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Outdoor Workout Can Push Heart Past Limit, Study Says

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The Tampa Tribune

Published: September 13, 2007

People with heart disease are advised to think twice before hitting the streets for a jog. Researchers recommend that heart disease patients take their workout indoors or steer clear of heavy traffic to avoid breathing polluted air.

The first study in which heart patients were directly exposed to pollution found that exercising in areas with high levels of diesel exhaust and microscopic soot particles is especially risky for people with heart disease.
European researchers found that brief exposure to diluted diesel exhaust during exercise reduced a key anti-clotting substance in the blood and worsened insufficient flow of blood and oxygen to the heart - changes that can trigger a heart attack.

Nation/World, Page 5

•Heart and respiratory patients should exercise regularly because it is so beneficial to overall health, doctors stress.

•Numerous studies have shown a link between short-term and long-term exposure to air pollution and higher rates of hospitalizations and deaths because of poor blood supply to the heart, abnormal heart rhythms, gradual heart failure and stroke.

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