PRINCIPLE APPROACHES TO SELECTION OF THE SHORT-ARM CENTRIFUGE REGIMENS FOR EXTENDED SPACE-FLIGHT

Eight +Gz regimens on the SAC varying in their values (within 0.8 to 1 .6 G), exposures, schedules, etc. were analyzed. Some regimens were co mbined with water-salt supplements (WSS) or veloergometer training (VE ). Weightlessness was simulated by 3- to 28-day water immersion. +3 Gz loads on the centrifuge with the radius of 7.5 m were applied prior t o and post immersion. Regimens for human runs on the SAC as a novel, p erspective countermeasure for interplanetary expeditions should be sel ected with due regard of the human tolerance, their efficiency, and su bsequent verification and specification in orbital flights.These appro aches showed that 3 days of exposure to 1.2 G combined with WSS and 6 days of exposure to G-loads from 0.8 to 1.6 G together with VE were mo st optimal.