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I、序文人在地上所作的移动运动虽有多种,但最普通的可举出走、跑。这种跑的运动也可作为在水平面上的连续跳跃来认识。在这种意义上,可以说三级跳远的运动方式是跑的延长,即三级跳远可以作为变异的连续跳跃,把它列入移动运动。在走或跑的运动中,发挥力量的是身体,尤其主要的是支撑腿的肌肉,它产生了正负两种机械功,结果使移动运动得以完成。在走、跑当中,机械功等力学的多种变量的定量化前
I, although there are many kinds of motions made by preachers on the ground, the most common ones are walking and running. This running sport can also be recognized as a continuous jump in the horizontal plane. In this sense, we can say that the sport of triple jump is the extension of running, that is, triple jump can be used as a continuous jump in variation to include it in the movement. In the walking or running exercise, to exert the power of the body, especially the main support leg muscles, it has produced two positive and negative mechanical work, the result of the movement to be completed. In walking, running, mechanical work mechanics, such as a variety of quantitative variables before