| EFFECTS OF HIGH CONCENTRATIONS OF CARBON DIOXIDE AND DIET ON URINARY EXCRETION OF STEROIDS AND CATECHOLAMINES, (2006) | |||||||||
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| Air Force pilots were exposed to inspired tra cheal PCO2 of 21 mm. Hg (BTPS) at 700 mm. Hg and 200 mm. Hg cabin pressure. Each exposure was of 4 days' duration and was preceded in each case by a control period of low CO2 also of 4 days' dura tion at the equivalent cabin pressures. During the entire experiment, including pre- and post experiment control periods, the subjects were given a special liquid diet. The effects of CO2 and diet on the endocrine functions were studied by determining the urinary excretion of epineph rine, norepinephrine, 17-OHCS, and corticoster one-like hormones. It was found that the CO2, both at ground and at simulated altitude, in creased the excretion of epinephrine, norepineph rine, and corticosterone-like hormones. CO2 at simulated altitude had a stronger effect than at ground level. The special liquid diet caused increased excretion of epinephrine, while the excretion of the other three hormone groups decreased. (Author) | |||||||||
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