If you're looking for a fast marathon to run, here's one factor you may not have considered: air quality. A new study from the American College of Sports Medicine indicates that poor air quality may hinder women's marathon times. The study, led by researcher Linsey Marr, Ph.D., evaluated marathon race results, weather data and air pollutant concentrations in seven marathons over a period of 8 to 28 years. Researchers compared the top three male and female finishing times with the course record and contrasted them with air pollutant levels. (They also took unfavorable race conditions, such as hot weather, into consideration.) Higher levels of particles in the air were associated with decreased performance for women, but did not have a significant effect on men's race times.
The study looked at major U.S. marathons in cities such as New York, Boston and Los Angeles, where pollution tends to be highest. Although people who aren't running might not be significantly impacted by low-yet-still-acceptable air quality, marathoners are atypical because of their breathing patterns.
"Previous research has shown that during a race, marathon runners inhale and exhale about the same volume of air as a sedentary person would over the course of two full days," Marr said. "Therefore, runners are exposed to much greater amounts of pollutants than under typical breathing conditions."
Sounds to me like a good excuse to run a scenic marathon with lots of fresh air, like Big Sur!
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Source: "Air Pollution May Affect Women's Marathon Performance" American College of Sports Medicine, March 1, 2010
Bad Marathon Time? Blame It on the Air originally appeared on About.com Running & Jogging on Tuesday, March 2nd, 2010 at 14:41:57.
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