Table 2.
Screening results: ECG, 24-h Holter monitoring, and CPET.
| Parameter | Athletes (n = 47) | |
|---|---|---|
| 12-lead ECG | ||
| TWI, n (%) | 2 (4) | |
| LAD, n (%) | 3 (6) | |
| Newly detected abnormal ECG, n (%) | 0 (0) | |
| 24-h ECG Holter monitoring (12 lead) | ||
| SVPCs, n (%) | 40 (85) | |
| SVPCs >500/h, n (%) | 3 (6) | |
| PVCs, n (%) | 32 (68) | |
| PVCs | <50/24 h, n (%) | 26 (55) |
| 50–500/24 h, n (%) | 2 (4) | |
| >500/24 h, n (%) | 4 (9) | |
| Cardiopulmonary test (CPET) | ||
| HR max, bpm | 169 ± 9 | |
| SBP max, mmHg | 174 ± 17 | |
| DBP max, mmHg | 75 ± 8 | |
| Watt max, W | 304 ± 94 | |
| VO2 max, L/min | 3223 ± 781 | |
| VO2/Kg max, mL/kg/min | 42 ± 6 | |
| VO2/Kg AT, mL/kg/min | 22 ± 4 | |
| VE max, L/min | 111 ± 34 | |
| VE/VCO2 slope | 25 ± 5 | |
| VO2/HR, L/min/bpm | 19 ± 5 | |
| RER max | 1.2 ± 0.1 | |
| Exercise-induced VA, n (%) | 6 (13) | |
| Complex exercise-induced VA, n (%) | 3 (6) | |
| Newly diagnosed exercise-induced VA, n (%) | 3 (6) | |
AT: anaerobic threshold; CVA: complex ventricular arrhythmias; DPB max: maximal diastolic blood pressure; ECG: electrocardiogram; HR max: maximal heart rate; LAD: left axial deviation; PVCs: premature ventricular contractions; RER: respiratory exchange ratio; SBP max: maximal systolic blood pressure; SVPCs: supra-ventricular premature contractions; TWI: T wave inversion; VA: ventricular arrhythmias; VE max: maximal ventilation; VE/VCO2 slope: ventilatory efficiency slope; VO2 max: maximal oxygen uptake.