This study aims at the effect of intensive decentralized training on developing the speed of foot movements and the coefficient of vertical resistance for squash beginners. The research sample was chosen by the intentional method, and it included (10) squash juniors under 15 years old at Wadi Degla Club, Maadi branch, who are registered in the Egyptian Squash Federation 2022-2023 AD, and they were divided into two experimental and control groups. The training program lasted 8 weeks, with 3 training units per week. The most important results of the research is intensive decentralized training that has a positive effect on the development of the speed of the feet's movements, some physical abilities (muscular strength, interactive agility, motor speed of the two legs, muscular ability) and the vertical resistance coefficient of the squash juniors. Statistically significant differences were found between the experimental and control groups in Telemetry of the speed of the feet's movements, some physical abilities (muscular strength, interactive agility, movement speed of the legs, muscular ability) and the coefficient of vertical resistance for the squash juniors in favor of the experimental group.