[Comparison of lung function parameters in healthy non-smokers following exertion in urban environmental air and in air-conditioned inside air].
This study examines the question whether young healthy nonsmokers show differences in parameters of lung function after having been exposed to exercise in city air and to the same exercise in air-conditioned room air. For this purpose 16 young nonsmokers of age 20-39 years (10 men: 26.6 +/- 5.2, 6 women: 22.2 +/- 1.4) exercised maximally once on a bicycle ergometer in city air for 8 minutes and 48 hours later in air-conditioned room air on the same ergometer also for 8 minutes. The forced vital capacity, the forced expiratory volume in 1 second (FEV1) and peak expiratory flow rates were determined before exercise, immediately after, and after the rest of 10, 30, 60, and 120 minutes. The following results were obtained: 1. In city air the continuously recorded concentrations of NO2 showed a mean value (+/- 1 SD) of 71.6 micrograms/m3 (+/- 23.2) and thus about 10 times higher than in air-conditioned room air, where the mean value of NO2 was 7.5 micrograms/m3 (+/- 3.5). 2. 10, 30, 60, and 120 minutes after exercise in city air the mean FEV1 values were about 2.5-3% lower than in room air. Even though these differences were small, they were significant (10 minutes after exercise p = 0.006, 30 minutes p = 0.011, 60 minutes p = 0.025, and 120 minutes p = 0.016). 3. The FEV1 differences were more pronounced in males. The males were, due to conditions beyond our control, exposed to higher NO2 and NO concentrations in city air than females.(ABSTRACT TRUNCATED AT 250 WORDS)
Kulstrunk
M
M
Medizinische Universitäts-Poliklinik, Departement für Innere Medizin, Kantonsspital Basel.
Bohni
B
B
D000328:Adult; D000389:Air Conditioning; D000397:Air Pollution; D015444:Exercise; D005260:Female; D005541:Forced Expiratory Volume; D006801:Humans; D008168:Lung / Q000502:physiology*; D008297:Male; D009569:Nitric Oxide; D009585:Nitrogen Dioxide; D012129:Respiratory Function Tests; D012737:Sex Factors
D009569:Nitric Oxide; D009585:Nitrogen Dioxide
Vergleich von Lungenfunktionsparametern bei gesunden Nichtrauchern nach Arbeitsleistung in städtischer Umgebungsluft und in klimatisierter Innenluft.