Influence of individual psychological features on the functional state of aviation specialists in conditions of hypobaric hypoxia

Abstract

The study is devoted to the study of the influence of individual psychological characteristics of the personality of aviation specialists on the tolerability of moderate degrees of hypobaric hypoxia, simulated in a pressure chamber. The study included the assessment of physiological parameters (blood pressure, heart rate, arterial blood saturation, Roufier index) and psychophysiological indicators (critical frequency of light flickering fusion, complex sensorimotor response, indicators of subjective assessment of the state (SAN test)) depending on the level of neuroticism, extroversion and personal anxiety level.
 As a result of the study, it was found that the functional state of the body of subjects with high levels of neuroticism in hypobaric hypoxia changes significantly than in subjects with low levels of neuroticism, which is confirmed by a more pronounced decrease in health, activity and mood by 17.5% (p 0.01), 16.9% (p 0.05) and 9% (p 0.01), respectively, an increase in the time of complex sensorimotor response by 12.6% (p 0.01), as well as more pronounced functional changes in the cardiovascular system.
 It was revealed that changes in some physiological parameters in extroverts had a large negative dynamics in hypoxia, so the increase in the Roufier index in the group of introverts at 30, 60 minutes and after the rise by 97.3%, 98.6% and 15.1%, respectively, against an increase of 118.2%, 123.6% and 16.4% in the group of extroverts was revealed. In the group of extroverts, an increase in the time of complex sensorimotor response after the end of the study was found by 8.0% (p 0.05), an increase in critical frequency of light flickering fusion compared to the indicators obtained before the rise by 5.2% (p 0.05).
 It is established that the functional status of subjects with high levels of trait anxiety had a more pronounced negative trend in terms of the effects of hypobaric hypoxia, which is confirmed by a significant higher values of the Roufier index in groups with high levels of trait anxiety, with the background study, 30th, 60th minute and after rising; extending the time complex sensorimotor response to 45 minute 6.1% (p 0.05), and after altitude study by 9.5% (p 0.01); by the 40th minute of stay in the hyperbaric chamber the indicators of well-being decreased by 20.3% (p 0.01), activity by 18.8% (p 0.05) and mood by 13.7% (p 0.01).
 Thus, it was shown that in assessing the tolerability of moderate degrees of hypoxia, it is necessary to take into account the dependence of changes in the functional state of the organism on individual psychological characteristics.