Effect of Using training program of high Intensity jump exercises on The Muscles of The Lower Limbs of Young Football Players

The current study aimed at identifying the statistical significances in some physical characteristics of lower limbs muscles of the two groups of the study; the experimental one which was subject to high Intensity jump exercises and the controlling one which was subject to the normal training program, through the results of the pre and post tests.
The research was executed on the scope of the study which was chosen intentionally representing the football team of young players in Alintisar School for the athletic semester 2008-2009 which consisted of 30 players. The sample of the study consisted of 24 players chosen intentionally and distributed randomly by using lottery method. The researchers used the experimental approach for its appropriateness to the nature of the study. They also used the following statistical means: arithmetical mean, standard deviation, percentage and t-Test.
The researchers concluded that high Intensity jump exercises achieved a significant variable in all physical characteristics (the horizontal explosive strength of the two legs, the vertical explosive strength of legs, and the strength that is characterized with speed when the pre and post tests of the experimental group are compared and for the benefit of the post test.