一、前言随着科学技术的迅猛发展和在体育中的广泛应用,体育运动发生了飞跃性地变化。具体表现在各运动项目的竞争性越来越激烈了。就篮球运动来说,也进入了一个向快速、高空和激烈对抗方向发展的崭新时期。现代篮球比赛始终是在高速度,高强度中进行的,因此,为了至始至终地保持比赛的快节奏,采取频繁换人,充分发挥全队力量,己成为当今篮球运动发展的一个新趋向。从不久前结束的《1984年北京国际女篮邀请赛》和《奥运会篮球决赛》(1984年)上,我们可以看到,国家队和国家青年队在大部分的比赛时间里,只有六一七人上场作战,既使换人也大都是在主力队员受伤或5次犯规等不得已的情况下进行的,这对我们在队伍建设、人才培养、技术提高和比赛实力增加等问题上都是不利的。这种问题的存在在我国是具有普遍性的。这已成为我们同世界强队 I. Introduction With the rapid development of science and technology and its widespread application in sports, sports have undergone dramatic changes. The specific performance of the sports in the increasingly competitive. In the case of basketball, it has also entered a new era of rapid, high-altitude and intense confrontation. Modern basketball games are always carried out at high speed and high strength. Therefore, in order to keep the fast pace of the game from beginning to end, taking frequent substitutions and giving full play to the strength of the team has become a new trend in the development of basketball today . From the “1984 Beijing International Women’s Basketball Invitational” and “Olympic Basketball Final” (1984), which was concluded shortly ago, we can see that during the majority of the competition time, the national team and the national youth team only have 617 Playing field operations, even if the substitutions are mostly in the main players injured or foul five times and other last resort, which for our team building, personnel training, technical improvement and competition strength problems are adverse. The existence of such a problem is universal in our country. This has become our strong team with the world