Study participants were exposed to a wider range of PM2.5 pollution levels than participants in previous air pollution studies. Average PM2.5 levels during the Olympics were less than half the average exposure levels experienced by the drivers before and after the Games – but still were higher than those experienced by other study populations. The results showed that increases in PM2.5 pollution levels were associated with decreases in HRV in young and healthy taxi drivers. Decreased HRV is a risk factor for adverse cardiac effects such as heart attacks.
“A major strength of this study is that we evaluated the same workers during three different time periods that had markedly different PM2.5 air pollution levels, which allowed us to compare the corresponding levels of 5-minute HRV indices among different time periods,” wrote first author Shaowei Wu and colleagues. “A comparison of raw five-minute HRV indices indicated that the low PM2.5 exposure period (during the Olympic Games) was associated with relatively high HRV, while higher PM2.5 exposures (before and after the Olympic Games) were associated with relatively low HRV.”
Other authors of the paper included Furong Deng, Jie Niu, Qinsheng Huang, Youcheng Liu and Xinbiao Guo. The study was supported by grants from the National Key Technologies R&D Program of China and the National Natural Science Foundation of China.
The article is available free of charge at http://www.ehponline.org/docs/2009/0900818/abstract.html.
EHP is published by the National Institute of Environmental Health Sciences (NIEHS), part of the U.S. Department of Health and Human Services. EHP is an Open Access journal. More information is available online at http://www.ehponline.org/.
Brogan & Partners Convergence Marketing handles marketing and public relations for the publication and is responsible for creation and distribution of this press release.
Jen Betz | Newswise Science News
Safeguarding sustainability through forest certification mapping
27.06.2017 | International Institute for Applied Systems Analysis (IIASA)
Dune ecosystem modelling
26.06.2017 | Albert-Ludwigs-Universität Freiburg im Breisgau
Strong light-matter coupling in these semiconducting tubes may hold the key to electrically pumped lasers
Light-matter quasi-particles can be generated electrically in semiconducting carbon nanotubes. Material scientists and physicists from Heidelberg University...
Fraunhofer IPA has developed a proximity sensor made from silicone and carbon nanotubes (CNT) which detects objects and determines their position. The materials and printing process used mean that the sensor is extremely flexible, economical and can be used for large surfaces. Industry and research partners can use and further develop this innovation straight away.
At first glance, the proximity sensor appears to be nothing special: a thin, elastic layer of silicone onto which black square surfaces are printed, but these...
3-D shape acquisition using water displacement as the shape sensor for the reconstruction of complex objects
A global team of computer scientists and engineers have developed an innovative technique that more completely reconstructs challenging 3D objects. An ancient...
Physicists have developed a new technique that uses electrical voltages to control the electron spin on a chip. The newly-developed method provides protection from spin decay, meaning that the contained information can be maintained and transmitted over comparatively large distances, as has been demonstrated by a team from the University of Basel’s Department of Physics and the Swiss Nanoscience Institute. The results have been published in Physical Review X.
For several years, researchers have been trying to use the spin of an electron to store and transmit information. The spin of each electron is always coupled...
What is the mass of a proton? Scientists from Germany and Japan successfully did an important step towards the most exact knowledge of this fundamental constant. By means of precision measurements on a single proton, they could improve the precision by a factor of three and also correct the existing value.
To determine the mass of a single proton still more accurate – a group of physicists led by Klaus Blaum and Sven Sturm of the Max Planck Institute for Nuclear...
26.07.2017 | Event News
21.07.2017 | Event News
19.07.2017 | Event News
26.07.2017 | Physics and Astronomy
26.07.2017 | Life Sciences
26.07.2017 | Earth Sciences