Kinematical Analysis Of Taekwondo 's Post - Kick Technique

In the new rules and the judging method of continuous improvement of today. Competition is no longer a single technology competition. As to turn technology score with the advent of induction protector to improve the game. That is the kick, side kick, kick, rear kick technology more frequently appear in the game. As the use of the highest number of leg kick it. Rear kick technology has undoubtedly become the athletes and coaches are concerned about the hot technology. By using high speed photography and 3D image analysis system of Tianjin Sports College Taekwondo athletes rear kicking technique of kinematics is analyzed. Thus kicks kicking leg and a supporting leg of each joint of the average linear velocity, hip joint angular velocity, the link speed, the change of gravity data and the time characteristics of the technical action. And the analysis of the impact of some of the physical fitness on the impact of the correlation, and finally on the impact of the completion of the speed of the technical analysis of the kinematic factors. So as to obtain the reasons for the impact of the impact of the speed of play, to provide a basis for future scientific training, but also to contribute to the scientific research of taekwondo. Research shows:1 according to complete the athletes after playing time feature analysis, athletes can in training improve turn around, knee lift and kick attack, speed, for body of the reduction stage completed time raise should be so as not to destroy the stability of the center of gravity of the body as a precondition to appropriate development.2 through to kick in subjects athletes on the joints of the lower limbs in average linear velocity analysis found and changes in the characteristics of the athlete upper limb basically conforms to the kinematics characteristics of kinematic chains, but the support of side leg and kicking leg side is slightly different. In the course of the use of rear kick, kick in the leg side is in line with the kinematic characteristics of the kinematic chain, and the support leg is in line with the distal end of the body due to the lag effect of passive traction.3 through to kick technology in the process of playing strike leg side in every link of the instantaneous velocity analysis, found that playing peak velocity of the technology in the process of knee joint and ankle joint in the knee stage, but does not appear in kicking stage. The reason is due to the kicking players in the process for controlling the stability of the center of gravity of the body, and take the active force sake.4 through the analysis on foot rear kicking the instantaneous speed of the kicking angular velocity of hip joint rotation and play technology in the proces, found a high correlation between the two. After playing the changes in the characteristics of the process of the body center of gravity is: Elite Athletes in the X axis(before and after), there will be the body center of gravity moved, on the Y axis(left and right) of the moving distance is smaller, in the Z axis(up and down) on fluctuations in minimum characteristics.5 through some of the physical test of athletes, found that: Athletes lower limb fast strength ability and after playing technique provided velocity of the knee and kicking speed are highly correlated; athletes procedural flexibility and after the completion of the play total time have a moderate degree of correlation; the core strength of the athletes and after the completion of the playing process in the body of the stability of high correlation.