Table 3 Haematological and urinary parameters (n = 25)
Parameter | Pre-race | Post-race | Absolute change | Change (%) |
|---|---|---|---|---|
|  | M ± SD | M ± SD |  |  |
Male ultra-MTBers(n = 16) |  |  |  |  |
Haematocrit (%) | 43.1 ± 3.3 | 42.6 ± 3.1 | -0.5 ± 3.7 | -0.7 ± 8.8 |
Plasma sodium (mmol/L) | 138.2 ± 1.4 | 137.8 ± 2.3 | -0.4 ± 2.9** | -0.3 ± 2.1 |
Plasma urea (mmol/L) | 6.1 ± 1.3 | 13.5 ± 4.1 | 7.4 ± 3.8** | 124.0 ± 67.2 |
Plasma osmolality (mosmol/kg H2O) | 289.4 ± 4.1 | 293.6 ± 4.4 | 4.2 ± 4.5** | 1.5 ± 1.6 |
Urine urea (mmol/L) | 239.3 ± 172.1 | 576.0 ± 78.0 | 336.7 ± 174.8** | 298.0 ± 315.5 |
Urine osmolality (mosmol/kg H2O) | 415.7 ± 190.3 | 776.7 ± 133.4 | 361.0 ± 184.4** | 132.0 ± 132.4 |
Urine specific gravity (g/mL) | 1.013 ± 0.002 | 1.022 ± 0.004 | 0.009 ± 0.004** | 0.8 ± 0.3 |
Female ultra-MTBers (n = 9) |  |  |  |  |
Haematocrit (%) | 42.0 ± 2.7 | 40.0 ± 2.8 | -2.0 ± 4.1 | -4.5 ± 10.0 |
Plasma sodium (mmol/L) | 137.4 ± 2.8 | 137.1 ± 1.8 | -0.3 ± 3.0 | -0.2 ± 2.2 |
Plasma urea (mmol/L) | 5.8 ± 1.5 | 8.7 ± 2.5 | 2.9 ± 1.2** | 46.9 ± 18.5 |
Plasma osmolality (mosmol/kg H2O) | 292.2 ± 2.8 | 290.6 ± 4.6 | -1.7 ± 4.3 | -0.6 ± 1.5 |
Urine urea (mmol/L) | 290.5 ± 204.9 | 463.0 ± 172.5 | 172.5 ± 246.5 | 190.6 ± 292.3 |
Urine osmolality (mosmol/kg H2O) | 724.3 ± 214.0 | 716,4 ± 329.1 | -7.9 ± 276.5 | -1.0 ± 36.6 |
Urine specific gravity (g/mL) | 1.000 ± 0.005 | 1.001 ± 0.005 | 0.001 ± 0.005 | 0.1 ± 0.4 |