The developing athlete's heart: a cohort study in young athletes transitioning through adolescence.

Background: Athlete's heart is a term used to describe physiological changes in the hearts of athletes, but its early development has not been described in longitudinal studies. This study aims to improve our understanding of the effects of endurance training on the developing heart.

Methods: Cardiac morphology and function in 48 cross-country skiers were assessed at age 12 years (12.

Morphological changes and myocardial function assessed by traditional and novel echocardiographic methods in preadolescent athlete's heart.

Background Athlete's heart is a term used to describe the morphological and functional changes in the hearts of athletes. Recent studies suggest that these changes may occur even in preadolescent athletes. This study aims to improve our understanding of the changes occurring in the preadolescent athlete's heart.