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从第二次生长突增开始到生长完全停止,称为青春期。一般女孩从10～12岁开始到17～19岁,男孩从13～14开始到18～20岁。青春期是由儿童到成年的过渡时期,是从第二性征开始出现到性成熟及体格发育完成的一段时期。在青春期,科学的安排体育锻炼对促进青少年身心良好发育有积极的作用。中学生在学校中经常进行的运动主要集中在田径、游泳和各种球类等项目上。通过这些体育运
From the second growth surge began to completely stop growth, known as adolescence. The average girl starts from 10 ~ 12 years old to 17 ~ 19 years old, boy starts from 13 ~ 14 to 18 ~ 20 years old. Adolescence is a transitional period from childhood to adulthood, starting from the secondary sexual characteristics appear to sexual maturity and physical development completed a period of time. In adolescence, scientific arrangements for physical exercise to promote good physical and mental development of adolescents have a positive effect. Middle school students in schools often carry out sports mainly in athletics, swimming and various ball games and other projects. Through these sports