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Generation of a Chronic Obstructive Pulmonary Disease Model in Mice by Repeated Ozone Exposure
Published on: August 25, 2017
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Physical Activity, Air Pollution Exposure, and Lung Function Interactions Among Adults with COPD
Kelly Chen1, Mostafa Aglan1, Alexandra Purcell2
1Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, Beth Israel Deaconess Medical Center, Boston, Massachusetts, United States.
Chronic Obstructive Pulmonary Diseases (Miami, Fla.)
|March 28, 2023
Summary
Physical activity in COPD patients is linked to higher exposure to fine particulate matter and ozone. However, increased daily steps may reduce the negative impact of nitrogen dioxide on lung function.
Area of Science:
- Environmental Health
- Pulmonology
- Epidemiology
Background:
- Physical activity is recommended for COPD patients.
- The impact of physical activity on daily air pollution exposure and its effects on COPD airways is not well understood.
Purpose of the Study:
- To investigate if physical activity influences daily air pollution exposure in COPD patients.
- To determine if physical activity modifies the association between air pollution and airway function in COPD.
Main Methods:
- Thirty individuals with moderate-to-severe COPD tracked lung function (FEV1, FVC), personal pollutant exposure (PM2.5, NO2, O3), and daily step count over four months.
- Statistical models assessed the relationship between step count and pollution exposure, and the interaction between pollution and activity levels on lung function.
Main Results:
- Higher daily step count correlated with increased exposure to PM2.5 and O3.
- An interaction was observed between prior-day NO2 exposure and step count on FEV1 and FVC.
- The negative effects of NO2 on lung function were diminished at higher physical activity levels.
Conclusions:
- Increased physical activity in COPD patients is associated with modestly higher exposure to PM2.5 and O3.
- Physical activity may attenuate the adverse effects of NO2 on lung function in individuals with COPD.
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