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"These elevated risks are only for a short period of time (1 to 2 hours) during and after the physical or ######ual activity," Paulus said in a telephone interview.
CHICAGO - Sudden bursts of moderate to intense physical activity -- such as jogging or having ###### -- significantly increase the risk of having a heart attack,giubbotti moncler, especially in people who do not get regular exercise,Piumini Moncler, US researchers said on Tuesday.
The team analyzed data from 14 studies looking at the link between exercise, ###### and the risk of heart attacks or sudden cardiac death -- a lethal heart rhythm that causes the heart to stop circulating blood.
"If you take 10,000 people, each individual session of physical or ######ual activity per week can be associated with an increase of 1 to 2 cases of heart attack or sudden cardiac death per year,louboutin pas cher," Paulus said.
Doctors have long known that physical activity can cause serious heart problems, but the new study helps to quantify that risk,doudoune moncler, Dr. Issa Dahabreh of Tufts Medical Center in Boston,christian louboutin pas cher, whose study appears in the Journal of the American Medical Association.
Because of that,doudoune moncler, the risk to individuals over the course of a year is still quite small, she said.
What it does mean is that people who do not exercise regularly need to start any exercise program slowly, gradually increasing the intensity of the workout over time.
They found people are 3.5 times more likely to get a heart attack or have sudden cardiac death when they are exercising compared to when they are not.
Jessica Paulus, another Tufts researcher who worked on the study,Moncler outlet, said the risk is fairly high as such studies go. But the period of increased risk is brief.
She said it is important to balance the findings with other studies showing that regular physical activity reduces the risk of heart attacks and sudden cardiac death by 30 percent.
"What we really don't want to do is for the public to walk away from this and think exercise is bad," she said.
And they are 2.7 times more likely to get a heart attack when they are having ###### or immediately afterward compared with when they are not. (These findings do not apply to sudden cardiac death because there were no studies looking at the link between ###### and cardiac death.)

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