Purpose Oxygen consumption (. VO 2) is independent of oxygen delivery (O 2) above a
critical level of O 2. O 2 may become dependent on O 2 when oxygen demand exceeds …

Supplemental oxygen improves exercise tolerance of normoxemic and hypoxemic chronic
obstructive pulmonary disease (COPD) patients. We determined whether nonhypoxemic …

Background Physical exercise training is an evidence-based treatment in chronic obstructive
pulmonary disease, and patients' peak work rate is associated with reduced chronic …

Oxygen May Improve Dyspnea and Endurance in Patients with Chronic Obstructive Pulmonary
Disease and only Mild Hypoxemia Page 1 Oxygen May Improve Dyspnea and Endurance in …

Oxygen is one of the oldest drugs in respiratory and cardiovascular medicine. Among its
benefits are a reduction of ventilatory demand and improvements in metabolism, muscle …

BACKGROUND: Supplemental oxygen therapy has been shown to improve exercise
performance in patients with chronic obstructive pulmonary disease (COPD). It is unknown …

We evaluated the effect of supplemental O2 on energy metabolism of hypoxemic humans by
measuring O2 uptake (VO2) kinetics and other cardiorespiratory parameters in nine male …

Oxygen therapy improves submaximal exercise tolerance in hypoxemic patients with chronic
obstructive pulmonary disease (COPD). This study compared the standard nasal cannula …

Background: Evidence for improved exercise tolerance or relief of breathlessness by short
term use of oxygen before or after exercise in patients with chronic obstructive pulmonary …

It is unclear whether short-term benefits from supplemental oxygen translate into improved
quality of life in patients with severe COPD. In a 12 wk double-blind randomized crossover …