The research objectives were defined in preparing fartlek exercises in both ascending and descending styles, to develop coordination, balance, and Lay-up shot for young basketball players, and also to identify the effect of the ascending and descending Fartlek exercises on the development of coordination, balance, and Lay-up shot for youth basketball players . The researchers used the experimental approach to design the two equal groups with the pre and post-tests, and on the main research sample of (12) players from the Al Hilla Sports Basketball Club, the youth group, aged (16-17) years, the sample was divided into two groups with (6) players for each group, and the first experimental group followed the Fartlek exercises in an ascending manner, while the second experimental group followed the fartlek exercises in a descending manner, and a parity process was performed in the pre-tests, and then implementing the vocabulary of the fartlek exercises in the ascending and descending methods on the first and second experimental research group within a period that lasted (6) weeks and at (3) training units per week, thus the total number of units reached (18) units and the time of the educational unit was (90) minutes