Accession Number : AD0695788

Title :   SEASONAL ADRENOCORTICAL TRENDS FOR MILITARY TRAINEES IN A SUBTROPICAL CLIMATE.

Descriptive Note : Final rept. Jun 63-Jun 65,

Corporate Author : SCHOOL OF AEROSPACE MEDICINE BROOKS AFB TEX

Personal Author(s) : Shannon,Ira L. ; Hale,Henry B.

Report Date : AUG 1969

Pagination or Media Count : 16

Abstract : Air Force recruits who were undergoing basic training at Lackland Air Force Base, Tex., were studied for evidence of climate-related adrenocortical change. The study was run over a 52-week period, with a different group of 10 or 11 trainees under study each week. Serum 17-OHCS determinations were made at 0730, 1130, and 1530 hours, with the subjects fasting, inactive, and at thermoneutrality. Urinary 17-OHCS measurements were carried out on 4-hour urine specimens collected at 1130 and 1530 hours. The seasonal variation found for serum 17-OHCS was statistically significant, but that found for urinary 17-OHCS was not. The patterns of variation over the seasons for serum 17-OHCS were not the same at different times of day (P < .005). The serum 17-OHCS data obtained at 0730 hours most distinctly indicated (a) equality for the winter and autumn groups, (b) mild adrenocortical hyperactivity for the spring group, and (c) mild adrenocortical hypoactivity for the summer group. (Author)

Descriptors :   (*CORTICOSTEROID AGENTS, *ACCLIMATIZATION), PERIODIC VARIATIONS, PHYSIOLOGY, BLOOD CHEMISTRY, URINE, MILITARY PERSONNEL

Subject Categories : Anatomy and Physiology

Distribution Statement : APPROVED FOR PUBLIC RELEASE