Improved Air Quality and Attenuated Lung Function Decline: Modification by Obesity in the SAPALDIA Cohort
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Author
Schikowski, Tamara
Schaffner, Emmanuel
Meier, Flurina
Phuleria, Harish C.
Vierkötter, Andrea
Schindler, Christian
Kriemler, Susi
Zemp, Elisabeth
Krämer, Ursula
Bridevaux, Pierre-Olivier
Rochat, Thierry
Künzli, Nino
Probst-Hensch, Nicole
Note: Order does not necessarily reflect citation order of authors.
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https://doi.org/10.1289/ehp.1206145Metadata
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Schikowski, T., E. Schaffner, F. Meier, H. C. Phuleria, A. Vierkötter, C. Schindler, S. Kriemler, et al. 2013. “Improved Air Quality and Attenuated Lung Function Decline: Modification by Obesity in the SAPALDIA Cohort.” Environmental Health Perspectives 121 (9): 1034-1039. doi:10.1289/ehp.1206145. http://dx.doi.org/10.1289/ehp.1206145.Abstract
Background: Air pollution and obesity are hypothesized to contribute to accelerated decline in lung function with age through their inflammatory properties. Objective: We investigated whether the previously reported association between improved air quality and lung health in the population-based SAPALDIA cohort is modified by obesity. Methods: We used adjusted mixed-model analyses to estimate the association of average body mass index (BMI) and changes in particulate matter with aerodynamic diameter ≤ 10 µm (PM10; ΔPM10) with lung function decline over a 10-year follow-up period. Results: Lung function data and complete information were available for 4,664 participants. Age-related declines in lung function among participants with high average BMI were more rapid for FVC (forced vital capacity), but slower for FEV1/FVC (forced expiratory volume in 1 sec/FVC) and FEF25–75 (forced expiratory flow at 25–75%) than declines among those with low or normal average BMI. Improved air quality was associated with attenuated reductions in FEV1/FVC, FEF25–75, and FEF25–75/FVC over time among low- and normal-BMI participants, but not overweight or obese participants. The attenuation was most pronounced for ΔFEF25–75/FVC (30% and 22% attenuation in association with a 10-μg/m3 decrease in PM10 among low- and normal-weight participants, respectively.) Conclusion: Our results point to the importance of considering health effects of air pollution exposure and obesity in parallel. Further research must address the mechanisms underlying the observed interaction. Citation: Schikowski T, Schaffner E, Meier F, Phuleria HC, Vierkötter A, Schindler C, Kriemler S, Zemp E, Krämer U, Bridevaux P-O, Rochat T, Schwartz J, Künzli N, Probst-Hensch N. 2013. Improved air quality and attenuated lung function decline: modification by obesity in the SAPALDIA cohort. Environ Health Perspect 121:1034–1039; http://dx.doi.org/10.1289/ehp.1206145Other Sources
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3764076/pdf/Terms of Use
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