To Some Outstanding Man's Javelin Athletes Of Our Country Two Steps Of Last And Kinematics Of Exerting Oneself Technology Finally Is Studied To Throw The Step

Content, this text of research to is it exert oneself to our country some outstanding man throw step , javelin of athlete technology carry on kinematics analyse finally to have two more last, aim at drawing the technical parameter, offer the concrete quantization index for coach's training, make athlete's technology perfected further. Stand darts finals the top 8 athlete as the research object with National Track and Field Championship Nanjing, adopt JVC9800 high-speed camera and shoot and use the SIMI-motion video to analyze the system to analyze the picture at the speed of l00fp/s. The result of study shows: (1) The left leg of cross step stage pedals and stretches the opportunity improperly, the takeoff angle is too big, the right leg swings the vertical strength of dividing too big, result in soaring too high, it is heavy for weight to rise and fall, increase weight horizontal velocity lose; (2) The run-up grows up step by step finally, left leg have not enough to is it insert to lay , cause right foot form support time to be long , can't enter one pair of supporting phases as soon as possible , in order to offer firm support hard finally, the arrestment momentum of the low limbs transmits the result unsatisfactorily. (3) It is not enough to surmount degree of apparatus hard finally, exert oneself the job distance short finally, will inevitablely influence the darts skill tempo ; (4) While throwing the left foot of the last step of step and landing, the left knee joint buffers the range largly, is it stretch range to be little to pedal, left stability support of leg is it stretch ability to be poor to pedal; ( 5). Generally have every link of throwing arm that has not had an effect and transmitted momentums sequentially in exerting oneself whiplash technology finally, make the whole whiplash movement result not good. ( 6). The javelin is sold to sell the angle to lean towards largly in the twinklingof an eye, the angle of attack is rational basically.