Circadian Variations in Renal Excretion of Magnesium,Calcium,and Phosphorus during a 3-Day Flight.

摘要

The effect of a 3-day flight on the excretion of calcium,magnesium,and inorganic phosphorus in the urine of C-5crewmembers was studied. The excretion rate of the minerals was analyzed for evidence of circadian rhythm. Magnesium showed a significant (P <.05) day/time 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)