Exercise presents a considerable stress to the pulmonary system and ventilation-perfusion
(V̇a/Q̇) heterogeneity increases with exercise, affecting the efficiency of gas exchange. In …

Heavy exercise increases ventilation-perfusion mismatch and decreases pulmonary gas
exchange efficiency. Previous work using magnetic resonance imaging (MRI) arterial spin …

Ventilation-perfusion (VA/Q) inequality has been shown to increase with exercise. Potential
mechanisms for this increase include nonuniform pulmonary vasoconstriction, ventilatory …

During maximal exercise, ventilation-perfusion inequality increases, especially in athletes.
The mechanism remains speculative. We hypothesized that, if interstitial pulmonary edema …

The purpose of this study was to examine the effects of exercise on extravascular lung water
as it may relate to pulmonary gas exchange. Ten male humans underwent measures of …

We assessed the heterogeneity of regional pulmonary blood flow (PBFr), using radioactive
microspheres in five unanesthetized dogs standing at rest (Rest), standing at a 45 degrees …

Key points Pulmonary transit of agitated contrast (PTAC) occurs during exercise in healthy
individuals. It has been suggested that positive PTAC reflects a greater pulmonary vascular …

The postexercise alteration in pulmonary gas exchange in high-aerobically trained subjects
depends on both the intensity and the duration of exercise (G. Manier, J. Moinard, and H …

To investigate the effects of both exercise and acute exposure to high altitude on ventilation-
perfusion (VA/Q) relationships in the lungs, nine young men were studied at rest and at up to …

During exercise (especially in hypoxia), the alveolar-arterial O2 tension difference
increases. This impairment of pulmonary gas exchange is caused partly by diffusion …