Ventilation Distribution in COPD Patients During Breathing Exercises

The subject will be asked to slowly exhale with the glottis opened in the right lateral posture. The physiotherapist will accompany the subject by gently applying manual pressure on the chest wall and the abdomen during expiratory phases.

The subject will be asked to slowly exhale with the glottis opened in the right lateral posture. The physiotherapist will not intervene in this arm.

The subject will be asked to exhale through a positive expiratory pressure (PEP) device (Threshold PEP) while being in the right lateral posture.

The subject will be asked to breath with a fixed tidal-breathing of 1 liter per breath (monitored via a spirometer) while being in the right lateral posture.

The subject will be asked to breath spontaneously while being in the right lateral posture.