Biomechanical Study Of The Take Off Action Of The Trampoline Athletes-Zhou Xinyi

Objectives:The2009international gymnastics federation trampoline new scoring rulesincreased the "high points" of a complete set of action. Vacated height and the take-offtechnology of the trampoline athletes have a very important links. The method of sportsbiomechanics is used to study the take-off technology moves of the trampoline athletes.Methods: Selecting the research subjects, a digital camera was used to record the action ofthe athletes, and then the data was imported into the Ariel, a three-dimensional image ofanalytical system and then kinematic analysis was performed. The LifeMOD multi-rigid-bodydynamics simulation software was used to establish the trampoline athlete multi-rigid-bodydynamics model on the last jump and then the data was preliminarily analyzed.Results: The use of Ariel three-dimensional image for the analytical system gain the dataanalysis of kinematics of the last jump and811group action before the take-off technology ofthe trampoline athletes. When Zhou XinYi doing811group action before takeoff, the centreof the net pressure migration shift is a bit big, with an early pedal extension and no pressurenets buffering stage. And in the stage of taking-off from the nets, the horizontal speed of thefocus is too big. The use of LifeMOD multi-rigid-body dynamics simulation softwaretoestablish the trampoline athlete multi-rigid-body dynamics model, a three-dimensionalimage of the analytical system results verify the reliability of the model, and analyses theparticipating muscle of the trampoline athletes.Conclusion: Zhou XinYi’s body posture, the transfer of the center of gravity of thepressure nets, hip, knee, ankle are to be further improved; Ariel three-dimensional imageanalysis system and LifeMOD software are first jointly used which successfully established aathletes multi-rigid-body dynamics model. With the help of this model as a result, the takeoffaction of the trampoline athletes is simulated, and is compared with the data from thethree-dimensional image analytical system. The result verified the reliability of the modelsand this provided a new insight into the trampoline research.