[Tolerance of +G2 gravitation overload in persons aged 41-58 years].

Forty-five men (non-pilots) aged 41-58 were used in 186 experimental runs to study their tolerance to +GZ acceleration. The test subjects were either healthy people or showed atherosclerotic symptoms (the number of which varied from 1-2 to 5 and more). During centrifugation the test subjects had no anti-G suits on. Healthy test subjects exhibited high tolerance to +Gz acceleration of up to 5 g in most centrifugal runs (90.3%). The test subjects with early atherosclerotic changes showed a significantly lower tolerance as compared to the matched controls. It was found that in the atherosclerotic subjects tolerance to +Gz acceleration decreased as its value increased and as the number of atherosclerotic symptoms grew. The major symptoms that limited tolerance to +Gz acceleration in all the test subjects were cardiac arrhythmias and in the atherosclerotic subjects they were also eye disorders and autonomic-vascular reactions during recovery. The data obtained show that it is important to measure individual tolerance to acceleration in people aged 41-58 years old.