Dr. Greenwald’s research team is examining the possible health effects of these exposures.
One important factor they have to
consider is that people of different height inhale different volumes of
air. The amount of exertion is even more important.
A tall person running on the field might
inhale 3 times as much air as a smaller person sitting on the sidelines,
meaning more pollution exposure. In effect, they are exposed to
different “doses” of pollution. In some of his previous work, Dr. Greenwald has developed methods to account for that.
In the current project, he found
volunteers to wear heart rate monitors and pedometers who were also
willing to exhale into devices that measure tiny particles or exhaled
gasses in their breath known as biomarkers. The breath tests are done
before and after the workout to provide data for comparison.
The study looks at these biomarkers –
biological markers – to examine how athletes’ bodies react to the
stresses of exercise and pollution exposure.
These methods allow researchers to go
beyond simply measuring how much pollution is in the air and actually
examine how much is inhaled. Dr. Greenwald and his research partners
will be analyzing the data this fall and hope to glean insights into the
health impacts of exposure to a range of air pollutants common in
Atlanta.
They plan to publish their findings in 2017.