The research aims to reveal the effect of the Two Interval Training Style (ascending and descending) on a number of physical variables for football players. The researchers used the experimental method for its relevance and nature of the research. The experiment was carried out on a sample of Al-Fatwa sports club football players who applied for the football season (2021-2022), which numbered (24) players, and they were randomly divided into two (experimental) groups with (12) players for each group. Homogeneity was achieved in the variables (age, height, mass) as well as making parity between the two research groups in physical variables. The researchers concludes that the ascending Interval method achieved an improvement in all physical variables. By comparing the results of all the pre and post-variables for the players of the first experimental group. The Interval of training descending method also achieved an improvement in the variables of prolongation speed and general prolongation. That is by comparing the results of all the pre and post-variables for the players of the second experimental group. Where the second experimental group that implemented the Interval of training descending achieved a better improvement than the first group in the variable speed prolongation. This is done by comparing the results of the post-test for the two groups.