Correlation of CNS functional state and performance efficiency with cardiovascular system indicators in students of Khanty-Mansiysk State Medical Academy

The aim of the work is to reveal the correlation of CNS functional state and performance efficiency with hemodynamics and heart rate variability in students of Khanty-Mansiysk State Medical Academy. Materials and Methods. Students of the Khanty-Mansiysk State Medical Academy were examined, including 35 young males and 61 young females. We examined CNS functional status and performance efficiency using variational chronoreflexometry method based on the parameters of a simple visual-motor reaction. Daily mean, as well as day and night values of blood pressure and heart rate were established during 24-hour monitoring. Pulse oximeter ELOX-O1 was used to determine the parameters of statistical and spectral analysis of heart rate variability. Correlation of CNS functional state and cardiovascular system indicators was studied. Results. In young men, the increase in neural response stability and functional capability level of the formed functional system combined with increase in heart rate and decrease in DBP at night. In connection with the increase in DBP variability and decrease in the degree of night DBP reduction, the rate of a simple visual-motor reaction also decreased. In young women decrease in the reaction rate and the level of nervous system functional activity combined with SBP increase and the time of systolic and diastolic blood pressure load. In young women CNS parameters worsened in connection with significant night DBP decrease. In young men, CNS parameters increased with increase of sympathetic influence and centralized heart rate monitoring; but they decreased with the increase of parasympathetic activity. Conclusion. We found out significant correlations between CNS functional state and performance rates of cardiovascular system in medical students, who study in severe natural environments. As for monitoring hemodynamic parameters, young women demonstrated higher correlation rates. Correlation of CNS functional state with the heart rate is also revealed in male students.