Accession Number:

AD0606034

Title:

EFFECTS OF WHOLE-BODY VIBRATIONS ON PLASMA AND URINARY CORTICOSTEROID LEVELS IN MAN.

Descriptive Note:

Rept. for Dec 60-Feb 63,

Corporate Author:

CHICAGO UNIV ILL MEDICAL SCHOOL

Report Date:

1964-06-01

Pagination or Media Count:

1.0

Abstract:

The effects on the hypophysio-adrenal and hypophysiothyroid systems of whole-body vibration of the human for three 3-minute exposures separated by l-12 minute rest periods at 1-20 cps were assessed through the determination of plasma 17-hydroxycorticosteroids 17-OH-CS and protein-bound iodine PBI and of urinary adrenal cortex steroids. The levels of vibration were estimated three-minute tolerance values for the various frequencies. Blood and urine samples were collected at corresponding times on the control day and on the experiment day. Plasma 17-OH-CS levels were lower than control values P 0.05 immediately after vibration at 5, 6, and 7 cps and at 5 hours after vibration P 0.01. There was a significant decrease in the urine excretion of the blue tetrazolium reducing steroids at 1, 2, and 3 cps, and in 17-ketogenic steroids at 18, 19, and 20 cps. At 5, 6, and 7 cps there were significant changes in all steroids studies. Serum protein-bound iodine showed no significant differences when compared to control day. Alterations in blood and urine levels of steroids, while of statistical significance, are still considered within normal limits. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE