[Effects of centrifugation-related artificial gravity on the human organism. Positive and negative effects].
Data of investigations of the artificial gravity issues in centrifuge experiments in Russian, USA and Japan over the past 40 years were analyzed. Periodic +Gz centrifugation was used to prevent or eliminate body deconditioning after 3- to 56-d simulated microgravity, and to increase the body functional reserve (orthostatic stability) in ordinary life. Positive effects included prevention of a decline of gravitational stability and reduction or averting the negative effects of simulated microgravity on various physiological systems. Better results can be achieved by combining artificial g-loads with the well-proven methods of combating deconditioning, i.e. physical training on bicycle ergometer and induced hydration. Human tolerance of g-loads on a short-arm centrifuge with a high (100%) gravitational gradient was found no worse than on a mid-arm centrifuge with a lower (20%) gravitational gradient. Negative effects of +Gz on a short-arm centrifuge were revealed and counteracting measures were determined.
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Vil'-Vil'iams
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Kotovskaia
D002498:Centrifugation / Q000295:instrumentation*; D005080:Exercise Test; D018470:Gravity, Altered / Q000009:adverse effects*; D006400:Hematocrit; D006801:Humans; D018476:Hypokinesia; D010809:Physical Fitness; D011311:Pressoreceptors / Q000502:physiology