Black carbon reduces the beneficial effect of physical activity on lung function

Michelle Laeremans, Evi Dons, Ione Avila-Palencia, Glòria Carrasco-Turigas, Juan Pablo Orjuela-Mendoza, Esther Anaya-Boig, Tom Cole-Hunter, Audrey DE Nazelle, Mark Nieuwenhuijsen, Arnout Standaert, Martine VAN Poppel, Patrick DE Boever, Luc Int Panis

Research output: Contribution to journalArticlepeer-review

67 Citations (Scopus)

Abstract

INTRODUCTION: When physical activity is promoted in urban outdoor settings (e.g., walking and cycling), individuals are also exposed to air pollution. It has been reported that short-term lung function increases as a response to physical activity, but this beneficial effect is hampered when elevated air pollution concentrations are observed. Our study assessed the long-term impact of air pollution on the pulmonary health benefit of physical activity.

METHODS: Wearable sensors were used to monitor physical activity levels (SenseWear) and exposure to black carbon (microAeth) of 115 healthy adults during 1 wk in three European cities (Antwerp, Barcelona, London). The experiment was repeated in three different seasons to approximate long-term behavior. Spirometry tests were performed at the beginning and end of each measurement week. All results were averaged on a participant level as a proxy for long-term lung function. Mixed effect regression models were used to analyze the long-term impact of physical activity, black carbon and their interaction on lung function parameters, forced expiratory volume in the first second (FEV1), forced vital capacity (FVC), FEV1/FVC, forced expiratory flow (FEF)25-75, and peak expiratory flow. Interaction plots were used to interpret the significant interaction effects.

RESULTS: Negative interaction effects of physical activity and black carbon exposure on FEV1 (P = 0.07), FEV1/FVC (P = 0.03), and FEF25-75 (P = 0.03) were observed. For black carbon concentrations up to approximately 1 μg·m, an additional MET·h·wk resulted in a trend toward lung function increases (FEV1, FEV1/FVC, and FEF25-75 increased 5.6 mL, 0.1% and 14.5 mL·s, respectively).

CONCLUSIONS: We found that lung function improved with physical activity at low black carbon levels. This beneficial effect decreased in higher air pollution concentrations. Our results suggest a greater need to reduce air pollution exposures during physical activity.

Original languageEnglish
Pages (from-to)1875-1881
Number of pages7
JournalMedicine and Science in Sports and Exercise
Volume50
Issue number9
DOIs
Publication statusPublished - 01 Sept 2018
Externally publishedYes

Keywords

  • Adult
  • Air Pollution/adverse effects
  • Carbon/adverse effects
  • Cities
  • Environmental Exposure/adverse effects
  • Europe
  • Exercise
  • Female
  • Forced Expiratory Volume
  • Humans
  • Male
  • Middle Aged
  • Particulate Matter/adverse effects
  • Seasons
  • Spirometry
  • Vital Capacity

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