Determining the level of football players’ endurance in the laboratory and field conditions

It is shown, that to determine the potential of footbal players’ aerobic power capacity and development of their anaerobic energy supply mechanism may be limited to conducting research by using the technique of «Polar» OwnIndex (Fit test) in the laboratory. It is noted that the effectiveness of this method of diagnosis for the rapid assessment of the rationality of using tools and methods to maximize cardiorespiratory performance in the process of training activities and on the stages of selection.