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首页> 外文会议>International Symposium on Biomechanics in Sports vol.1; 20050822-27; Beijing(CN) >FORCE PRODUCTION IN THE FIRST FOUR STEPS OF SPRINT RUNNING
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FORCE PRODUCTION IN THE FIRST FOUR STEPS OF SPRINT RUNNING

机译：SPRINT运行的前四个步骤中的强制生产

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摘要

The purpose of this investigation was to understand how the athlete produces acceleration during the first steps of sprint running. One athlete performed four starts from starting blocks over a series of four force plates. Horizontal impulse (which directly relates to the acceleration of the athlete) gradually decreased after leaving the blocks, while this decrease was transferred to a gradual increase in vertical force production to support the small but required vertical movement of CM in order to increase flight time (to gain longer steps). It also seems that the body can compensate for some technical mistakes during the performance, as the results revealed that an extended braking time in one step yielded a reduced braking time in the next step. This implied that the increased time in the contact was used to get other body parts into more favourable positions for the next step.
机译：这项调查的目的是了解运动员在短跑跑步的第一步如何产生加速度。一位运动员从一系列四个测力板的起跑器进行了四个起跑。离开障碍物后，水平冲动（直接与运动员的加速度直接相关）逐渐减小，而这种减小又转化为垂直力产生的逐渐增加，以支持CM微小但需要的垂直运动，从而增加飞行时间（获得更长的步骤）。结果也表明，车身可以弥补表演过程中的一些技术错误，因为结果表明，延长制动时间会降低下一步的制动时间。这意味着接触中增加的时间被用于将其他身体部位置于更有利的位置以进行下一步。

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