1.研究的背景1999年开始实施新的排球规则(即比赛采取每球得分制,比赛中运用自由防守队员,以及发球擦网为好球等)对排球比赛、训练带来了巨大的影响和变化。[1]新规则的实施使竞争对抗性更加激烈,客观地促进和推动了排球运动的发展。新规则的实施给排球运动带来了新的生命力,使排球运动更加精彩激烈,更能适应广大群众的欣赏水平。 1. Background of the Study The introduction of the new volleyball rules in 1999 (that is, the ball-scoring system used in the games, the use of free defensive players in the games, and the ball-wiping net as a good ball) have had a tremendous impact on volleyball competition and training and Variety. [1] The implementation of the new rules made competition more competitive and objectively promoted and promoted the development of volleyball. The implementation of the new rules has brought new vitality to the volleyball sport, making the volleyball sport more exciting and more able to adapt to the general public’s appreciation level.