The Effect of Circuit Training According To the Variation of Speed and Time in Improving the Speed Strength, Specific Endurance and Achievement of 400 M Freestyle Runners Under 20 Years

Abstract

This study included an introduction to sports training and its effective importance in the development that occurs at the level of sports achievement, and it means developing physical, skill and psychological efficiency. The plan for runners to be able to meet the requirements of the race and achievement. In addition to the importance of using modern and advanced training methods, especially the various circuit trainings and the extent to which these trainings are linked to precise and important characteristics of the race such as speed and time due to their effective and great importance in improving the requirements of the race such as rapid strength and special endurance and the real and ideal knowledge of the impact of these trainings in improving the achievement of 400m freestyle runners under 20 years old. and The research problem was summarized by the researchers following the training of the runners of this race and conducting exploratory experiments for a number of runners. It became clear to them that there is a clear weakness in completing the 400m freestyle, as a result of the weakness of the physical abilities specific to the stages and completion of this race, including rapid strength and special endurance. Accordingly, the researchers prepared various circuit training and regulated the intensity and loads of its exercises during the training units according to speed and time. To develop the variables under study that contribute to improving the achievement of that race. The study aimed to prepare various circuit training according to the variation of speed and time, and to identify their effect on rapid strength, special endurance, and achievement of the 400m freestyle under 20 years. And to identify the superiority of the effect of the training of the control and experimental groups in improving the research variables under study. The researchers assume that there is a positive effect of the various circuit training according to the variation of speed and time in improving rapid strength, special endurance, and achievement of the 400m freestyle under 20 years, and that there is an advantage for the training of the experimental group over the control group in all the variables studied. The researchers used the experimental method in the style of two equivalent groups with pre- and post-tests. The researchers identified their research community as runners of the Karbala Governorate clubs in athletics, numbering (10 runners), and they were all chosen using the comprehensive enumeration method to represent the research sample at a rate of (100%).

The researchers concluded that circuit training, which varies in speed and time, has a positive and significant effect on improving speed strength, specific endurance, and the 400m freestyle under 20 years of age. They recommend that this training method should be used with different races and in developing different age groups.