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Updated: Jul 4, 2026

Home-Based Prescribed Pulmonary Exercise in Patients with Stable Chronic Obstructive Pulmonary Disease

Home-Based Prescribed Pulmonary Exercise in Patients with Stable Chronic Obstructive Pulmonary Disease

Published on: August 24, 2019

The longitudinal decrease in exercise tolerance and disease progression in mild-to-moderate COPD.

Qi Wan¹, Zhishan Deng¹, Fan Wu¹

¹State Key Laboratory of Respiratory Disease & National Clinical Research Center for Respiratory Diseases & National Center for Respiratory Medicine & Guangzhou Institute of Respiratory Health & The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.

Respiratory Medicine

|July 2, 2026

Summary

Declining exercise tolerance in COPD patients over 3 years correlates with faster lung function decline and increased air trapping. This suggests reduced exercise capacity may signal disease progression in mild-to-moderate COPD.

Keywords:

Cardiopulmonary exercise testing Chest radiographic structure Exercise tolerance Longitudinal analysis Lung function decline

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Dual Test Gas Pulmonary Diffusing Capacity Measurement During Exercise in Humans Using the Single-Breath Method

Dual Test Gas Pulmonary Diffusing Capacity Measurement During Exercise in Humans Using the Single-Breath Method

Published on: February 2, 2024

Area of Science:

Pulmonary Medicine
Respiratory Research
Chronic Obstructive Pulmonary Disease (COPD)

Background:

Exercise intolerance is a known prognostic marker for poor respiratory outcomes in COPD.
Longitudinal changes in exercise tolerance and their link to disease progression are not well understood.

Purpose of the Study:

To investigate the association between longitudinal changes in exercise tolerance and disease progression in patients with mild-to-moderate COPD.

Main Methods:

A prospective, community-based cohort study in China (2019-2024) involving 213 mild-to-moderate COPD patients.
Participants underwent baseline and annual assessments over 3 years, including spirometry, CT scans, and cardiopulmonary exercise testing (CPET).
Patients were grouped based on changes in peak oxygen uptake (exercise tolerance) over the 3-year period.

Main Results:

A 5% decrease in exercise tolerance was linked to accelerated air trapping (0.18%/year) and a faster decline in FEV1 (-4.2 mL/year).
Patients with declining exercise tolerance showed significantly greater progression in emphysema (0.40%/year) and air trapping (1.26%/year) compared to those without decline.
Over 61% of participants (131/213) experienced a decline in exercise tolerance during the study.

Conclusions:

A longitudinal decrease in exercise tolerance over 3 years is associated with accelerated lung function decline and air trapping progression.
Reduced exercise tolerance may serve as an important marker for disease progression in mild-to-moderate COPD.
These findings highlight the clinical significance of monitoring exercise capacity in COPD management.