Sports Biomechanics Analysis Of The Fast Cadence And Spin Moving

Quickly turning body is a movement need every parts of body cooperated with eachother fastly、flexibly changed the original state use the foot as the axis. During the movement,if we can,t change the original state, we can not finished the technical movement. and win thegame.Spin moving can make the game stop or more fierce, so what is relevant with the spinmove,s speed? How to make the turning more quickly? The gravity of whole body and thewhole muscles,force effected on feet, and what kind of low for the pressure on the footdistribution?In this paper, we use the camera system and foot pressure insole system tested andanalysis our college，s seven level2athletes, they was in the three kind of posture.The result is:1.If two feet stand in parallel, when turning to the left and moving, the focusdisplacement obviously show twin peaks, and with the increasing the rotation Angle the rangeof fluctuations are more and more small. the mean is in the turning and moving, as theincrease of the rotation Angle,The height of the focus more and more low. And in the processof turning to the right, the fluctuations of twin peaks are clearly become smaller. along withthe increase of the rotation Angle, the twin peaks are more obviously. With the increase ofrotation Angle the time of the turning are longer. when two feet standing around,the bodysfocus should down frist, and then raised gradually. In the all moments, with the rotationAngle increasing, when the supporting legs take the frist step,the high of the focus are reduce,and the bigger of the rotation Angle the lower of the body,s focus when take frist step.2.In this three position, the fastest position is the third, which two legs are around. In theall movements turn to left, the left legs are moving, the right legs are supporting, and turn tothe left are opposite. Its mean when turn to which side,which side,s legs are moving frist, theother sides are are supporting.3.In the process of the turning, the knee of the moving leg should move fast、early andlarge extent, the knee of the supporting leg should move fast,and the heigh should low, notappear pause. In the decline, the two hip should down small, and the position should balance.In the rising, the hip,s moving range, the moving side should less and early then thesupporting side.4.Along with the increase of the rotation Angle, shoulder and hip axis Angle alsoincreases, both of them Keep the rotating time also decreased, two axis maintain the greatAngle time are growth.5.In the process of turning, the pressure area of bearing mainly for the T1, M1, M2,andM3four areas.