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Article: Health effects of physical activity as predicted by particle deposition in the human respiratory tract

TitleHealth effects of physical activity as predicted by particle deposition in the human respiratory tract
Authors
KeywordsAir pollution
Physical activity
Health
Particulate matters
Particle deposition
Issue Date2019
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/scitotenv
Citation
Science of the Total Environment, 2019, v. 657, p. 819-826 How to Cite?
AbstractAlthough health benefits of physical activity are well known, the risk of physical activity in polluted air is unclear. Our objective is to investigate health effects resulting from physical activity in polluted air by looking at particle deposition in human tracheobronchial (TB) airways. Airflow and particle deposition in TB airways were investigated using a computational fluid dynamics (CFD) method. We chose three regional airways: upper (G3–G5), central (G9–G11) and lower (G14–G16). Physical activity was described by breathing rate at the mouth, for three levels of activity: sedentary (15 l/min), moderate (30 l/min) and intense (60 l/min). We found that particle deposition was strongly affected by physical activity. Particles are deposited in greater number in the lower airways (G14–G16) during sedentary activity, more in the upper airways (G3–G5) during intense activity, and uniformly in the airways during moderate activity. The difference in the deposition pattern was due to the reason that physical activity increased the airflow which increased inertial impaction. Our modeling of particle deposition in the human respiratory airways shows that there are different health effects for different activity levels: sedentary activity leads to chronic health effects, intense activity results in acute effects, and moderate activity minimizes the adverse health effects of physical activity in polluted air.
Persistent Identifierhttp://hdl.handle.net/10722/278209
ISSN
2019 Impact Factor: 6.551
2015 SCImago Journal Rankings: 1.702

 

DC FieldValueLanguage
dc.contributor.authorDeng, Q-
dc.contributor.authorOu, C-
dc.contributor.authorShen, YM-
dc.contributor.authorXiang, Y-
dc.contributor.authorMiao, Y-
dc.contributor.authorLi, Y-
dc.date.accessioned2019-10-04T08:09:35Z-
dc.date.available2019-10-04T08:09:35Z-
dc.date.issued2019-
dc.identifier.citationScience of the Total Environment, 2019, v. 657, p. 819-826-
dc.identifier.issn0048-9697-
dc.identifier.urihttp://hdl.handle.net/10722/278209-
dc.description.abstractAlthough health benefits of physical activity are well known, the risk of physical activity in polluted air is unclear. Our objective is to investigate health effects resulting from physical activity in polluted air by looking at particle deposition in human tracheobronchial (TB) airways. Airflow and particle deposition in TB airways were investigated using a computational fluid dynamics (CFD) method. We chose three regional airways: upper (G3–G5), central (G9–G11) and lower (G14–G16). Physical activity was described by breathing rate at the mouth, for three levels of activity: sedentary (15 l/min), moderate (30 l/min) and intense (60 l/min). We found that particle deposition was strongly affected by physical activity. Particles are deposited in greater number in the lower airways (G14–G16) during sedentary activity, more in the upper airways (G3–G5) during intense activity, and uniformly in the airways during moderate activity. The difference in the deposition pattern was due to the reason that physical activity increased the airflow which increased inertial impaction. Our modeling of particle deposition in the human respiratory airways shows that there are different health effects for different activity levels: sedentary activity leads to chronic health effects, intense activity results in acute effects, and moderate activity minimizes the adverse health effects of physical activity in polluted air.-
dc.languageeng-
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/scitotenv-
dc.relation.ispartofScience of the Total Environment-
dc.subjectAir pollution-
dc.subjectPhysical activity-
dc.subjectHealth-
dc.subjectParticulate matters-
dc.subjectParticle deposition-
dc.titleHealth effects of physical activity as predicted by particle deposition in the human respiratory tract-
dc.typeArticle-
dc.identifier.emailLi, Y: liyg@hku.hk-
dc.identifier.authorityLi, Y=rp00151-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.scitotenv.2018.12.067-
dc.identifier.pmid30677947-
dc.identifier.scopuseid_2-s2.0-85058240259-
dc.identifier.hkuros306613-
dc.identifier.volume657-
dc.identifier.spage819-
dc.identifier.epage826-
dc.publisher.placeNetherlands-

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