Relation of concavity in the expiratory flow-volume loop to dynamic hyperinflation during exercise in COPD
Active expiration during exercise can increase intrathoracic pressure yielding concavity in
the expiratory flow-volume loop in COPD. We investigated the relationship between this …
the expiratory flow-volume loop in COPD. We investigated the relationship between this …
[HTML][HTML] Breath-by-breath quantification of progressive airflow limitation during exercise in COPD: a new method
During heavy exercise in chronic obstructive pulmonary disease (COPD), dynamic airways
compression leads to a progressive fall in intrabreath flow. This is manifested by concavity in …
compression leads to a progressive fall in intrabreath flow. This is manifested by concavity in …
The major limitation to exercise performance in COPD is dynamic hyperinflation
DE O'Donnell, KA Webb - Journal of applied physiology, 2008 - journals.physiology.org
The inability to engage in sustained physical activity is a common feature of chronic
obstructive pulmonary disease (COPD) and contributes importantly to the perception of poor …
obstructive pulmonary disease (COPD) and contributes importantly to the perception of poor …
Repeatability of inspiratory capacity during incremental exercise in patients with severe COPD
TE Dolmage, RS Goldstein - Chest, 2002 - Elsevier
Study objective Estimating lung volume using inspiratory capacity (IC) maneuvers is a useful
way of tracking dynamic hyperinflation. An understanding of the repeatability of the IC in a …
way of tracking dynamic hyperinflation. An understanding of the repeatability of the IC in a …
Does expiratory muscle activity influence dynamic hyperinflation and exertional dyspnea in COPD?
P Laveneziana, KA Webb, K Wadell, JA Neder… - Respiratory physiology …, 2014 - Elsevier
Increased expiratory muscle activity is common during exercise in patients with COPD but its
role in modulating operating lung volumes and dyspnea during incremental cycle ergometry …
role in modulating operating lung volumes and dyspnea during incremental cycle ergometry …
Partitioning of the elastic work of inspiration in patients with COPD during exercise
P Sliwinski, D Kaminski, J Zielinski… - European Respiratory …, 1998 - Eur Respiratory Soc
During exercise, dynamic hyperinflation-induced intrinsic positive end-expiratory pressure
(PEEPi) and decreased dynamic lung compliance (CL, dyn) of patients with chronic …
(PEEPi) and decreased dynamic lung compliance (CL, dyn) of patients with chronic …
Regional chest wall volumes during exercise in chronic obstructive pulmonary disease
A Aliverti, N Stevenson, RL Dellaca, AL Mauro… - Thorax, 2004 - thorax.bmj.com
Background: Dynamic hyperinflation of the lungs impairs exercise performance in chronic
obstructive pulmonary disease (COPD). However, it is unclear which patients are affected by …
obstructive pulmonary disease (COPD). However, it is unclear which patients are affected by …
Determinants of dynamic hyperinflation during metronome-paced tachypnea in COPD and normal subjects
CB Cooper, GL Calligaro, MM Quinn… - Respiratory Physiology …, 2014 - Elsevier
In COPD, dynamic hyperinflation (DH) occurs during exercise and during metronome-paced
tachypnea (MPT). We investigated the relationship of DH with breathing pattern and …
tachypnea (MPT). We investigated the relationship of DH with breathing pattern and …
Breathing pattern and gas exchange at peak exercise in COPD patients with and without tidal flow limitation at rest
O Diaz, C Villafranca, H Ghezzo… - European …, 2001 - Eur Respiratory Soc
Expiratory flow limitation (FL) at rest is frequently present in chronic obstructive pulmonary
disease (COPD) patients. It promotes dynamic hyperinflation with a consequent decrease in …
disease (COPD) patients. It promotes dynamic hyperinflation with a consequent decrease in …
Airway obstruction, dynamic hyperinflation, and breathing pattern during incremental exercise in COPD patients
Ventilatory capacity is reduced in chronic obstructive pulmonary disease (COPD) patients.
Tidal volume (VT) is lower and breathing frequency higher at a given ventilation (VE) …
Tidal volume (VT) is lower and breathing frequency higher at a given ventilation (VE) …
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