Final throwing is the main part of javelin throwing, so it is analyzed by simultaneity means of 3D motion and EMG analysis systems. The results showed that: first, during the final force phase, the velocity of body gravity loss was serious. At the moment of the full bow formed, joint velocity intersected at one point, the body was relatively motionless, disarticulated phenomenon appeared. There was significant differences in the velocities of right knee and the right ankle joint in different phases(P<0.05); second, there was also significant differences in the maximum stretch angle between the testees and the excellent athletes from home and abroad(p<0.01). The force angle of trunk and the back leaning angle of body was close; third, among the main muscles group of the upper limb, the middle of the deltoid was activated first, then pectoralis major, triceps brachii, biceps brachii; The inactivation order of the upper limb was pectoralis major, biceps brachii, triceps brachii, the middle of the deltoid muscle; fourth, among the main muscles group of the lower limb, rectus femoris was activated first to make the thigh to fix at the hip joint and complete the transient buffer action. The first activated rectus femoris was also the first inactivating muscle. Vastus medialis still worked for a long time after the inactivating of the biceps brachii. That could provide us with good news for preventing motility trauma and designing training scheme.
© Copyright 2008 Proceedings of First Joint International Pre-Olympic Conference of Sports Science and Sports Engineering. Volume II: Bio-Mechanics and Sports Engineering.. Veröffentlicht von World Academic Union. Alle Rechte vorbehalten.