Peculiarity of autonomic functions regulation remodeling in human adaptation to extreme conditions in labor activities

Abstract

In modern society, professional activity in conditions of extreme factors occupies a growing place. Of particular note is the work related to night shifts involving up to 20% of the population. In some cases, this work may lead to a breach of the adaptation processes of the body and increase the risk of diseases. The necessity to search criteria of dysregulation changes in the human body during adaptation to extreme conditions in labor activities is the actual problem from the standpoint of preventive health care of the working population health and providing safety in professional activities conditions. In our work, we attempted to identify early signs of autonomic function`s dysregulation by analyzing the heart rhythm variability in locomotive operators and doctors on duty. It was revealed that these groups of people with different levels of intensity of professional activities may be the model for observation of the stages of dysregulation process. It is also shown that the earliest markers of autonomic regulation remodeling are indicators of the spectral analysis of heart rhythm variability, reflecting the activity of the total power regulation (TP) and parasympathetic part (HF).