英文摘要
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The aim of this research is to compare the parameters of three-dimensional kinematics between shoulder, the elbow and wrist joint between upper limbs when forehand drive. The mean age 21.6 ± 5.5 years old, height 177 ± 6.3 centimeters, weight 76 ± 6.7 kilograms, length of playing a ball game 12.8 ± 4.9 years. Research this adopt three-dimension dynamic analysis amount examine system carry on table tennis forehand loop driving and forehand fast loop driving, shoot frequency as 240Hz. The found is:1. Two kinds of forehands driving the ball, the main difference of movement time in different cycles is movement of stage.2. Change in terms of different cycles of angular motion of shoulder joint, the ones that learn and drive the ball in two kinds of forehands swing the bat in the route all in order to have to the left after right, swing the bat orbit and contained angle relatively heavy desk-top at the loop of drawing, at the accelerated loop of drawing, is it make issue uphold angular speed to be relatively heavy, reach, Show the speed of swinging the bat of drawing the fast loop is very fast.3. Drive the forearm to charge movements while making in the twinkling of an eye with elbow joint, bucking angle and the human body largest strength angle are identical to bat entirely.4. When the angular motion forehand of wrist joint drive the fast loop, one is being relatively big in changing ulna deviation angle amount which follows one to swing the bat and bat, because while driving the fast loop, in order to make the ball produce enough impulsive force forward, so obvious and relatively big on one of sport ranges to ulna deviation. And forearm draw ball course keep supination state, utilize wrist joint and forearm to control and make the surface angle, is it draw accelerated loop slope angle to be relatively little, do benefit to and swing the bat forward to make.
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