Related Experiment Video
Updated: Aug 11, 2026

Home-Based Prescribed Pulmonary Exercise in Patients with Stable Chronic Obstructive Pulmonary Disease
Published on: August 24, 2019
Influence of posture on pulmonary gas exchange and heart rate in chronic obstructive lung disease
Abstract:
Sixteen subjects with chronic obstructive lung disease were studied in supine and sitting position. VT, VE, VD and VD/VT were definitely higher in the sitting position (p less than 0.001). PaCO2 was slightly lower in the sitting position, whereas Pa¿O2 was the same in both positions. P(A-a)O2 was essentially the same in both positions, but the estimated QS/QT was definitely lower in the sitting position. In patients with low FEV1.0 the heart rate showed a tendency towards higher values in the sitting position.
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