[Response of the functional system of respiration to the cyclic changes of the hormonal state in women].

Examinations of the respiration, blood flow, blood respiratory function, oxygen intake, mental and physical performance of 116 female athletes going in cyclic and acyclic sports during a menstrual cycle significantly altering the female status ascertained that the status of the respiratory system varied with these changes. High economic benefits of respiratory function and oxygen regimens of the body, high breathing reserves in the postmenstrual and postvalutional phases of a menstrual cycles were found to make the female athletes show higher working capacities in these phases. In addition to instrumental determinations, computer-aided simulation of the body's oxygen regimens and respiratory functional system was used to calculate oxygen parameters and the magnitude of respiratory functional changes during a menstrual cycle.