Puschil Y., Liashenko V., Bondar О., Didkivskyy A.

Oles Honchar Dnipropetrovsk National University


The modern pace of life requires the appropriate effeciency of training process, the main indicators of which are the level of physical and mental performance as well as educational and labor activity of students. The effectiveness of current adaptive reactions in the body of a young professional is defined by the relationship of neural properties, autonomic reactions and personal settings, which together provide coordinated mental and physiological functions. Neurovegetative imbalance reduces adaptive capacity, influences the performance of physical and mental activity, prevents adequate perception of the new material. Based on this, the neurovegetative features of students in the humanities were monitored.

The study involved 15 boys of the 3rd year of study (aged 18-19 years) of the Humanities Departments of Dnipropetrovsk National University named after Oles Honchar. All participants were healthy. To determine the variability of a heart rate, we used a heart rate monitor POLAR RS800CX.

Statistical analysis of the results was performed with nonparametric methods.

The study examined the following parameters of spectral analysis: HF, (%) – power spectrum of high frequency components of variability in% of total power fluctuations; LF, (%) – power spectrum of low-frequency component of variability in% of total power fluctuations; VLF, (%) – very low power spectral component of variability in% of total power fluctuations; HF – average capacity of a high component of HRV in ms2; LF – average power low-frequency components of HRV ms2;  LF / HF – ratio of values ​​of low-and high-frequency component of HRV; Total – total power spectrum of HRV in ms2. Components of temporal analysis: SDNN – standard deviation of NN-intervals, reflecting all periodic components of variability during recording, that is a summary measure HRV; RMSSD – estimates comparing NN-intervals; pNN50 – This criterion is related to NN-intervals, which differ from each other by more than 50 ms, with a total of NN-intervals.

The results showed that students’ high-level power (HF) and low frequency (LF) components were below normal (standard use HRV indices developed by the European Society of Cardiology and the North American Society of pacing and electrophysiology), indicating the reduced functional activity of cardiac muscle and insufficient influence of the sympathetic and parasympathetic nervous system on a heart rate. VLF component responsible for a vascular tone and thermoregulatory system remained normal.

The indicators RMSSD and LF / HF were higher than normal, indicating the unbalanced influence of sympathetic and parasympathetic divisions on the heart, with a predominance of sympathetic regulation. These results indicate the low adaptive capacity of the organism to stressful environmental factors.

Monitoring of neurovegetative features of humanities students showed the presence of imbalance in vegetative control of an organism that can affect its functional state as a whole.

 This disorder of the neurovegetative state shows early signs of worsening adaptations of the body to stress, thereby leading to decreased performance. These data will provide methods and systems for improving health of students that is an important factor in the training of highly qualified specialists.