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Influence of weather and atmospheric pollution on physical activity in patients with COPD
RATIONALE: Information concerning how climate and atmospheric pollutants affects physical activity in COPD patients is lacking and might be valuable in determining when physical activity should be encouraged. METHODS: Seventy-three stable COPD patients recorded on daily diary cards worsening of resp...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
BioMed Central
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4470337/ https://www.ncbi.nlm.nih.gov/pubmed/26071400 http://dx.doi.org/10.1186/s12931-015-0229-z |
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author | Alahmari, Ayedh D. Mackay, Alex J. Patel, Anant R.C. Kowlessar, Beverly S. Singh, Richa Brill, Simon E. Allinson, James P. Wedzicha, Jadwiga A. Donaldson, Gavin C. |
author_facet | Alahmari, Ayedh D. Mackay, Alex J. Patel, Anant R.C. Kowlessar, Beverly S. Singh, Richa Brill, Simon E. Allinson, James P. Wedzicha, Jadwiga A. Donaldson, Gavin C. |
author_sort | Alahmari, Ayedh D. |
collection | PubMed |
description | RATIONALE: Information concerning how climate and atmospheric pollutants affects physical activity in COPD patients is lacking and might be valuable in determining when physical activity should be encouraged. METHODS: Seventy-three stable COPD patients recorded on daily diary cards worsening of respiratory symptoms, peak expiratory flow rate, hours spent outside the home and the number of steps taken per day. Pedometry data was recorded on 16,478 days, an average of 267 days per patient (range 29-658). Daily data for atmospheric PM(10) and ozone (O(3)) were obtained for Bloomsbury Square, Central London from the Air Quality Information Archive databases. Daily weather data were obtained for London Heathrow from the British Atmospheric Data Archive. RESULTS: Colder weather below 22.5 °C, reduced daily step count by 43.3 steps day per°C (95 % CI 2.14 to 84.4; p = 0.039) and activity was lower on rainy than dry days (p = 0.002) and on overcast compared to sunny days (p < 0.001). Daily step count was 434 steps per day lower on Sunday than Saturday (p < 0.001) and 353 steps per day lower on Saturday than Friday (p < 0.001). After allowance for these effects, higher O(3) levels decreased activity during the whole week (-8 steps/ug/m3; p = 0.005) and at weekends (-7.8 steps/ug/m3; p = 0.032). Whilst, during the week PM(10) reduced activity (p = 0.018) but not during the weekend. CONCLUSIONS: Inactivity of COPD patients is greatest on cold, wet and overcast days and at the weekends. This study also provides evidence of an independent effect of atmospheric pollution at high levels. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1186/s12931-015-0229-z) contains supplementary material, which is available to authorized users. |
format | Online Article Text |
id | pubmed-4470337 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | BioMed Central |
record_format | MEDLINE/PubMed |
spelling | pubmed-44703372015-06-18 Influence of weather and atmospheric pollution on physical activity in patients with COPD Alahmari, Ayedh D. Mackay, Alex J. Patel, Anant R.C. Kowlessar, Beverly S. Singh, Richa Brill, Simon E. Allinson, James P. Wedzicha, Jadwiga A. Donaldson, Gavin C. Respir Res Research RATIONALE: Information concerning how climate and atmospheric pollutants affects physical activity in COPD patients is lacking and might be valuable in determining when physical activity should be encouraged. METHODS: Seventy-three stable COPD patients recorded on daily diary cards worsening of respiratory symptoms, peak expiratory flow rate, hours spent outside the home and the number of steps taken per day. Pedometry data was recorded on 16,478 days, an average of 267 days per patient (range 29-658). Daily data for atmospheric PM(10) and ozone (O(3)) were obtained for Bloomsbury Square, Central London from the Air Quality Information Archive databases. Daily weather data were obtained for London Heathrow from the British Atmospheric Data Archive. RESULTS: Colder weather below 22.5 °C, reduced daily step count by 43.3 steps day per°C (95 % CI 2.14 to 84.4; p = 0.039) and activity was lower on rainy than dry days (p = 0.002) and on overcast compared to sunny days (p < 0.001). Daily step count was 434 steps per day lower on Sunday than Saturday (p < 0.001) and 353 steps per day lower on Saturday than Friday (p < 0.001). After allowance for these effects, higher O(3) levels decreased activity during the whole week (-8 steps/ug/m3; p = 0.005) and at weekends (-7.8 steps/ug/m3; p = 0.032). Whilst, during the week PM(10) reduced activity (p = 0.018) but not during the weekend. CONCLUSIONS: Inactivity of COPD patients is greatest on cold, wet and overcast days and at the weekends. This study also provides evidence of an independent effect of atmospheric pollution at high levels. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1186/s12931-015-0229-z) contains supplementary material, which is available to authorized users. BioMed Central 2015-06-13 2015 /pmc/articles/PMC4470337/ /pubmed/26071400 http://dx.doi.org/10.1186/s12931-015-0229-z Text en © Alahmari et al. 2015 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated. |
spellingShingle | Research Alahmari, Ayedh D. Mackay, Alex J. Patel, Anant R.C. Kowlessar, Beverly S. Singh, Richa Brill, Simon E. Allinson, James P. Wedzicha, Jadwiga A. Donaldson, Gavin C. Influence of weather and atmospheric pollution on physical activity in patients with COPD |
title | Influence of weather and atmospheric pollution on physical activity in patients with COPD |
title_full | Influence of weather and atmospheric pollution on physical activity in patients with COPD |
title_fullStr | Influence of weather and atmospheric pollution on physical activity in patients with COPD |
title_full_unstemmed | Influence of weather and atmospheric pollution on physical activity in patients with COPD |
title_short | Influence of weather and atmospheric pollution on physical activity in patients with COPD |
title_sort | influence of weather and atmospheric pollution on physical activity in patients with copd |
topic | Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4470337/ https://www.ncbi.nlm.nih.gov/pubmed/26071400 http://dx.doi.org/10.1186/s12931-015-0229-z |
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