Evidence map›Paper›PMID 26071400›Full record

ArticleRespiratory research2015

Influence of weather and atmospheric pollution on physical activity in patients with COPD.

Ayedh D Alahmari, Alex J Mackay, Anant R C Patel, Beverly S Kowlessar, Richa Singh, Simon E Brill, James P Allinson, Jadwiga A Wedzicha, Gavin C Donaldson

Abstract read
In one paragraph

Article in Respiratory research, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 43 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
43citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

43 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  7. Review
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  12. Processing of Sedentary Time and Its Reference Equation in Patients with COPD.International journal of chronic obstructive pulmonary disease · 2024
    Article
  13. Article
  14. Review
  15. Article
  16. Effects of Air Pollution on the Health of Older Adults during Physical Activities: Mapping Review.International journal of environmental research and public health · 2023
    Review
  17. Article
  18. A cross-sectional survey on the effects of ambient temperature and humidity on health outcomes in individuals with chronic respiratory disease.Canadian journal of respiratory therapy : CJRT = Revue canadienne de la therapie respiratoire : RCTR · 2023
    Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors.

Ayedh D AlahmariCentre for Respiratory Medicine, University College London, Royal Free Campus, Rowland Hill Street, Hampstead, NW3 2PF, London, UK. ayedh.ahmari.10@ucl.ac.uk.
Alex J MackayCentre for Respiratory Medicine, University College London, Royal Free Campus, Rowland Hill Street, Hampstead, NW3 2PF, London, UK. Alexander.mackay@ucl.ac.uk.
Anant R C PatelCentre for Respiratory Medicine, University College London, Royal Free Campus, Rowland Hill Street, Hampstead, NW3 2PF, London, UK. anant.patel@ucl.ac.uk.
Beverly S KowlessarUK Airways Disease Section, National Heart and Lung Institute, Imperial College London, Emmanuel Kaye Building, London, UK. b.kowlessar@imperial.ac.uk.
Richa SinghUK Airways Disease Section, National Heart and Lung Institute, Imperial College London, Emmanuel Kaye Building, London, UK. richa.singh@imperial.ac.uk.
Simon E BrillUK Airways Disease Section, National Heart and Lung Institute, Imperial College London, Emmanuel Kaye Building, London, UK. s.brill@imperial.ac.uk.
James P AllinsonUK Airways Disease Section, National Heart and Lung Institute, Imperial College London, Emmanuel Kaye Building, London, UK. J.allinson@imperial.ac.uk.
Jadwiga A WedzichaUK Airways Disease Section, National Heart and Lung Institute, Imperial College London, Emmanuel Kaye Building, London, UK. j.wedzicha@imperial.ac.uk.
Gavin C DonaldsonUK Airways Disease Section, National Heart and Lung Institute, Imperial College London, Emmanuel Kaye Building, London, UK. Gavin.donaldson@imperial.ac.uk.

Funding

Medical Research Council G0800570/1Medical Research Council G0902006
6 · The paper itself

Abstract

rationaleInformation 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.

methodsSeventy-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 PM10 and ozone (O3) 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.

resultsColder 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 O3 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 PM10 reduced activity (p = 0.018) but not during the weekend.

conclusionsInactivity 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.

Indexed as

SeasonsWeatherAgedAged, 80 and overAir PollutionCohort StudiesFemaleHumansLongitudinal StudiesMaleMaximal Expiratory Flow RateMiddle AgedMotor ActivityParticulate MatterPulmonary Disease, Chronic ObstructiveSurveys and QuestionnairesParticulate Matter

Identifiers

PMID26071400
PMCPMC4470337

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.