I think you: may be referring to so called "Athletes Heart" , the cardiac hypertrophy (enlargement) from regular EXTENDED exercise (such as Marathon running) and its more likely than not due to an arrhythmia (fatal hear rhythm ...) Hope this answers your question Dr Z
Answered 5/27/2017
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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