Lung elastic recoil during breathing at increased lung volume

Journal of Applied Physiology
J R RodarteR Pellegrino


During dynamic hyperinflation with induced bronchoconstriction, there is a reduction in lung elastic recoil at constant lung volume (R. Pellegrino, O. Wilson, G. Jenouri, and J. R. Rodarte. J. Appl. Physiol. 81: 964-975, 1996). In the present study, lung elastic recoil at control end inspiration was measured in normal subjects in a volume displacement plethysmograph before and after voluntary increases in mean lung volume, which were achieved by one tidal volume increase in functional residual capacity (FRC) with constant tidal volume and by doubling tidal volume with constant FRC. Lung elastic recoil at control end inspiration was significantly decreased by approximately 10% within four breaths of increasing FRC. When tidal volume was doubled, the decrease in computed lung recoil at control end inspiration was not significant. Because voluntary increases of lung volume should not produce airway closure, we conclude that stress relaxation was responsible for the decrease in lung recoil.


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Sep 18, 2002·Journal of Applied Physiology·Emanuele CrimiV Brusasco
Oct 20, 2001·Journal of Applied Physiology·R PellegrinoV Brusasco
Oct 13, 2000·American Journal of Respiratory and Critical Care Medicine·C CassinoJ Reibman
Nov 15, 2011·Physics in Medicine and Biology·Tianyu ZhaoDaniel A Low
Sep 9, 2006·Journal of Applied Physiology·Maurizio MeineroV Brusasco
Apr 10, 2008·European Journal of Applied Physiology·Kay TetzlaffStephan Sorichter
Apr 1, 2021·European Journal of Applied Physiology·Antonis EliaMatthew J Lees

Related Concepts

Functional Residual Capacity
Lung Compliance
Lung Volume Measurements
Pulmonary Physiological Phenomena
Tidal Volume

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