Accession Number : AD0787661

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

Descriptive Note : Final rept. Dec 70-Dec 71,

Corporate Author : SCHOOL OF AEROSPACE MEDICINE BROOKS AFB TEX

Personal Author(s) : Giannetta,Carl L. ; Jayanthinathan,Vishnampet S.

Report Date : SEP 1974

Pagination or Media Count : 11

Abstract : 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) 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)

Descriptors :   *Circadian rhythms, *Metabolism, *Stress(Physiology), *Flight crews, Endocrinology, Calcium, Magnesium, Phosphorus, Excretion, Urine

Subject Categories : Stress Physiology

Distribution Statement : APPROVED FOR PUBLIC RELEASE