EFFECTS OF HIGH CONCENTRATIONS OF CARBON DIOXIDE AND DIET ON URINARY EXCRETION OF STEROIDS AND CATECHOLAMINES
AEROSPACE MEDICAL DIV BROOKS AFB TX
Pagination or Media Count:
Air Force pilots were exposed to inspired tracheal 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 duration 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 epinephrine, 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, norepinephrine, 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.
- Food, Food Service and Nutrition