The Use of testing loads to determine the functional state and identify the functional capabilities of athletes body is necessary in order to improve the quality of the training process and achieve high sports results. For this purpose it is necessary to choose appropriate testing loadings which will have scientific and practical value, both at survey of athletes, and for modification and additions in training occupations. When determining the functional state of the athlete's body, it is advisable to focus on testing loads of a dynamic nature. In this case, the individual characteristics of athletes associated with adaptive relationships between the components of the cardiorespiratory system are revealed. They are manifested in a variety of response options, depending on age characteristics, sports and physical activity capacity.