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Simple fitness test could predict long-term risk for heart attack, stroke in middle-aged people
Date:5/18/2011

DALLAS May 18, 2011 How fast can you run a mile?

If you're middle-aged, the answer could provide a strong predictor of your risk of heart attack or stroke over the next decade or more.

In two separate studies, UT Southwestern Medical Center researchers have found that how fast a middle-age person can run a mile can help predict the risk of dying of heart attack or stroke decades later for men and could be an early indicator of cardiovascular disease for women.

In one recent study in the Journal of the American College of Cardiology, researchers analyzed the heart disease risk of 45-, 55- and 65-year-old men based on their fitness level and traditional risk factors, such as age, systolic blood pressure, diabetes, total cholesterol and smoking habits. The scientists found that low levels of midlife fitness are associated with marked differences in the lifetime risk for cardiovascular disease.

For example, a 55-year-old man who needs 15 minutes to run a mile has a 30 percent lifetime risk of developing heart disease. In contrast, a 55-year-old who can run a mile in eight minutes has a lifetime risk of less than 10 percent.

"Heart disease tends to cluster at older ages, but if you want to prevent it, our research suggests that the prescription for prevention needs to occur earlier when a person is in his 40s and 50s," said Dr. Jarett Berry, assistant professor of internal medicine and a corresponding author on both studies.

Researchers in this study found that a higher fitness level lowered the lifetime risk of heart disease even in people with other risk factors.

In a separate study in Circulation, UT Southwestern researchers found that the same treadmill test predicts how likely a person is to die of heart disease or stroke more accurately than assessing the risk using only typical prediction tools such as blood pressure and cholesterol levels.

Heart disease is a leading killer in
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Contact: LaKisha Ladson
lakisha.ladson@utsouthwestern.edu
214-648-3404
UT Southwestern Medical Center
Source:Eurekalert

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