Background: The 6-min walk test (6MWT) is commonly used to assess exercise capacity in patients with fibrotic idiopathic interstitial pneumonia (f-IIP). However, it is not known whether patients with f-IIP have reduced levels of physical activity in daily life (DLPA) or whether pulmonary function tests and the 6MWT correlate with their DLPA.
Methods: The aim of this study was to measure DLPA in patients with f-IIP and to determine the relationships between DLPA and the 6MWT, pulmonary functional parameters, and anxiety and depression scores.