FIELD: medicine.;SUBSTANCE: 4-6 months after the 4g-loaded orbiter mission and descent, on the first post-mission day an astronaut is dressed in a space suit at a nominal excessive pressure and total weight of the astronaut and space suit of 0.38 of this weight on the Earth. Thereafter, the astronaut carries out some work on the Mars surface which involves recording an astronaut heart rate (HR); once reaching individually acceptable thresholds, the physical actions are interrupted for the heart rate recovery to individually recommended medical parameters. Total pause duration is subtracted from total working hours. A difference is defined as net working hours. If the net working hours is equal to or exceed a minimum time required for the minimum time it takes for performing Mars surface operations, a performance level is considered to be satisfactory.;EFFECT: method enables ground prediction of astronaut's professional performance after the space travel and Mars landing by simulating the Mars orbital environment.;1 tbl
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