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Effects of the Use of Air Purifier on Indoor Environment and Respiratory System among Healthy Adults

Author

Listed:
  • Yoshiko Yoda

    (Department of Public Health, Hyogo College of Medicine, Nishinomiya 663-8501, Japan)

  • Kenji Tamura

    (Center for Health and Environmental Risk Research, National Institute for Environmental Studies, Tsukuba 305-8506, Japan)

  • Sho Adachi

    (Hyogo Regional Center of Japan Environment and Children’s Study, Hyogo College of Medicine, Nishinomiya 663-8501, Japan)

  • Naruhito Otani

    (Department of Public Health, Hyogo College of Medicine, Nishinomiya 663-8501, Japan)

  • Shoji F. Nakayama

    (Center for Health and Environmental Risk Research, National Institute for Environmental Studies, Tsukuba 305-8506, Japan)

  • Masayuki Shima

    (Department of Public Health, Hyogo College of Medicine, Nishinomiya 663-8501, Japan
    Hyogo Regional Center of Japan Environment and Children’s Study, Hyogo College of Medicine, Nishinomiya 663-8501, Japan)

Abstract

Air purifiers have become popular among ordinary families. However, it remains controversial whether indoor air purification improves the respiratory health of healthy adults. A randomized crossover intervention study was conducted with 32 healthy individuals. The subjects were categorized into two groups. One group continuously used true air purifiers, and the other followed with sham air purifiers for 4 weeks. Following this first intervention, all the subjects underwent a 4-week washout period and continued with the second 4-week intervention with the alternate air purifiers. We collected fine particulate matter (PM) ≤ 2.5 µm in aerodynamic diameter (PM2.5), coarse particulate matter between 2.5 and 10 µm in aerodynamic diameter (PM10–2.5) and ozone (O 3 ). The subjects’ pulmonary function and fractional exhaled nitric oxide (FeNO) were measured during the study period. The indoor PM2.5 concentrations decreased by 11% with the true air purifiers compared to those with sham air purifiers. However, this decrease was not significant ( p = 0.08). The air purification did not significantly improve the pulmonary function of the study subjects. In contrast, an increase in the indoor PM10–2.5 and O 3 concentration led to a significant decrease in the forced expiratory volume in one second (FEV 1.0 )/forced vital capacity (FVC) and maximal mid-expiratory flow (MMEF), respectively. In conclusion, air purification slightly improved the indoor PM2.5 concentrations in ordinary homes but had no demonstrable impact on improving health.

Suggested Citation

  • Yoshiko Yoda & Kenji Tamura & Sho Adachi & Naruhito Otani & Shoji F. Nakayama & Masayuki Shima, 2020. "Effects of the Use of Air Purifier on Indoor Environment and Respiratory System among Healthy Adults," IJERPH, MDPI, vol. 17(10), pages 1-11, May.
    • Handle: RePEc:gam:jijerp:v:17:y:2020:i:10:p:3687-:d:362200
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    References listed on IDEAS

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    1. Itai Kloog & Brent A Coull & Antonella Zanobetti & Petros Koutrakis & Joel D Schwartz, 2012. "Acute and Chronic Effects of Particles on Hospital Admissions in New-England," PLOS ONE, Public Library of Science, vol. 7(4), pages 1-8, April.
    2. Dorina Gabriela Karottki & Michal Spilak & Marie Frederiksen & Zorana Jovanovic Andersen & Anne Mette Madsen & Matthias Ketzel & Andreas Massling & Lars Gunnarsen & Peter Møller & Steffen Loft, 2015. "Indoor and Outdoor Exposure to Ultrafine, Fine and Microbiologically Derived Particulate Matter Related to Cardiovascular and Respiratory Effects in a Panel of Elderly Urban Citizens," IJERPH, MDPI, vol. 12(2), pages 1-20, February.
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    Cited by:

    1. Lei Li & Yilin Zheng & Shaojun Ma, 2022. "Indoor Air Purification and Residents’ Self-Rated Health: Evidence from the China Health and Nutrition Survey," IJERPH, MDPI, vol. 19(10), pages 1-17, May.

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