论文部分内容阅读
一、稳固支撑的重要性 在器械出手时,人体通过手臂给器械以作用力,器械也同时会给手一个反作用力,器械反作用力顺着手臂传到人体上,如果此时人体支撑在地面上,地面会因器械的反作用力而同时产生一个等大反向的反作用力,它们可以相互抵消,不会影响器械飞行的远度。如果在器械出手时人体失去支撑,那么器械的反作用力会使人体向后向下运动,使标枪的出手速度减慢,这必然影响投掷远度,所以器械出手前人体稳固支撑对投掷技术起着很重要的作用。 二、左腿支撑用力的作用 (一)能够充分利用助跑速度 最后用力的左侧支撑技术是反映助跑与最后用力衔接好坏的一个重要标志。能否把助跑速度更多地
First, the importance of solid support In the equipment shot, the human body through the arm to the device to force, the device will also give the hand a reaction force, the device reaction force along the arm reached the human body, if at this time the human body is supported on the ground , The ground will be due to the reaction force of the device and at the same time produce a large reverse reaction force, they can offset each other, will not affect the distance of the instrument flight. If the body loses support when the device is shot, the reaction force of the device causes the body to move backward and downward, which slows the speed of the shot of the javelin, which inevitably affects the throwing distance. Therefore, the stable body support before the device is shot plays a role in the throwing technique Very important role. Second, the role of the left leg support force (a) to take full advantage of the speed of the last run of the left supportive technique is to reflect the end of the run-up and hard an important symbol of convergence. Can you put the running speed more