Under The Tae Kwon Do Axe Kick The Technical Movement To Swing The Leg Kinematics Research

Uses biomechanics of sport research means and method , adopt three-dimensionmake a video recording , measure technology get 6 Jilin Province split thetechnological picture of movements under the outstanding Tae Kwon Do athlete,employ U.S.A. A P A S vision to analyze network analysis to make the movementcharacteristic which splits technology. Offer the theoretical foundation for teaching ofTae Kwon Do , scientific training and skill hit actual combat. While splittingmovement technology under finishing , making should try hard to be in the buckingstate to split the knee joint, so as to reduce the inertia of rotating , accelerate rotatingthe angular speed . Should strengthen the big joint to exert oneself voluntarily , thepotentiality to give full play to big joint. Should emphasize every nearly end linkapply the brake , make moment of momentum of human body give end link far withmore rational route transmission, improve the movement pace effectively, increase theresult of attacking . Aim at , split difference and common characteristic of technologyfind out , summarize with high quality finishing sport law and technologicalcharacteristic of movement this, it influences the kinematics parameter which splitstechnological movements to make , offer quantitative data and theory for teaching oftae kwon do and training to consult .Studies have suggested: Of every joint curve, the pace of hip joint is smaller andnot changing much;The paces of knee joint , ankle joint and tiptoe are obvious incurvilinear motion;Knee joint up to the peak value of pace early , then moderate ,ankle and tiptoe nearly reach the pace maximum at the same time during the course ofproposing the knee, later dropped rapidly, the tiptoe pace increased but not reachedthe maximum again at the time of hitting the target. Characteristic analyze come ,watch from time, whole movement 0.08s, person of 0.55 s, start stage 0.05s , personof 13s , mention knee stage 0.02s , person of 0.37 s , play stage of hitting as 0.02 s ,person of 0.05s. Finish , down , split movement spend time to finish , down , splitmovement decisive factor of qualityFrom swing leg hip , knee , ankle , tiptoe displacement come , watch ,displacement 0.93m of hip joint, the displacement 1.58m of knee joint, thedisplacement 2.28m of ankle joint, the displacement of tiptoe is 2.43m. It influenceswing leg supply with from factors main height of athlete the long with flexibility inleg. Tae kwon do down attack distance to split movement greater than back leg movecrosswise , play obviously. According to swinging the angle change of leg joint, hipjoint corner change in start stage withdraw knee stage start to have a prominent crestthe end curve, the overall range that increases is 14.3°士 5.0°;According to anglechange of knee joint , swing leg minimum knee corner average 84.3°士 7.6° withdrawknee. Split in movements under finishing the tae kwon do, the thigh is waved beforebeing accelerated at first, the shank of bucking of knee joint is folded. Reduce radiusof rotating to the hip joint of the shank, help to improve the pace which swings theleg.