The research aims to identify the effectiveness of complex training in developing some physical abilities, physiological variables, and the digital level of the 800m runners. The forces of the 2020/2021 season, from the age groups under 20 years old, and the sample included 10 players, they were divided into two groups, one experimental and the other controlling, and the strength of each of them reached 5 players, and there are statistically significant differences between the tribal and remote measurements in some special physical abilities In the 800m runners ran, there were statistically significant differences between the tribal and remote measurements in some of the physiological abilities of the 800m runners “lactate concentration in the blood after 800m running, anaerobic capacity, aerobic capacity and vital capacity” while there were no statistically significant differences between the tribal and remote measurements. In, resting pulse rate, systolic and diastolic blood pressure, conducting studies on the effect of compound training on some physical and physiological abilities. In different age stages.