The results of the long-term researches of the same pupils, carried out from 1989 till 1999 are presented in the article. The experimental group included pupils who visited occupations on the power training besides lessons of physical culture two times per one week (244 pupils). The control group included their coeval, visiting only the lessons of physical culture (333 pupils). The technique of the young weight-lifters training, stated in the various works of the author of this article (Leonid Dvorkin) was used in the basis of power training.