Prevalence of ‘training-related’ ECG findings
| Total (n=330) | Males (n=186) | Females (n=144) | |
|---|---|---|---|
| Sinus arrhythmia* | 180 (55%) | 97 (52%) | 83 (57%) |
| Sinus bradycardia | 169 (51%) | 95 (51%) | 74 (51%) |
| Heart rate 30–60 bpm. | |||
| Early repolarisation (any territory) | 174 (53%) | 141 (76%)† | 33 (23%) |
| Incomplete RBBB | 140 (42%) | 82 (44%) | 58 (40%) |
| RSR’ pattern in V1 | |||
| QRS <100 ms | 90 (27%) | 37 (20%)† | 53 (37%) |
| QRS 100–120 ms | 50 (15%) | 45 (24%)† | 5 (3%) |
| Isolated QRS voltage criteria for LVH‡ | 107 (32%) | 95 (51%)† | 12 (8%) |
| Sokolow Lyon criteria | 93 (28%) | 81 (43%)† | 12 (8%) |
| Cornell criteria | 46 (14%) | 36 (19%)† | 10 (7%) |
| 1st degree AV block | 11 (3%) | 7 (4%) | 4 (3%) |
| PR interval >200 ms | |||
| Junctional escape rhythm* | 5 (2%) | 3 (2%) | 2 (1%) |
| Ectopic atrial rhythm* | 4 (1%) | 2 (1%) | 2 (1%) |
| Mobitz Type I 2nd degree AV block* | 1 (<1%) | 0 (0%) | 1 (1%) |
Text in italics are definitions of ECG findings according to 2010 ESC and 2013 Seattle criteria.
*ECG finding was defined as ‘normal’ according to the Seattle criteria, but was not defined in the ESC criteria.
†p<0.001 for males versus females.
‡Data presented are for isolated LVH voltage criteria considering definitions for left atrial enlargement, TWI, and pathologic Q waves under the 2013 Seattle Criteria..
AV, atrioventricular; LVH, left ventricular hypertrophy; RBBB, right bundle branch block; TWI, T wave inversion.