Association of size-fractionated indoor particulate matter and black carbon with heart rate variability in healthy elderly women in Beijing

W. Dong, L. Pan, H. Li, M. R. Miller, M. Loh, S. Wu, J. Xu, X. Yang, J. Shan, Y. Chen, F. Deng, X. Guo

Research output: Contribution to journalArticle

10 Scopus citations

Abstract

Associations between size-fractionated indoor particulate matter (PM) and black carbon (BC) and heart rate variability (HRV) and heart rate (HR) in elderly women remain unclear. Twenty-nine healthy elderly women were measured for 24-hour HRV/HR indices. Real-time size-fractionated indoor PM and BC were monitored on the same day and on the preceding day. Mixed-effects models were applied to investigate the associations between pollutants and HRV/HR indices. Increases in size-fractionated indoor PM were significantly associated with declines in power in the high-frequency band (HF), power in the low-frequency band (LF), and standard deviation of all NN intervals (SDNN). The largest decline in HF was 19% at 5-minute moving average for an interquartile range (IQR) increase (24 μg/m3) in PM0.5. The results showed that smaller particles could lead to greater reductions in HRV indices. The reported associations were modified by body mass index (BMI): Declines in HF at 5-minute average for an IQR increase in PM0.5 were 34.5% and 1.0% for overweight (BMI ≥25 kg/m2) and normal-weight (BMI <25 kg/m2) participants, respectively. Moreover, negative associations between BC and HRV indices were found to be significant in overweight participants. Increases in size-fractionated indoor PM and BC were associated with compromised cardiac autonomic function in healthy elderly women, especially overweight ones.

Original languageEnglish (US)
Pages (from-to)373-382
Number of pages10
JournalIndoor Air
Volume28
Issue number3
DOIs
StatePublished - May 2018

Keywords

  • black carbon
  • cardiac autonomic function
  • elderly women
  • heart rate variability
  • indoor exposure
  • size-fractionated particulate matter

ASJC Scopus subject areas

  • Environmental Engineering
  • Building and Construction
  • Public Health, Environmental and Occupational Health

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    Dong, W., Pan, L., Li, H., Miller, M. R., Loh, M., Wu, S., Xu, J., Yang, X., Shan, J., Chen, Y., Deng, F., & Guo, X. (2018). Association of size-fractionated indoor particulate matter and black carbon with heart rate variability in healthy elderly women in Beijing. Indoor Air, 28(3), 373-382. https://doi.org/10.1111/ina.12449