Table 5.
Pre-race | Post- race | Change in absolute | Change in percent | P-value | |
---|---|---|---|---|---|
Male 24-hr ultra-runners (n = 8) | |||||
Age (yrs.) | 37.5 ± 8.1 | ||||
Body mass (kg) | 71.1 ± 5.9 | 70.0 ± 6.7 | −1.1 ± 1.2* | −1.6 ± 1.8* | <0.05 |
Plasma sodium (mmol/L) | 140.1 ± 1.2 | 139.1 ± 2.0 | −1.0 ± 2.3 | −0.7 ± 1.7 | 0.26 |
Plasma potassium(mmol/L) | 6.7 ± 1.1 | 5.1 ± 0.6 | −1.6 ± 1.3* | −21.8 ± 17.4* | <0.05 |
Plasma creatinine (mg/dL) | 0.9 ± 0.1 | 0.9 ± 0.2 | 0.0 ± 0.1 | 10.6 ± 12.7 | 0.06 |
Plasma creatine kinase (U/L) | 224.0 ± 192.0 | 8813.8 ± 10536.4 | 8589.8 ± 10500.7* | 5782.1 ± 8659.2* | <0.05 |
Plasma creatine clearance (ml/min) | 10657.2 ± 1614.2 | 9623.2 ± 1837.4 | −1034.1 ± 1121.0* | −9.8 ± 11.7* | <0.05 |
Urine creatinine (mmol/L) | 7.5 ± 1.3 | 17.5 ± 2.6 | 10.0 ± 2.7** | 139.2 ± 47.9** | <0.01 |
Female 24-hr ultra-runners (n = 4) | |||||
Age (yrs.) | 40.0 ± 7.7 | ||||
Body mass (kg) | 56.9 ± 5.2 | 56.3 ± 5.1 | −0.6 ± 0.6 | −1.0 ± 1.2 | 0.16 |
Plasma sodium (mmol/L) | 139.8 ± 2.6 | 137.8 ± 3.4 | −2.0 ± 3.4 | −1.4 ± 2.4 | 0.32 |
Plasma potassium(mmol/L) | 6.2 ± 0.3 | 4.6 ± 0.2 | −1.7 ± 0.2** | −26.4 ± 2.9** | <0.01 |
Plasma creatinine (mg/dL) | 0.7 ± 0.1 | 0.7 ± 0.1 | 0.01 ± 0.0 | 9.0 ± 7.3 | 0.18 |
Plasma creatine kinase (U/L) | 99.0 ± 23.5 | 5507.1 ± 6600.4 | 5408.1 ± 6580.2** | 4765.0 ± 4806.5** | 0.19 |
Plasma creatine clearance (ml/min) | 10353.4 ± 795.3 | 9547.0 ± 845.9 | −806.4 ± 838.7 | −7.6 ± 7.9 | 0.15 |
Urine creatinine (mmol/L) | 4.5 ± 2.1 | 15.2 ± 0.2 | 10.7 ± 1.9** | 327.8 ± 276.6** | <0.01 |
Note: Results are presented as mean ± SD; * = P < 0.05, ** = P < 0.01