Table 2

Prevalence of training-related ECG changes as per 2010 ESC criteria and the Seattle Criteria in 1078 elite athletes

n (%)
Group 1 ECG changes ESC criteria 2010
 Sinus bradycardia582 (54)
 Sinus arrhythmia222 (20.6)
 First degree AV block81 (7.5)
 Mobitz type 1 2nd degree AV block1 (0.1)
 Incomplete RBBB308 (28.6)
 Early repolarisation pattern414 (38.4)
 LVH on voltage criteria304 (28.2)
 Romhilt-Estes score ≥5134 (12.4)
 ≥1 group 1 change937 (86.7)
 ≥2 group 1 changes615 (57)
Training related ECG changes Seattle Criteria 2013 As above, plus
 Low atrial rhythm12 (1)
 Junctional escape rhythm4 (0.4)
 Isorhythmic dissociation12 (1.1)
  • AV, atrioventricular; ESC, European Society of Cardiology; LVH, left ventricular hypertrophy; RBBB, right bundle branch block.