Accession Number:

ADA001930

Title:

Mechanics of Breathing at Reduced Barometric Pressures of Flight.

Descriptive Note:

Final rept.,

Corporate Author:

FLORIDA UNIV GAINESVILLE DEPT OF PHYSIOLOGY

Personal Author(s):

Report Date:

1974-10-30

Pagination or Media Count:

62.0

Abstract:

The studies accomplished may be divided into five main categories studies of the mechanics of forced expiration and coughing at ground level with ambient air as the inspired gas similar studies at simulated altitudes of 18,000 and 27,000 feet, similar studies at ground level with gas mixtures of different densities as the inspired gas studies of the effect of gas density on a mechanical model to simulate clearance of mucous from the respiratory tract and analog computer modelling of various breathing maneuvers. In addition to purely physical factors, these studies have involved several physiological factors including compliance and resistance of the lung and airways, the pressure-volume relationship of the chest, the force-velocity and relationship of the respiratory muscles, and the contraction and relaxation time of these muscles. This report presents pertinent data and conclusions.

Subject Categories:

  • Stress Physiology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE