Table 2.
Post-race changes in all triathletes.
| Parameter | Baseline All triathletes (n = 30) | Post-race All triathletes (n = 30) | P value pre vs. post-race |
|---|---|---|---|
| Laboratory | |||
| Troponin T, pg/ml | 7 ± 4 | 57 ± 86 | <0.01 |
| Creatine kinase, U/I | 220 ± 173 | 466 ± 246 | <0.0001 |
| Creatine kinase-MB, U/I | 10 ± 14 | 35 ± 15 | <0.0001 |
| NT-proBNP, pg/ml | 52 ± 90 | 127 ± 121 | <0.0001 |
| Haematocrit, % | 44 ± 3 | 42 ± 3 | <0.01 |
| Haemoglobin, mg/dl | 14.7 ± 0.8 | 14.4 ± 0.9 | <0.01 |
| Creatinine, mg/dl | 1.01 ± 0.14 | 1.12 ± 0.18 | <0.0001 |
| CMR – left heart | |||
| LVEDVi, ml/m2 | 102 ± 15§ | 96 ± 14 | <0.001 |
| LVESVi, ml/m2 | 38 ± 8* | 37 ± 10 | 0.512 |
| LV ejection fraction, % | 62 ± 6 | 62 ± 6 | 0.630 |
| Heart rate, beats/min | 54 ± 9‡ | 67 ± 10 | <0.0001 |
| LV cardiac index, l/min/m2 | 3.4 ± 0.6 | 3.9 ± 0.6 | <0.0001 |
| LV mass index, g/m2 | 82 ± 10§ | 82 ± 10 | 0.911 |
| LAEDVi, ml/m2 | 18 ± 7† | 16 ± 5 | 0.070 |
| LAESVi, ml/m2 | 47 ± 12§ | 37 ± 9 | <0.0001 |
| LA ejection fraction, % | 62 ± 10 | 57 ± 7 | <0.01 |
| CMR – right heart | |||
| RVEDVi, ml/m2 | 104 ± 19‡ | 98 ± 16 | <0.05 |
| RVESVi, ml/m2 | 43 ± 13* | 41 ± 12 | 0.136 |
| RV ejection fraction, % | 59 ± 8 | 59 ± 7 | 0.865 |
| RAEDVi, ml/m2 | 28 ± 8† | 28 ± 9 | 0.612 |
| RAESVi, ml/m2 | 51 ± 14† | 46 ± 11 | <0.05 |
| RA ejection fraction, % | 44 ± 10 | 41 ± 8 | 0.162 |
| RV cardiac index, l/min/m2 | 3.3 ± 0.6 | 3.8 ± 0.7 | <0.001 |
| Mapping parameters | |||
| Global T2, ms | 54 ± 3 | 53 ± 3 | 0.797 |
| Global T1, ms | 989 ± 28‡ | 989 ± 21 | 0.926 |
| Extracellular volume (%) | 25.1 ± 1.6 | ||
| Diastolic function | |||
| Early peak filling rate index, ml/s/m2 | 241 ± 67 | 239 ± 60 | 0.855 |
| Atrial peak filling rate index, ml/s/m2 | 134 ± 37 | 165 ± 54 | <0.01 |
| Peak filling rate ratio | 1.9 ± 0.8* | 1.6 ± 0.7 | <0.05 |
Numbers are mean ± SD for continuous and n (%) for categorical data.
*P < 0.05, †P < 0.01, ‡P < 0.001 and §P < 0.0001 for triathletes at baseline compared to controls.
LA: left atrial; LAEDVi: left atrial end-diastolic volume index; LAESVi: left atrial end-systolic volume index; LGE: late gadolinium enhancement; LV: left ventricular; LVEDVi: left ventricular end-diastolic volume index; LVESVi: left ventricular end-systolic volume index; NT-proBNP: N-terminal pro-brain natriuretic peptide; RA: right atrial; RAEDVi: right atrial end-diastolic volume index; RAESVi: right atrial end-systolic volume index; RV: right ventricular; RVEDVi: right ventricular end-diastolic volume index; RVESVi: right ventricular end-systolic volume index; VO2max: maximal oxygen uptake.