ECG findings classified by 2010 ESC groups for all the respective analysed groups
| Category | Group 0 | Group 1 | Group 2 |
| All athletes, n=273 | 83 (31%) | 173 (63%) | 17 (6.2%) |
| Entrance level (128) | 46 | 77 | 5 (3.9%) |
| >1 year in programme (145) | 37 | 96 | 12 (8.3%) |
| High maximal uptake (VO2max) sport (236) | 64 | 156 | 16 (6.8%) |
| Static sport (37) | 19 | 17 | 1 (2.7%) |
| High VO2max—continuous (103) | 20 | 76 | 9 |
| High VO2max—repeated effort (133) | 44 | 80 | 7 |
| Entrance and High VO2max sport (106) | 35 | 66 | 5 |
| Entrance and Static sport (20) | 9 | 10 | 0 |
| >1 year in programme and high VO2max sport (130) | 29 | 90 | 11 |
| >1 year in programme and Static sport17 | 10 | 7 | 0 |
| Entrance and High VO2max sport—continuous (46) | 12 | 32 | 2 |
| Entrance and High VO2max—repeated effort (62) | 24 | 35 | 3 |
| >1 year in programme and high VO2max sport—continuous (57) | 8 | 44 | 5 (8.7%) |
| >1 year in programme and high VO2max—repeated effort (71) | 20 | 45 | 6 (8.4%) |
Continuous=performance occurs at a high percentage of maximal oxygen uptake with predominately a continuous consistent effort, (2) Repeated effort=performance occurs at a high percentage of maximal oxygen uptake with repeated sprinting and/or jumping efforts and (3) Static=performance occurs at a lower percentage of maximal oxygen uptake and generally of a static nature.