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Erschienen in: International Archives of Occupational and Environmental Health 1/2012

01.01.2012 | Original Article

Effects of fine particulate on heart rate variability in Beijing: a panel study of healthy elderly subjects

verfasst von: Xiaofeng Jia, Xiaoming Song, Masayuki Shima, Kenji Tamura, Furong Deng, Xinbiao Guo

Erschienen in: International Archives of Occupational and Environmental Health | Ausgabe 1/2012

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Abstract

Purpose

This study aims to investigate the effects of ambient fine particulate (particulate matter with an aerodynamic diameter of 2.5 μm or less, PM2.5) exposure within several minutes on Heart Rate Variability (HRV) of the healthy elderly subjects in the general environments (indoor and outdoor).

Methods

This study is conducted by measuring the real-time indoor and outdoor exposure variables (PM2.5, Temperature, and relative humidity) and heart rate variability (HRV), a marker of cardiac autonomic function measured by 24-h ambulatory electrocardiogram monitoring in a panel of 30 healthy elderly subjects in Beijing. Associations between personal 5-min PM2.5 concentrations and concurrent 5-min HRV frequency indices are investigated using the mixed linear model.

Results

High Frequency (HF) and Low Frequency (LF) increase, respectively by 1.30% (95% CI, 0.16–2.45%) and 1.34% (95% CI, 0.38–2.30%) per 10 μg/m3 increases of PM2.5 in the polled data analysis after the potential confounders are adjusted. When the indoor and outdoor periods are separated, positive associations are found between PM2.5 and HRV when the subjects are indoors; however, there is no association when the subjects are outdoors.

Conclusions

We conclude that PM2.5 exposure within several minutes leads to increases of HRV of the healthy older subjects, which may increase the cardiac risks. Prominent effect of PM2.5 on HRV is found when they are indoors, while the effect is not obvious in outdoor environment.
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Metadaten
Titel
Effects of fine particulate on heart rate variability in Beijing: a panel study of healthy elderly subjects
verfasst von
Xiaofeng Jia
Xiaoming Song
Masayuki Shima
Kenji Tamura
Furong Deng
Xinbiao Guo
Publikationsdatum
01.01.2012
Verlag
Springer-Verlag
Erschienen in
International Archives of Occupational and Environmental Health / Ausgabe 1/2012
Print ISSN: 0340-0131
Elektronische ISSN: 1432-1246
DOI
https://doi.org/10.1007/s00420-011-0646-3

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