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athlete's heart

American  
Or athletic heart

noun

  1. nonpathological enlargement of the heart resulting from intensive aerobic exercise.


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Because an athlete’s heart is larger than a nonathlete’s, stroke volume increases, so the athletic heart can deliver the same amount of blood as the nonathletic heart but with a lower heart rate.

From Textbooks • Jun. 19, 2013

"Athletes who train regularly have hearts bigger than the average person, even have different-shaped hearts, so the challenge is for us to determine what a 'normal' athlete's heart looks like."

From Seattle Times • May 3, 2012

Even if Joe Tafoya subconsciously knew the post-surgery verdict on his injured foot, his athlete's heart was ready to fight against it.

From Seattle Times • Apr. 8, 2012

And even escape into the anonymity of the Army is impossible: Flynn has "athlete's heart."

From Time Magazine Archive

It is a fault with a lot of trainers without long experience that they work an athlete's heart overtime.

From The High School Boys in Summer Camp by Hancock, H. Irving (Harrie Irving)