Mechanisms of urgent adaptation of cardiovascular system in female athletes at latitudinal relocation
Using the biorhythmological approach, the researchers estimated the impact of the zone time offset on the state of adaptive capabilities of the body of young athletes, residing and practicing in the conditions of the Khanty-Mansiysk Autonomous Region, after flying across several time zones. Physiological indicators were measured in 18 female athletes of 16-18 years of age specializing in sprint kinds of athletics. The results showed that there were no significant changes, much less structural failure of the rhythm, in either of the groups. This means that the three-hour offset of the zone time is not a significant load for this age group, and functional and adaptive capabilities of the body of athletes correspond to quite a satisfactory level. However, the search for the causes of the dynamics of the leading parameter of the human body state vector (HBSV) in the four-dimensional phase space, observed during the functional stress tests and reflecting the changes in the regulatory signal direction, showed that, on the one hand, in terms of its physiological mechanism, the hemodynamic response to exercise was quite adequate to the capabilities of the physically trained organism, providing blood flow due to the cardiac output. On the other hand, the functional hemodynamic indices, reflecting the functional load on the heart, even at rest, are so high that their increase in response to high-intensity exercise is not possible, which probably leads to the involvement of the compensatory regulatory mechanisms.