engleski

Athlete's heart

The term "athlete's heart" denotes significantly enlarged dimension and funcional abilities of the heart as a result of adaptive reaction to intensive, long-lasting sport training, primarily of the aerobic endurance type. The adequate aerobic training elicits adaptation changes in the myocard similar to those that resistance training provokes in skeletal muscles. Basically, this includes muscle hypertrophy with the multiplication of myofibrils, mitochondria and myoglobin, as well as enlarged concentration of enzymes and energy stores. Additional adaptation of mechanisms regulating heart activity also arises.

cardiac hypertrophy ; sports ; physiology

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