Prognostic significance of incorporating SpO2 recovery time to the 6-minute walk test protocol and to a modified GAP index risk prediction model in patients with idiopathic pulmonary fibrosis.

Incorporating SpO2 recovery time to the 6MWT protocol and to a modified GAP index may improve mortality risk prognostication in IPF, supporting the utilization of continuous SpO₂ monitoring and recovery analysis during routine 6MWT.