Word: abnormalitiesã
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...marathon,” Wood said. Wood’s study tracked the hearts of 60 marathoners using echocardiography, which produces an image of the heart by means of sound waves. That method, along with blood sample tests, revealed that under-trained marathon runners suffered from a host of abnormalities??including decreased right ventricular function and elevated levels of two enzymes linked to heart stress. These negative symptoms were much less pronounced in those who ran at least 45 miles per week before the marathon according to the study. For example, under-trained marathoners exhibited levels...
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