| Objective: This study on elite male badminton players high ball backhand strike back on sports biomechanics analysis technology, its purpose lies in the backcourt revealed four badminton players high ball backhand hit the technical action periodical racket stage and swing the ball stage human related links kinematics index and parameters for the similarities and differences in the backcourt high ball backhand strike action techniques teaching, training, evaluation, provide objective theoretical basis for diagnosis.Methods: This paper adopts two the same specifications Sony1080i camera, filming frequency 50HZ subjects for Beijing badminton team, three outstanding athletes and 1 Israeli athletes (both right hand hold the whole simulation match take), select the best ball movement that athletes for research action video, once Ariel analysis system adopts the system. Results: In winds directs to pat the stage, four athlete right shoulder joint angle is increases in turn, the right elbow angle actually does not present the rule change, in right wrist change respectively different; In swing of the racket to hit a ball the stage, our country athletes wields the racket to be away from respectively is 0.8 meter, 1.23 meter, 0.98 meter during the same period of time, four member right upper limb various joints maximum speed presents the order is the left shoulder -right elbow -right wrist - right hand - racket;In the hitting a ball time, relative's right hand speed in pairs is being big, its value is 13.29m/s, Gui Bin's the right elbow speed is big, but the Misha racket absolute speed is big, its value is 26.01m/s, our country's athletes displays for right shoulder's speed is bigger than the left shoulder, the left hip's speed is smaller than the right hip's speed, the right knee speed is bigger than left knee's speed;In the center of gravity, four athlete's center of gravity values are mainly forward, the direction movement toward right, Gui Bin is bigger on X axis value, Huang Guoxing is bigger in the Y axis's value, in wields the racket to hit a ball on the stage Z axis to have the drop slightly, Misha body center of gravity slightly backward and toward left;Wields the racket to hit a ball the stage time is about 0.12 second, the relative in along with wields the time which the return to original state stage uses to be long in pairs, but Huang Guoxing's total time (1.30s) and various stages' time is low; In hits a ball descent point , Huang Guoxing ejects the ball fell in opposite party has backhanded the agent region, the ball which the relative ejected in pairs falls in opposite party has backhanded the position the middle place region, guibin ejected the ball which falls after opposite party forehand position doubles the service line region refinedly, Misha ejects the ball which falls after opposite party forehand singles on service line.Conclusion: 1.measured four outstanding athletes' right shoulder angle is increased in the racket, while the right elbow angle showed no rule change, its purpose is to adjust the swing and make it more consistent with characteristics of muscle contraction, But Gui-Bin' racket is more fully, reasonably, Qi' racket is inadequate.2.In the end time of the racket, the average line speed of the measured' the right hand showed a maximum, the right upper limb movement before the ball hit the bat is consistent with the whip principle, Gui Bin' swing quality is optimum.3.In the hitting time, shoulder joint angle of the measured is maximum in entire process to win the high point and velocity of each joint show certain order.4.The measured players ' center of gravity is to right and front, but up and down is not obvious. |
PDF Full Text Request