Analysis Diferent Levels Of Man's Shot Put Technqiues Through Sports Biomechanics

In this study, high-speed cameras, telemetry machinery and instruments, and force platform testing three machines simultaneously on three different levels of law Shot Put Athletes at the final glide shot put technique force action with the field test, using specialized analysis software, combined with sports anatomy, exercise physiology, sports training, sports biomechanics and other disciplines of knowledge of high speed video camera, EMG and force data for analytical processing, found them in the Final Push technology problems and gaps, and thus make more objective Diagnosis, objective and reflects not only conducive to the Final Push technology suitable range of kinematic parameters and, and muscle or muscle group can be found in this action process technology and variations in EMG characteristics of the foot force, but also found that many of the basic laws of motion technology in order to provide a reference for teaching and training.The results:(一) kinematics (1) The last part of the force to speed up preparations-study of the right shoulder of Cao** height of the value of speed and shot the largest value is 4.05m/s and 1.67m; Feng** accelerating force for the last part of the shortest value is 0.013s. (2) The last part hard acceleration-Feng** and Wu** horizontal displacement of the center and right hip relatively large difference between the horizontal displacement, respectively 0.10m and 0.13m; Feng** the right side of the knee, shoulder, hip and other joint velocity and acceleration for some of the most significant increase compared. (3) Body weight and shot speed changes-Wu** after the shot left the ground speed of has been increased, body weight reached the maximum speed of late, left the ground after the 0.08s, shot velocity curve upward trend was relatively stable, there is no point of apparent force. (4) Release Conditions parameter-the object of study Feng** Maximum shot velocity, to 12.41m/s; Wu** the shot angle 33.86°, with the player closest to the domestic good; Cao** and shot the maximum height value, value is 2.01m. (5) On the left support Technical aspects-Feng** left corner with left knee, left knee and left foot buffer angle angle from the ground than other two larger values were 169.37°,148.45°,117.59°.(二) Muscle mechanics (1) The final part of the force to speed up preparations-in addition to the right triceps and right deltoid EMG waveforms more gentle, the other ten have shown a strong muscle excitability, especially in the performance of lower limb muscle Special obvious, study the right Feng** value of gastrocnemius IEMG reached 689uvs.(2) Force to accelerate the final part-the excitability of the right rectus femoris minimum, integral EMG von ** as 103uvs, Wu** and Cao** the average 137uvs; (3) Finally, the whole process of force-the right erector spinae, right triceps, right pectoralis major and right rectus abdominis muscle is large the integral, values were 564uvs,405uvs,393uvs,377uvs, the integral of the right rectus femoris EMG was the smallest 137uvs, other muscle IEMG value of the measured performance is average, concentrated around the 276uvs. (三) Dynamics (1) mechanical index of the last hard right foot-right foot study by Feng ** peak horizontal and vertical forces are the largest, respectively,427.97N,1609.78N; Cao** minimum, respectively,329.07 N,1339.54N.(2) The mechanical index of the last hard left-Feng** studied the vertical force peaks and to peak time than the maximum value of 30,635.13, the outbreak forced the best.