The Exercise Technique Research On Bouble Back Somersault Pike Position In Trampoline

Our country has got attracting worldwide achievement in a short time of 10 years since the foundation of the trampoline team formally in 1998.On Beijing Olympiad in 2008,our team got two gold individual medal.The training technology have got a qualitative leap also.Bue the evaluation index in single movement techniques of each link.In this paper,the author analyzes the relationship among a single action,the evaluation index in single movement techniques of each link and movement quality.By the method of literature research,expert interview,image acquisition and analysis,logical analysis and mathematical statistics and number reason statistics.The writer try to verify the relation between the early our country bounding table athlete two cycles jackknife,pike revolution of backward somersault kind action technology every link kinematics parameter and action effect.By the fact that 720'video frequency carries out motion on bounding table motion two cycles jackknife,pike backward somersault truck rotation,turn,twist, Mechanics analysis ascertains every link valuation index,the reference providing science for our country bounding table motion training basis. Research results show that:4.1 The double back somersault twist720°(1+3)Once pressing net Keep every arthrosis in certain angle,the best pressing angel is about 87°-88°.Go kicking and stretching as the perpendicularity acceleration is zero.Pressing net with entire sole.The less pressing angle and earlier kicking lead to the bad net-pressing. 4.2 The double back somersault twist720°(1+3) Jump up as the best away angle(27°-31°),keep the arms symmetrical and head upright. Straighten the hip keep the knees arch forward superjacent.Need to avoid appearing to take off twisting on the net.4.3 The double back somersault twist720°(1+3) That picked posture takes form is behind 180' the first truck rotation,turn,twist,the body is prompt when overturning 360' and open up,the exhibition body clears out an altitude when being over approaching the maximal altitude, overturn subsequently and twist to carry out the speed twisting at the same time are quick than the speed overturning,the first 180' truck rotation,turn,twist momentum comes into being from coming from rapid swing of pair of arms,the articulatio coxae bending and stret ching comes into being about 540' truck rotation,turn,twist momentum distance later.4.4 The level displacement is related to athlete self's body control ability, space bearing feeling,physical constitution and psychological quality. More improves should get in ceaseless exercise.4.5 The double back somersault twist720°(1+3) The time using is almost equal.As the reasonable time arranged theⅠandⅡperform comparatively consummately.