Effects of O2 and/or CO2 Inhalation on Rest and Exercise Pulmonary Hemodynamic

Effects of O2 and/or CO2 Inhalation on Rest and Exercise Pulmonary Hemodynamic

The aim of this study is to describe the pulmonary hemodynamic evolution at rest and during a short constant load exercise in 4 conditions :

• normoxia
• hypoxia
• hypercapnia
• association hypoxia and hypercapnia

Inclusion criteria:

• healthy male
• exercise capacity between 100 and 130 % of theorical values

Exclusion criteria:

• smoker
• headache
• impossibility to perform an exercise test
• no tricuspid regurgitation on the echocardiography