尽管足球成为世界公认的第一运动,但人们对其技术基础理论方面的研究还须进一步努力,以期促进足球的教学与训练。例如,一脚球踢出后,它的力量到底有多大:至今仍众说不一,使人困惑不解。为解决这一问题,我花了几年时间对20名足球运动员(男17、女3名)进行测试和综合分析。这 Although football has become the first recognized movement in the world, people still need to make further efforts to study its basic theory of technology in order to promote the teaching and training of football. For example, after a kick kicked out, its strength in the end how much: so far still different, puzzling. To solve this problem, I spent a few years on 20 football players (male 17, female 3) for testing and comprehensive analysis. This