Biochemical parameters, 5–8 days before, directly after, 1 day after and 5–8 days after the race (n=52)
| Parameter | Before | Directly after | Day 1 | Days 5–8 |
| CK mean±SD | 3.79±4.1 | 51.1±45.4 | 67.6±55.2 | 4.1±3.1 |
| Range | 0.82–26 | 4.9–210.0 | 5.0–280.0 | 0.9–17.0 |
| Path. values, n (%) | 7 (13.5) | 51 (98) | 51 (98) | 7 (13.5) |
| Myoglobin | 42.8±32.6 | 2087.7±2349.8 | 432.2±682.8 | 41.7±25.9 |
| Range | 21.0–160.0 | 130.0–17 000.0 | 28.0–4800.0 | 21.0–160.0 |
| Path. values, n (%) | 7 (13.5) | 52 (100) | 51 (98) | 4 (8) |
| cTnT | 8.9±4.8 | 75.7±80.5 | 25.9±18.1 | 7.2±2.7 |
| Range | 4.0–28.0 | 12.0–440.0 | 6.0–100.0 | 4.0–17.0 |
| Path. values, n (%) | 7 (13.5) | 51 (98) | 38 (73) | 1 (2) |
| MHC-α | 1.33±0.53 | 2.57±0.78 | 1.51±0.53 | 1.83±0.76 |
| Range | 0.51–3.13 | 1.28–4.47 | 0.57–2.97 | 0.19–3.31 |
| p-NT-proBNP | 57.5±19.5 | 775.6±683.6 | 430.9±493.7 | 62.4±28.9 |
| Range | 49.0–130.0 | 92.0–4700.0 | 53.0–3600.0 | 49–180 |
| Path. values, n (%) | 0 (0) | 46 (88.5) | 29 (56) | 0 (0) |
| Creatinine | 80.8±13.7 | 99.6±19.9 | 86.0±15.1 | 81.3±11.7 |
| Range | 60,0–134.0 | 74.0–161.0 | 51.0–139.0 | 58.0–111.0 |
| Path. values, n (%) | 3 (6) | 16 (31) | 3 (6) | 1 (2) |
| hs-CRP | 0.67±1.15 | 5.64±4.16 | 49.46±23.16 | 4.62±2.51 |
| Range | 0.00–5.00 | 0.00–19.00 | 15.00–119.00 | 1.00–13.00 |
| Path. values n (%) | 1 (2) | 26 (50) | 52 (100) | 25 (48) |
CK, µkat/L (reference interval <6.7).
Creatinine, µmol/L (reference interval 60–105).
Myoglobin, µg/L (reference interval<72).
cTnT, ng/L (reference interval<15).
P-NT-proBNP, ng/L (reference interval<300).
Hs-CRP, mg/L (reference interval<5).
MHC-α, μg/L (reference interval not determined).
CK, creatine kinase; cTnT, cardiac troponin-T; hs-CRP, high sensitive C reactive protein; MHC-α, myosin heavy chain-alpha; NT-proBNP, N-terminal prohormone of brain natriuretic peptide.