Assessment of stress resistance of divers based on cardiorespiratory synchronism data

Aim. This study aims to assess the stress resistance of divers by the change in their regulatory and adaptive status under the influence of a specific stress factor. The paper also aims to analyze the degree of correspondence between the reproduced and specified breathing rhythms in the first test of cardiorespiratory synchronism. Materials and methods. The study involved 50 people, 9 experienced and 41 novice divers. Stress resistance was determined by the index of the regulatory adaptive status obtained before the impact of stress and the first immersion in the diving chamber with a pressure of up to 0.2 mPa. During the study, the parameters of cardiorespiratory synchronism and the index of the regulatory and adaptive status were established using the VNS-Micro device (Neurosoft) with software for the assessment of cardiorespiratory synchronism. Results. According to the dynamics of the main parameters of cardiorespiratory synchronism among novice divers, a high level of stress resistance was recorded in 19.5 % of divers, moderate stress resistance - in 39 %, and low stress resistance - in 41.5 %. The data obtained in experienced divers did not reveal any significant changes under stress. The degree of correspondence between the reproduced and specified breathing rhythms in the first test of cardiorespiratory synchronism averaged 31 %. Conclusion. The method of cardiorespiratory synchronism makes it possible to distinguish a group of people with high psychophysiological and functional reserves of the body and give recommendations on the possibility of working in extreme diving conditions. This will increase the safety and efficiency of the work in general.