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Extreme sports push hearts

A gene for super-fitness may let athletes go over the top.

Athletes who carry one type of a well-known 'fitness' gene might actually push themselves so hard that they tire out their hearts. That's the finding from a study of individuals who competed in one of the most gruelling races in the world.

Read the story here.

Posted by Helen Pearson on July 26, 2006 09:42 PM |

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