A study of the optimization of board striding for taking of posture in long jump by applying simulation computation

According to the characteristics of body movement at board striding for taking of in long jump, and by applying a multiple rigid body model and modem computer simulation technology, the authors probed into the characteristics of changing of long jump farness caused by board striding in different postures, SO as to seek for the optimal board striding for taking of posture, and revealed the following findings: different combinations of shank attitude angle and knee joint angle formed at board striding enable the body to reach the same farness, therefore it is obviously irrational to judge the performance of board striding technology based solely on the magnitude of board striding angle; at the moment of board striding for taking of in long jump, the magnitudes of influence of attitude angles of various body parts on long jump distance are different, the order of their importance is in turn the attitude angle of the shank of the take-of leg as the most important one, followed by the knee angle of the take-of leg, while the influence of torso tilting angle, thigh included angle and the knee angle of the swinging leg on long jump distance is relatively small; at the moment a long jumper strides on the board for taking of in long jump, there certainly are an optimal knee joint angle of the take-of leg and an optimal included angle between the shank and the ground, which enable the long jumper to reach the farthest long jump distance if he/she strides on the board in such a way.