~ 119 ~ Journal of Sports Science and Nutrition 2023; 4(1): 119-124 E-ISSN: 2707-7020 P-ISSN: 2707-7012 JSSN 2023; 4(1): 119-124 Received: 16-05-2023 Accepted: 05-06-2023 Dr. Hameed Majeed Hameed Lecture, College of Education for Pure Sciences/ Wast University, Iraq Dr. Ali Falah Mohammed Assistant Lec. Al-Zahrawi University College, Iraq Corresponding Author: Dr. Hameed Majeed Hameed Lecture, College of Education for Pure Sciences/ Wast University, Iraq Training overlap and its impact to developing the special endurance for young football players Dr. Hameed Majeed Hameed and Dr. Ali Falah Mohammed DOI: https://doi.org/10.33545/27077012.2023.v4.i1b.160 Abstract The importance of the research lies in adopting the method of overlapping training to develop special endurance as one of the most important special requirements for soccer players, because raising the level of special endurance, which is mainly linked to the degree of functional adaptation, is reflected in improving the level of physical, skill, tactical and psychological achievement effectively throughout the time of the match, and this has an impact on improving the level of achievement for the player and the team alike. As for the research problem, it was represented in the low level of special endurance for the players, which appears in the clear decline in the level of performance, especially in the last third of the match, due to the weak level of special endurance for the players, which leads to slow recovery and early fatigue, lack of concentration and low level of overall performance (physical, technical, tactical, and psychological), which appears through random play, scattering of balls, frequent tackles, slow defensive and offensive activities, as well as the inability to implement modern tactics, which depend heavily on the application of the concept of comprehensiveness in the performance of tactical duties. While the objectives of the research were to develop a training curriculum in the style of overlapping training to develop the special endurance of football players, as well as to identify the impact of the training curriculum in developing the special endurance of football players. Wasit province, which numbered (18) players. The most important conclusions were: The development that occurred for the research group in the level of endurance as a result of the special effect of the vocabulary of the training curriculum in the overlap style. The researchers also recommend the need to adopt the training overlap method and the components of the training load by the trainers when training levels corresponding to the level of the research sample. Keywords: Training overlap, special endurance, training method. 1. Introduction The development of global sports achievement in recent decades did not come randomly, but rather was an inevitable result of the use of scientific research methods and proper planning, by employing the foundations and principles of modern sciences such as the science of training, physiology, statistics, biomechanics...etc. Football was and still is the first popular game in the world, and the modern requirements in this game have created a great need to prepare the players with high physical numbers, especially since the changes in modern football achievement are linked to the acceleration of defensive and offensive activities with a high level of strength, as well as a high level of performance skill players, and the adoption of the total ball method (comprehensiveness in the performance of tactical duties) and the player's occupation of more than one position in the team, so we see the defender actively contributing to the attack and the striker retreating to defend his team's goal, despite the player's endurance of this high effort; He must maintain his physical fitness throughout the match (90-120) minutes. Here, the importance of special endurance associated with the degree of functional adaptation appears, as one of the most important factors affecting the level of performance of the players during the two halves of the match, which was mentioned by (Al-Rubaie and Al-Mawla, 1988: 184) [7] “The player with special endurance below the level faces the largest oxygen debt, which leads to slow The state of hospitalization and early fatigue. The importance of this research lies in the importance of special endurance and the importance of striving to find the best ways and methods to develop it as one of the most important special requirements for football players. Players who have a high level of special endurance are more able to implement what is required of them during the match and give their coach more opportunities to choose the type of plan and method of play, because raising the level of special endurance.