Abstract
University “Ovidius” of Constanța, Faculty of Medicine, in collaboration with the Diving Center, has conducted several research studies regarding the evolution of the vital functions of divers in the hyperbaric environment. Their breathing is constantly adapting to withstand the physiological changes. Reducing the residual volume of the lungs is an essential parameter for improving respiratory function in the event of increased physical effort. The residual volume cannot be determined by spirometry. The medical researchers and engineers developed an original test plan and verified the residual volume of the subjects, by experimental determinations on groups of divers, during simulated diving, with air, at 18 m, in the Hyperbaric Complex of the Diving Center. The study is useful in the prevention of occupational diseases specific to divers and in knowing their limits of adaptation to the hyperbaric environment.