Differentiated evaluation of external respiration status of volleyball players with a different type of blood circulation at the stage of initial training

The modern level of sports achievements is extremely high, that is why the intensive training modes and emulative cycles can be factors of risk of development of cardio-respiratory system pathology: they can cause disturbance of the function of respiratory system, limit physical activity due to development of bronchial obstruction, cardiac arrhythmia, arterial hypoxemia.