The ability to identify an abnormality on the 12-lead ECG, suggestive of underlying cardiac disease associated with ... 6,11 Heart rates ≥30 beats/min are considered normal in highly trained athletes.

Sinus rhythm (a.k.a. normal sinus rhythm) refers to the normal heart beat originating from the sinoatrial node. This is manifested as an upright P wave in lead II of the ECG. Sinus bradycardia ...

ECG interpretation ... classify the ECG as: (1) ‘normal’—no further evaluation needed or (2) ‘abnormal’—further evaluation needed. Normal ECGs include common, training-related findings in athletes ...