The contribution of FEV1 and airflow limitation on the intensity of dyspnea and leg effort during exercise. Insights from a real‐world cohort

RATIONALE: The effort required to cycle and breathe intensify as power increases during incremental exercise. It is currently unclear how changes in FEV₁ in the presence or absence of airflow limitation) impacts the intensity of dyspnea and leg effort. This is clinically important as the improvement in FEV₁ is often the target for improving dyspnea. OBJECTIVES: To investigate the relationship between dyspnea (D), leg effort, power (P), and FEV₁ …