Influence of psychoemotional stress on postural stability on the parameters of the statokinesiogram spectrum and heart rate variability
The informational significance of the indices of computer stabilography for the evaluation of the functional capabilities of the pilot's body under mental stress and psycho-emotional stress was determined experimentally. Correlation of the parameters of the spectrum of the stabilogram with the data of the heart rate variability, which characterize the activity of the autonomic nervous system after the mental load, is revealed. Changes in the parameters of the spectrum of the stabilogram were in the low-frequency zone both in the sagittal and frontal planes in the group with a deterioration in the quality of the equilibrium function. In the group with deterioration of postural stability after mental load, there is a marked increase in the functioning level of the sympathetic part of the autonomic nervous system, which is confirmed by the increase in heart rate variability. In the group of subjects with improvement of the postural function, the influence of the sympathetic part of the autonomic nervous system on the total power of the spectrum of heart rate variability was reduced. The data obtained are applicable for assessing the tolerability of mental loads in the survey of flight personnel and other persons whose professional activity is related to the impact on the body of extreme factors and adverse changes in its functional state.