The objective of the study is to design a specialized training program in modern weighting methods for under-21 soccer players to develop muscular strength and to identify the effect of the training program on weighting exercises on some physiological variables (some aerobic and anaerobic abilities such as VO2max heartbeat and backstage). Researchers in this study that weight training for soccer players will have a clear impact on both the development of muscle capacity and improve some functional abilities. The experimental method was used to design two samples, a experimental sample and a control sample of under-21 soccer players who were selected by a team of Mustaganem teams. Each sample consisted of 18 players. The experimental sample was applied to the weight and control program. For four months. The study showed that the experimental sample achieved a significant increase in muscle strength measurements as well as some physiological variables in all measured tests compared to the control sample. This is the result of the proposed training program applied to the experimental sample.