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Article: Benefits of physical activity not affected by air pollution: a prospective cohort study

TitleBenefits of physical activity not affected by air pollution: a prospective cohort study
Authors
Keywordsair pollution
physical activity
cohort study
older
Issue Date2020
PublisherOxford University Press. The Journal's web site is located at http://ije.oxfordjournals.org/
Citation
International Journal of Epidemiology, 2020, v. 49 n. 1, p. 142-152 How to Cite?
AbstractBackground: Physical activity (PA) is beneficial to human health, whereas long-term exposure to air pollution is harmful. However, their combined effects remain unclear. We aimed to estimate the combined (interactive) mortality effects of PA and long-term exposure to fine particulate matter (PM2.5) among older adults in Hong Kong. Methods: Participants aged ≥65 years from the Elderly Health Service Cohort (n = 66 820) reported their habitual PA at baseline (1998–2001) and were followed up till 31 December 2011. We used a satellite-based spatiotemporal model to estimate PM2.5 concentration at the residential address for each participant. We used Cox proportional hazards regression to assess the interaction between habitual PA and long-term exposure to PM2.5 on cardiovascular and respiratory mortality. We tested for additive interaction by estimating relative excess risk due to interaction and multiplicative interaction employing P-value for the interaction term. Results: The death risks were inversely associated with a higher volume of PA and were positively associated with long-term exposure to PM2.5. The benefits of PA were more pronounced for participation in traditional Chinese exercise (e.g. Tai Chi) and aerobic exercise (e.g. cycling). We found little evidence of interaction between PA (volume and type) and long-term exposure to PM2.5 on either additive or multiplicative scales. Conclusions: In this cohort of older Chinese adults, PA may decrease the risk of mortality, be it in areas of relatively good or bad air quality. The beneficial mortality effects of habitual PA outweighed the detrimental effects of long-term exposure to air pollution in Hong Kong.
Persistent Identifierhttp://hdl.handle.net/10722/283694
ISSN
2019 Impact Factor: 7.707
2015 SCImago Journal Rankings: 4.381

 

DC FieldValueLanguage
dc.contributor.authorSUN, S-
dc.contributor.authorCAO, W-
dc.contributor.authorQiu, H-
dc.contributor.authorRAN, J-
dc.contributor.authorLin, H-
dc.contributor.authorShen, C-
dc.contributor.authorLee, RSY-
dc.contributor.authorTian, L-
dc.date.accessioned2020-07-03T08:22:48Z-
dc.date.available2020-07-03T08:22:48Z-
dc.date.issued2020-
dc.identifier.citationInternational Journal of Epidemiology, 2020, v. 49 n. 1, p. 142-152-
dc.identifier.issn0300-5771-
dc.identifier.urihttp://hdl.handle.net/10722/283694-
dc.description.abstractBackground: Physical activity (PA) is beneficial to human health, whereas long-term exposure to air pollution is harmful. However, their combined effects remain unclear. We aimed to estimate the combined (interactive) mortality effects of PA and long-term exposure to fine particulate matter (PM2.5) among older adults in Hong Kong. Methods: Participants aged ≥65 years from the Elderly Health Service Cohort (n = 66 820) reported their habitual PA at baseline (1998–2001) and were followed up till 31 December 2011. We used a satellite-based spatiotemporal model to estimate PM2.5 concentration at the residential address for each participant. We used Cox proportional hazards regression to assess the interaction between habitual PA and long-term exposure to PM2.5 on cardiovascular and respiratory mortality. We tested for additive interaction by estimating relative excess risk due to interaction and multiplicative interaction employing P-value for the interaction term. Results: The death risks were inversely associated with a higher volume of PA and were positively associated with long-term exposure to PM2.5. The benefits of PA were more pronounced for participation in traditional Chinese exercise (e.g. Tai Chi) and aerobic exercise (e.g. cycling). We found little evidence of interaction between PA (volume and type) and long-term exposure to PM2.5 on either additive or multiplicative scales. Conclusions: In this cohort of older Chinese adults, PA may decrease the risk of mortality, be it in areas of relatively good or bad air quality. The beneficial mortality effects of habitual PA outweighed the detrimental effects of long-term exposure to air pollution in Hong Kong.-
dc.languageeng-
dc.publisherOxford University Press. The Journal's web site is located at http://ije.oxfordjournals.org/-
dc.relation.ispartofInternational Journal of Epidemiology-
dc.rightsPre-print: Journal Title] ©: [year] [owner as specified on the article] Published by Oxford University Press [on behalf of xxxxxx]. All rights reserved. Pre-print (Once an article is published, preprint notice should be amended to): This is an electronic version of an article published in [include the complete citation information for the final version of the Article as published in the print edition of the Journal.] Post-print: This is a pre-copy-editing, author-produced PDF of an article accepted for publication in [insert journal title] following peer review. The definitive publisher-authenticated version [insert complete citation information here] is available online at: xxxxxxx [insert URL that the author will receive upon publication here].-
dc.subjectair pollution-
dc.subjectphysical activity-
dc.subjectcohort study-
dc.subjectolder-
dc.titleBenefits of physical activity not affected by air pollution: a prospective cohort study-
dc.typeArticle-
dc.identifier.emailTian, L: linweit@hku.hk-
dc.identifier.authorityTian, L=rp01991-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1093/ije/dyz184-
dc.identifier.pmid31504557-
dc.identifier.scopuseid_2-s2.0-85077932148-
dc.identifier.hkuros310776-
dc.identifier.volume49-
dc.identifier.issue1-
dc.identifier.spage142-
dc.identifier.epage152-
dc.publisher.placeUnited Kingdom-

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