The effect of a training program on the results of anaerobic fitness tests and the speed endurance index of 400-meter runners

Scientific advancement and research in all disciplines have recently brought about radical changes in some lifestyles, including the sports training sector where much interest has been paid and sophisticated training methods discovered. And these modern methods combined have successfully enabled athletes in various sports to elevate their levels, especially athletics which has achieved unprecedented results at the Arab, Asian and global levels. Because coaches can have a great solution selection and include them scientifically into high-performance maneuvers. This research contributes to the identification and creation of a specific training method which can enhance healthy athletes' performance in the 400m freestyle event. This is done with the strategic implementation of specialized speed development training. This research aims to investigate the influence of these particular exercises on enhancing physical fitness and consequently the performance level achieved in this distance by runners, so that competitive performance is optimal in this modality. The goal of the research is to investigate the effect of using some special exercises to develop speed strength and achieve 400m freestyle sprint for youth category as well as identify the effect of these exercises in developing explosive power and speed-strength characteristics for tomorrow's sample.