Accession Number : AD0633170

Title :   QUANTITATIVE EFFECTS OF ABRUPT DECELERATION ON PULMONARY DIFFUSION IN MAN.

Descriptive Note : Rept. for 1 Sep 65-1 Feb 66,

Corporate Author : AEROMEDICAL RESEARCH LAB (6571ST) HOLLOMAN AFB N MEX

Personal Author(s) : Whitehouse,Alan C. ; Brown,William K. ; Foster,Peter ; Scherer,Harris F.

Report Date : MAY 1966

Pagination or Media Count : 21

Abstract : Pulmonary diffusion capacity was measured in nine subjects using the steady state method to determine if this physiological measurement was altered by impact. Each subject rode the Daisy Decelerator twice backward (+G sub x) at 25 G, twice laterally (-G sub y) at 15 G, and experienced one sham ride. Carbon monoxide diffusion capacities were measured immediately before and after each ride, and 3 and 24 hours afterward. No significant change in pulmonary diffusion capacity was associated with impact. There was no correlation between observed and predicted CO diffusion capacity based on oxygen consumption, however, observed CO diffusion capacity and oxygen consumption were highly correlated. The validity of the prediction formula as described by Donevan et al. is questioned, but this may be related to the increased altitude (4400 ft) at which the studies were done. (Author)

Descriptors :   (*LUNG, DIFFUSION), (*DECELERATION, LUNG), HUMANS, STRESS(PHYSIOLOGY), CARBON MONOXIDE, OXYGEN CONSUMPTION

Subject Categories : Stress Physiology

Distribution Statement : APPROVED FOR PUBLIC RELEASE