New possibilities for human lungs ventilation function control in special physiology tasks using tracheal noises of forced expiration

Some types of human professional activities are associated with the influence of adverse environmental factors, therefore, the study of the human body response both in acute situations and in case of prolonged exposure to such factors is necessary to identify early signs of functional distress and prevent the disease development. The purpose of the paper is to assess the ability to control changes in the human lungs ventilation function under extreme physical loads and a bronchodilation test using the developed acoustic parameters of forced expiratory tracheal noise. Materials and Methods. The authors examined three groups of volunteers: professional divers (n=25) before and after scuba diving, testers (n=11) while modeling the physiological effects of prolonged -gravity condition, and healthy persons (n=29) during bronchodilation test. Results. The authors revealed significant individual dynamics of tracheal noise duration of forced expiration after diving in modern respiratory equipment of closed type in 28 % (7/25) of divers...