Table 6.
Age, anthropometric, blood and urine characteristics of the 100-km ultra-runners (n = 19)
| Pre-race | Post- race | Change in absolute | Change in percent | P-value | |
|---|---|---|---|---|---|
| Male 100 km ultra-runners (n = 4) | |||||
| Age (yrs.) | 43.9 ± 9.6 | ||||
| Body mass (kg) | 67.0 ± 8.5 | 65.1 ± 7.8 | −1.8 ± 1.3** | −2.6 ± 1.7** | <0.01 |
| Plasma sodium (mmol/L) | 139.6 ± 2.2 | 137.8 ± 2.9 | −1.8 ± 3.6 | −1.3 ± 2.6 | 0.09 |
| Plasma potassium(mmol/L) | 6.2 ± 1.0 | 5.6 ± 0.7 | −0.6 ± 1.6 | −6.2 ± 24.9 | 0.18 |
| Plasma creatinine (mg/dL) | 0.9 ± 0.2 | 1.1 ± 0.3 | 0.2 ± 0.3 | 25.8 ± 48.1 | 0.05 |
| Plasma creatine kinase (U/L) | 227.1 ± 148.9 | 4357.1 ± 5822.5 | 4130.0 ± 5742.7* | 1925.5 ± 2180.3* | <0.05 |
| Plasma creatine clearance (ml/min) | 8985.3 ± 2219.0 | 7327.7 ± 2080.2 | −1657.5 ± 2146.8** | −16.7 ± 17.9* | <0.05 |
| Urine creatinine (mmol/L) | 6.6 ± 4.6 | 18.5 ± 4.1 | 11.9 ± 5.8** | 365.2 ± 332.1** | <0.01 |
| Female 100 km ultra-runners (n = 5) | |||||
| Age (yrs.) | 40.6 ± 5.8 | ||||
| Body mass (kg) | 59.0 ± 7.7 | 57.6 ± 6.6 | −1.4 ± 1.2 | −2.3 ± 1.6 | 0.05 |
| Plasma sodium (mmol/L) | 138.4 ± 2.3 | 136.0 ± 1:6 | −2.4 ± 2.7 | −1.7 ± 1.9 | 0.12 |
| Plasma potassium(mmol/L) | 5.2 ± 0.9 | 5.5 ± 0.9 | 0.3 ± 0.6 | 7.3 ± 13.0 | 0.28 |
| Plasma creatinine (mg/dL) | 0.8 ± 0.1 | 1.0 ± 0.2 | 0.2 ± 0.1* | 25.6 ± 20.6* | <0.05 |
| Plasma creatine kinase (U/L) | 251.1 ± 187.7 | 1949.3 ± 1357.3 | 1698.2 ± 1413.2* | 990.7 ± 748.9* | 0.06 |
| Plasma creatine clearance (ml/min) | 9335.1 ± 1748.4 | 7463.4 ± 2240.3 | −1871.7 ± 1199.4* | −20.6 ± 12.9* | <0.05 |
| Urine creatinine (mmol/L) | 8.2 ± 4.8 | 19.4 ± 7.4 | 11.2 ± 6.7* | 192.2 ± 153.0* | <0.05 |
Note: Results are presented as mean ± SD; * = P < 0.05, ** = P < 0.01