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Afterward, researchers divided them into two groups based on the frequency of leg twitches. The 45 percent who twitched at least 35 times per hour were more likely to have the thick-heart condition than the other 55 percent of study participants who kicked less often.
Looking at all study participants about three years later, researchers saw that those with severely thick hearts -- about a quarter of the total group -- were more than twice as likely to have suffered a heart problem or to have died.
The study was funded by the National Heart, Lung and Blood Institute and a private grant.
People with restless legs shouldn't panic, but it's worth talking with doctors about whether more tests are needed to look for an enlarged heart, Jahangir said.
"Don't ignore it. Discuss it with your physician," he said.
Heart meeting: http://www.acc.org/
Copyright 2011 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.
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