1. Airway luminal area and the resistive work of breathing during exercise in healthy young females and males

    Airway luminal area and the resistive work of breathing during exercise in healthy young females and males

    We examined the relationship between the work of breathing (W b ) during exercise and in vivo measures of airway size in healthy females and males. We hypothesized that sex-differences in airway luminal area (Ai) would explain the larger resistive W b during exercise in females. Healthy participants (n=11 females and n=11 males; 19-30 y) completed a cycle exercise test to exhaustion where W b was assessed using an esophageal balloon catheter. On a separate day, participants underwent a bronchoscopy procedure for optical coherence tomography measures of airways in the left (n=3) and right (n=4) lung. In ...

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