Author’s response to reviews Title: The impact of high-flow nasal cannula oxygen therapy on exercise capacity in fibrotic interstitial lung disease: a proof-of-concept randomized controlled crossover trial Authors:

We greatly appreciate being given the opportunity to revise our manuscript (Manuscript number: PULM-D-19-00193, Title: The impact of high-flow nasal cannula oxygen therapy on exercise capacity in fibrotic interstitial lung disease: a proof-of-concept randomized controlled crossover trial). Below, you will find point-by-point responses to each comment. We believe the manuscript is now much improved, and we hope you find our changes acceptable.