Lung deposited dose of UFP and PM for cyclists and car passengers in Belgium
Commuter cyclists experience short episodes of high exposure to traffic born air pollution that have potential adverse health effects. We have compared respiratory parameters and exposure to Ultrafine Particles, PM2.5 and PM10 for persons who cycled and drove identical trajectories in three Belgian locations in a pair-wise design. Differences in lung deposited doses are large and consistent across locations. Physical activity significantly increases exposure of cyclists to traffic exhaust. Additional analyses of physiological parameters reveal changes in exhaled NO, serum BDNF and % blood neutrophile cells, but we hypothesize that these effects do not offset the overall health benefits of cycling.
KeywordsAtmospheric Environment Street Canyon Ultrafine Particle Serum BDNF Motorize Traffic
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