Influence of traffic-related air pollutants on lung function.

We investigated the influence of traffic-related air pollutants on respiratory function, with a focus on the non-smoking residents of the capital city of Warsaw in Poland, who lived close to busy streets. The results demonstrate that people living in some parts of the city show symptoms of bronchial obstruction over four times more often than those from the control group consisting of the inhabitants of a remote region in eastern Poland, with considerably less air pollution. Using multiple regression models it was shown that, apart from the place of living, the floor the apartment is situated on, the length of residence, allergy, and physical activity are the factors that significantly influence the forced expiratory volume in 1 s (FEV1) and the pseudo-Tiffenau index (FEV1/FVC).