The effect of repeated sprint training on developing some of physical qualities and straight shot accuracy for juniors squash  Prof. Mohammed Ahmed  Prof. Mohammed Helmy  Prof. Kkaled Naeem Aly ABSTRACT: The research aims to study the effect of repeated sprint training on developing some of physical qualities and straight shot accuracy for juniors squash under 13 years, The researchers use experimental methodology with one group design and pre-post measurements, The research sample was chosen in Purposive method, (13) juniors squash registered in the Egyptian Squash Federation 2022-2023, The researchers add repeated sprint training ( 8 weeks by three training units per week) as a part of the training units to the basic program, the results of this study were repeated sprint training has a positive effect on developing some of physical of physical qualities and straight shot accuracy for juniors squash, The researchers recommend to use repeated sprint training on developing physical and physiological variables for squash players and compare it with another training styles which divided from High-intensity interval training on developing physical, functional and biochemistry adaptations for field hockey players, In addition to directing the results of this study to squash coaches to benefit from its results.