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苏联体育专家乔里斯教授认为:理想的一跳要有10米/秒的助跑速度和最适宜的放脚角度这样才能达到9米。据报道,欧文斯的助跑速度达到10.97米/秒,倘若如此,他就能取得近10米的跳远成绩。根据乔里斯教授的推算,助跑速度为10.97米/秒,在准备起跳时通常会减少0.5—1米/秒。在这样情况下,及时做快速有力的蹬地起跳动作,可获得4.3米/秒的垂直速度,运动员就有可能跳到12米。按照乔里斯教授的看法,只有当运动员在助跑中充分发挥自己的快速能力,即不受限制地助跑到起跳板,并有一种快速有力、及时蹬地向上的感觉时,才能获得
Professor Jolies, a Soviet sports expert, believes that an ideal jump requires a speed of 10 m / s and an optimum foot angle of 9 m. It is reported that Owens’ run speed reached 10.97 m / s, if so, he will be able to get nearly 10 meters long jump results. According to Professor Qiao Li’s projections, run-up speed of 10.97 m / s, in preparation for take-off usually will be reduced by 0.5-1 m / s. In such circumstances, timely and vigorous kick-off action, get a vertical speed of 4.3 m / s, the athlete may jump to 12 meters. According to Professor Qiao Lisi, only when the athletes in the run full of their rapid ability to run to the starting plate without restriction, and there is a fast, powerful, timely manner, the feeling of being stepped on to get