許多周期性運動項目,其中包括游泳項目,多年訓練的大部分時間處于性成熟期。性成熟期的一個特點是機體各形態、機能系統發育出現异時現象。處于青春期的每個孩子生物成熟期、成熟速度是不同的。生物成熟期及成熟速度是 Many cyclical sports, including swimming, spend most of their years of training on sexual maturity. A characteristic of sexual maturity is the appearance of different forms of the body, dysfunctional systems appear different phenomenon. At the biological maturity of each child in adolescence, the rate of maturation is different. Biological maturity and maturity speed is