تأثير تمرينات القدرة الانفجارية للرجلين وبعض القدرات الحركية في تطوير العضلات العاملة على مفصل الركبة لدى لاعبي كرة القدم الشباب

Abstract

Football is one of the sports characterized by a competitive and intense nature, and it holds great importance for people of different races and languages. Games that require intense physical effort and vary according to the match conditions require players to be prepared to face these efforts in the best possible way, as any functional disorder will lead to a disruption of the physical and skill level of the players, meaning that players must be physically prepared in a way that aligns with the requirements. The research aims to prepare exercises for explosive power and some motor abilities in developing some of the muscles working on the knee joint in young football players. The experimental approach was used as it is the closest approach to solving the research problem. The researcher used one of the main designs of the experimental approach, which is the single-group pretest-posttest design. The researcher concluded that the exercises used in a scientific and regulated manner, using appropriate devices and tools that suit the capabilities and potentials of the players, are capable of developing the muscles working on the knee joint. The researcher recommends using the physical and motor exercises he prepared as they have a positive and noticeable impact on developing the muscles working on the knee joint.