[Altitude stress and the training of cosmonauts]

An ergonomic concept of the development of altitude stress is presented. According to this concept, the altitude stress as a psychophysiological response of man to the risk of falling from altitude is determined by the number and placement with respect to man position of antifalling contact supports and those being non-contact, i.e., potential supports capable of preventing the fall when changed a situation with the structures. The analysis indicated that this concept is also applicable for describing the extravehicular locomotion of cosmonauts with the use of the supports on the basis of which the preliminary ground preparation of cosmonauts using altitude-spatial trainer becomes possible.