Risk/benefit tradeoff of habitual physical activity and air pollution on chronic pulmonary obstructive disease: findings from a large prospective cohort study

BMC Medicine

Zilong Zhang¹  Fei Tian¹  Hualiang Lin¹  Lan Chen¹  Yinglin Wu¹  Miao Cai¹  Xiaojie Wang¹  Haitao Li² 

[1] Department of Epidemiology, School of Public Health, Sun Yat-sen University, 510080, Guangzhou, China;Department of Social Medicine and Health Service Management, Shenzhen University General Hospital, 518055, Shenzhen, China;

关键词: Air pollution;    Physical activity;    Chronic obstructive pulmonary disease;    Cohort study;   

DOI  :  10.1186/s12916-022-02274-8

来源: Springer

【 摘 要 】

BackgroundThe combined health impact of physical activity (PA) and air pollution on chronic obstructive pulmonary disease (COPD) remains unclear. We investigated the joint effects of habitual PA and long-term fine particulate matter (PM2.5) exposure on COPD incidence in a prospective population-based cohort.MethodsA prospective cohort study was conducted using data from the UK Biobank. Incidence of COPD was ascertained through linkage to the UK National Health Services register. Annual mean PM2.5 concentration was obtained using land use regression model. PA was measured by questionnaire and wrist-worn accelerometer. Cox proportional hazard models were applied to examine the associations between PM2.5, PA, and COPD. Additive and multiplicative interactions were examined.ResultsA total of 266,280 participants free of COPD at baseline were included in data analysis with an average follow-up of 10.64 years, contributing to around 2.8 million person-years. Compared with participants with low level of PA, those with higher PA levels had lower risks of COPD incidence [hazard ratio (HR): 0.769, 95% CI: 0.720, 0.820 for moderate level; HR: 0.726, 95% CI: 0.679, 0.776 for high level]. By contrast, PM2.5 was associated with increased risk of COPD (HR per interquartile range increment: 1.065, 95% CI: 1.032, 1.099). Limited evidence of interaction between habitual PA and PM2.5 exposure was found. Similar results were found for accelerometer-measured PA.ConclusionsOur study suggests that habitual PA could reduce risk of COPD incidence, and such protective effects were not affected by ambient PM2.5 pollution exposure.

【 授权许可】

CC BY