She will soon be an Olympic champion....

[James_Smith]

@AJP

It is my understanding that ventricular hypertrophy, along with a slight increase in ventricular cavity size, contributes to increased stroke volume and cardiac output and is therefore beneficial to athletes and accounts for lower maximal heart rates often seen in elite athletes.

The key is to distinguish between an adaptation that is desirable and appropriate for one level of biological maturity yet undesirable and misappropriate for another.

See Number 2’s response in reference to the latter.