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Related Experiment Video

Updated: May 25, 2026

Imaging Features of Systemic Sclerosis-Associated Interstitial Lung Disease

Imaging Features of Systemic Sclerosis-Associated Interstitial Lung Disease

Published on: June 16, 2020

Interstitial lung abnormalities and reduced exercise capacity.

Tracy J Doyle¹, George R Washko, Isis E Fernandez

¹Pulmonary and Critical Care Division, Brigham and Women's Hospital, Boston, MA 02115, USA.

American Journal of Respiratory and Critical Care Medicine

|January 24, 2012

Summary

Interstitial lung abnormalities (ILA) are linked to reduced exercise capacity, specifically a shorter 6-minute walk distance (6MWD). This finding highlights potential impacts on daily function for individuals with ILA.

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Assessment of Pulmonary Capillary Blood Volume, Membrane Diffusing Capacity, and Intrapulmonary Arteriovenous Anastomoses During Exercise

Assessment of Pulmonary Capillary Blood Volume, Membrane Diffusing Capacity, and Intrapulmonary Arteriovenous Anastomoses During Exercise

Published on: February 20, 2017

Area of Science:

Pulmonary Medicine
Exercise Physiology
Radiology

Background:

The impact of interstitial lung abnormalities (ILA) on exercise capacity remains incompletely understood.
The 6-minute walk test (6MWD) is a common measure of functional exercise capacity.

Purpose of the Study:

To evaluate the validity of the 6-minute walk test (6MWD) in individuals with interstitial lung abnormalities (ILA).
To investigate the association between ILA and 6MWD in a large cohort of smokers.

Main Methods:

Utilized Spearman correlation coefficients to analyze relationships between 6MWD and clinical/physiological measures.
Employed linear and logistic regression models to assess the association between ILA and 6MWD in 2,416 smokers from the COPDGene study.

Main Results:

Interstitial lung abnormalities (ILA) were associated with a significantly reduced 6-minute walk distance (6MWD).
Individuals with ILA demonstrated an increased likelihood of limited walk distances (≤500m and ≤250m).
Findings were observed across different ILA subtypes and were not exclusive to COPD patients.

Conclusions:

Interstitial lung abnormalities (ILA) are demonstrably linked to decreased exercise capacity, as measured by 6MWD.
The 6MWD is a valid indicator of functional limitations in individuals with ILA.