Circadian Variations in Renal Excretion of Magnesium, Calcium, and Phosphorus during a 3-Day Flight.
Final rept. Dec 70-Dec 71,
SCHOOL OF AEROSPACE MEDICINE BROOKS AFB TEX
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The effect of a 3-day flight on the excretion of calcium, magnesium, and inorganic phosphorus in the urine of C-5 crewmembers was studied. The excretion rate of the minerals was analyzed for evidence of circadian rhythm. Magnesium showed a significant P .05 daytime interaction during the flight and day-to-day variation P .05 during the recovery. Phosphorus had a significant time-of-day variation P .05. The day-to-time and day-to-day variations for calcium were of borderline significance. Author
- Stress Physiology