Sudden bursts in the intensity of moderate to intense physical activity, like jogging or having sex, significantly increase the risk of heart attack, especially in people who do not get regular exercise.
Doctors have long known that physical activity can cause serious heart problems, but a recent study conducted by researchers the United States helped to quantify the risk, said Dr. Issa Dahabreh of Tufts Medical Center in Boston, whose study was published in the Journal of the American Medical Association.
The team analyzed data from 14 studies looked at the relationship between exercise, sex and risk of heart attack or sudden cardiac death, fatal heart rhythm that causes the heart to stop blood flow.
Researchers found people tend to be 3.5 times more likely to get heart attack or sudden cardiac death when they exercise than when they did not.
The men were 2.7 times more likely to get heart attack when they have sex or as soon thereafter as compared with when they do not perform the activity. (This finding does not apply to sudden cardiac death because no studies have looked at the relationship between sex and cardiac death.)
Jessica Paul, other researchers from Tufts who also worked on the study says the risk is quite high as shown on the study. However, brief periods of increased risk.
"The risk is high only for short periods of time (1 to 2 hours) during and after physical activity or sexual," Paul said as reported by Reuters on Tuesday (22 / 3).
Therefore, the risk to individuals over a period of one year is still quite small, he said.
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