Author(s): Dr. Ali Hussein Sagheer, Amjad Nsaif Jasem and Abbas Ali lafta

Abstract:
That the results of many scientific, educational and psychological studies on the existence of individual differences among the competitors who are in one age stage, for the purpose of reducing energy expenditure with the least possible effort when delaying the appearance of fatigue, as well as ending the race with the least effort and achieving the best achievement for a special performance of the endurance capabilities of the event, Therefore, the importance of the research lies in laying down correct scientific foundations when testing an effective, effective, effective and appropriate training method through the application of the use of effective and high intensity exercises when determining the time period for critical speed performance in developing the special endurance capabilities of running a 400m sprint for young men, Thus, the study makes a serious contribution to developing achievement and maintaining the rhythmic performance of jogging by improving the internal special abilities of different training stimuli. The problem of the research lies in the lack of use of high intensity interval training methods through different high intensity distances, and this is what prompted the researchers and the investigation for an effective training method. And it affects how the performance time is used for special exercises of different distances of high intensity, according to determining the time period for the critical speed. The aim of the research is to prepare a curriculum using high-intensity different distances exercises to develop special endurance according to the development of critical speed and achievement in a 400m sprint. And to identify the effect of these exercises with special exercises at different distances on the development of abilities for special endurance and the achievement of a distance of 400 meters for the sample members. As for the imposition of the research, there are differences and statistical significance between the tribal and remote tests in the research variables and in favor of the post test. As for the third chapter, it included the research methodology and special tests. As for the recommendations, it was to emphasize the use of exercises with special exercises of different distances to develop special endurance capabilities according to critical speed. And the completion of a 400-meter sprint for the sample.

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