Workouts sculpt heart as well as muscles

Maybe.

Whether they are right or wrong, this for sure is wrong:

"Exercise can cause structural changes in the heart, and these changes vary depending on the type of training an athlete is engaged in, new research shows."

Exercise will not do squat. Training will improve fitness.

This is also wrong:

"To investigate, Baggish and colleagues studied 40 endurance athletes and 24 strength athletes, examining their hearts with echocardiography before and after 90 days of team training."

There are 3 types of athletes: power, speed and endurance.

Football players (the incorrectly-called "strength group") are distributed along the gamut of speed athletes depending on their position.

In any event: training good, exercise stupid.