| Autor: |
Jordan JP, Sykes HA, Crownover JC, Schatte CL, Simmons JB 2nd, Jordan DP |
| Jazyk: |
angličtina |
| Zdroj: |
Aviation, space, and environmental medicine [Aviat Space Environ Med] 1980 Feb; Vol. 51 (2), pp. 132-6. |
| Abstrakt: |
As a prelude to a flight experiment, an attempt was made to separate energy requirements associated with gravity from all other metabolic needs. The biological effects of weightlessness were simulated by suspending animals in a harness so that antigravity muscles were not supporting the body. Twelve pairs of rats were allowed to adapt to wearing a harness for 5 d. Experimental animals were then suspended in harness for 7 d followed by recovery for 7 d. Control animals were harnessed but never suspended. VO2, VCO2 and rate of 14CO2 expiration from radio-labeled glucose were monitored on selected days. Food intake and body mass were recorded daily. Metabolic rate decreased in experimental animals during 7 d of suspension and returned to normal during recovery. Although some of the metabolic changes may have related to variation in food intake, simulated weightlessness appears to directly affect bioenergetic balance. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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