Clinical characteristics of the total cohort (47 athletes)
| Age (years) | 42 (11) |
| Male | 45 (95.7%) |
| Suggestive or suspicious family history | 2 (4.3%) |
| Endurance, non-endurance sport | 41 (87%), 6 (13%) |
| Level of competition (elite, amateur competitive, recreational) | 29 (62%), 9 (19%), 9 (19%) |
| Amount of exercise per week (h) | 13.6 (8.6) |
| Years of sport practise | 18.8 (9.1) |
| Presenting symptom—aborted sudden death | 8 (17.0%) |
| Syncope or pre-syncope | 30 (63.8%) |
| Palpitations | 8 (17.0%) |
| Screening | 1 (2.1%) |
| ARVC Task Force Criteria—2 major criteria | 3 (6.4%) |
| 1 Major plus 2 minor criteria | 10 (21.2%) |
| 4 Minor criteria | 11 (23.4%) |
| 2, 3 Minor criteria | 17 (36.2%) |
| 1 Minor criteria | 6 (12.8%) |
| ECG abnormalities—epsilon wave or QRS≥110 ms in V1 or V2 | 9 (19%) |
| Negative T-waves beyond V2 | 18 (38%) |
| Late potentials on signal-averaged ECG | 12 (26% of 34 available) |
| Structural RV abnormalities—severe, mild | 6 (12.8%), 24 (51.1%) |
| Major arrhythmic event* during follow-up | 15 (31.9%) |
↵* Any of: aborted sudden death, appropriate ICD discharge or recurrence of sustained ventricular tachycardia.