Table 2

Common ECG findings in athletes. Training-related ECG alterations are common, physiological adaptations to regular exercise and are considered normal variants in athletes

Normal ECG finding
Sinus bradycia
Sinus arrhythmia
First-degree AV block
Incomplete RBBB
Early repolarisation
Isolated QRS voltage criteria for LVH*
  • * Isolated increases in QRS amplitude are common in trained athletes. However, QRS voltage criteria for LVH+any non-voltage criteria for LVH (such as atrial enlargement, left axis deviation, a ‘strain’ pattern of repolarisation, ST-segment depression, T-wave inversion or pathological Q waves) are abnormal and require further evaluation.

  • AV, atrioventricular; LVH, left ventricular hypertrophy; RBBB, right bundle branch block.