle 167.48°,rising ball reached the maximum height 3.51m,And ball release speed reached 5.61m / s,ball release height and height ratio 1.17;minimum knee flexion angle of the supporting leg average of 90.58°,in the kicking process can one go; trunk torsion angles the ball an average ace is 43.33°,first serve is 42.98°, the second fat is 38.65°.Backward swing phase,action phase in the legs swing back Push technical data that the knee, Gregg Ace,first serve,second serve when the supporting leg kicking rate is 76.15°,75.01°,74.73°, The data that serve a large range of motion when the knee joint, movement speed,can create favorable conditions for subsequent action to maintain a larger elbow angle of swinging forward movement in favor of rapid elbow extension hair force action,to improve elbow stretching speed. From the Ace ball,first serve, second serve when the elbow when the arm holding the ball.Swinging forward swing phase,the ball Greg height of 1.6 times the height,height of players hit the ball higher,the ball over the net the greater the chance,and hit the ball low height will not only increase the hit technical difficulty of the ball movement,but also the ball easily into the net,the ball failed;Ball point to the drop point of the average horizontal distance was 0.96m,0.71m,0.63m, data show, Greg the ball point to drop point average to be slightly larger than the horizontal distance between the other three,which is follow-up off the swing to exert action,and provide enough space to make the action more effective stretch;Part of the body before hitting rate,Greg serve,shoulder,lbow,wrist and a bat speed is gradually increased to the largest racket speed,indicating that its action technology is fully consistent with the technical principles beat action.