The research aims to prepare special exercises and to identify the impact of the proposed training curriculum on some variables Kinematics and achievement of effective running 400 metres to single out the research sample.

Research areas formed the human field Players of the Specialized School for Nurturing Sports Talent for Arena and Field Games in Maysan Governorate for ages (14-16 years) for a 400-meter run event for the 2022 sports year And the temporal domain for the period of 4/16/2022 to 7/5/2022 and the spatial field Maysan Olympic Stadium and Scout camp stadium for athletics in Maysan Governorate The scientific method The researcher used the experimental method in one group style to solve the research problem Research community and sample to choose The research community in the intentional way, which was represented by the players of the Specialized School for Nurturing Sports Talent for Arena and Field Games in Maysan Governorate for ages (14-16 years) for the 400-meter running event for the sports year 2022 AD. Their number is (8) players, and the number of the research sample was (6) players. Two players were excluded due to conducting the reconnaissance experiment on them, and they constituted (75%) of the original community. Either the most important conclusions are that the proposed exercises have contributed clearly and effectively to the development of step time. The proposed exercises had a clear impact in developing the rate of speed as well as the length of the step. The most important recommendations were the researcher recommends the Iraqi trainers to rely on effective modern training methods and include them in the training programs and the need to emphasize the development of kinematic variables during the training of the effectiveness of the 400 m run.