[Rational atmosphere in manned sealed cabins and the prospects of its use]

Physiological validation of an artificial atmosphere in manned cabins of flying vehicles remains to be one of the major biomedical problems. It has been experimentally demonstrated that oxygen and carbon dioxide are closely related in vital processes, acting as antagonists or synergists. Changing their content in an enclosure, it is possible to influence the function of the human body and to correct its deconditioning due to prolonged hypokinesia. Active mountain adaptation accompanied by a marked mobilization of physiological systems seems to train and activate functional reserves of the body, making them more adequate to tolerate extreme effects.