Effect of protective training to reduce some of the knee joint injuries on the artificial grass playground on the junior soccer players

Football is considered the number one popular sport in most countries of the world, due to its characteristics that distinguish it from other sports. The level of performance in football in recent years has reached a stage of outstanding general performance in all physical, psychological, mental and tactical aspects, due to This aims to develop scientific equipment, auxiliary tools and scientific methods in training players, as well as the results of studies and scientific research. Sports injuries are considered one of the most important factors that lead to the exclusion of athletes and their isolation from regular training operations or participation in competitions. It is also considered one of the most important problems facing all workers in the sports field. It is also necessary to identify the factors that help the emergence and spread of injuries and know their causes, places and types, especially for football players, injuries may be one of the reasons for their isolation or exclusion from participating in sporting events, and thus losing teams