The research aimed to identify the effect of some KACIO exercises on the special physical variables and the digital level of the long jump youth under 16 years old, by designing a proposed training program using some KACIO exercises. The researcher used the experimental method, and the research sample was chosen in an intentional way from the long jump juniors under 16 years old, who are enrolled in the Dakahlia Athletics area and registered with the Egyptian Athletics Federation for the sports season 2020/2021, and they train at the Sinbillawain Sports Club. By choosing (7) juniors in a random way for the exploratory study from the research community and outside the basic research sample, and thus the basic research sample became composed of (10) juniors. Among the research tools: Determining the intensities through the CACIO device - special physical tests - measuring the digital level of the long jump - the proposed training program. Statistical treatments: mean, standard deviation, median, torsional coefficient, simple correlation coefficient, T-test, improvement ratios,% Among the most important results: - Katsuo exercises have a positive, statistically significant effect at the level (0.05) on the special physical abilities (muscular ability of the legs - transitional speed - maximum muscular strength of the legs - flexibility of the trunk and thigh) among the junior long jumpers under 16 years old. The presence of improvement rates for the dimensional measurement of tribal members of the basic research sample in the special physical abilities under study ranged between (5.58% - 34.20%). - Katsuo exercises have a positive, statistically significant effect at the level (0.05) on the digital level of long jump juniors under 16 years old. There is an improvement rate for the dimensional measurement of tribal members of the basic research sample at the digital level in the long jump, which amounted to (9.67%).