Establishing stable sinus rhythm in an endurance athlete with paroxysmal supraventricular tachycardia improves haemodynamical performance during exercise testing.

Atrial fibrillation is a commonly known heart rhythm abnormality that occurs not only in the general population but also in endurance athletes. Various studies have even described an increased prevalence among athletes.[1–4][1] We recently presented the case of a well-experienced 60-year-old man