Association of hypernatremia with age, gender, body mass index and fluid intake.
| Hypernatremia(n=6) | No hypernatremia (n=75) | P values | |
| Age, years (SD) | 46.7 (14.2) | 40.8 (12.3) | 0.33 |
| Sex | |||
| Male, n (%) | 5 (8.5) | 54 (91.5) | 0.49 |
| Female, n (%) | 1 (4.5) | 21 (95.4) | |
| Body mass index (SD) | 22.8 (9) | 24.1 (2.4) | 0.13 |
| Water intake, mL (IQR) | 162.5 (0–700) | 800 (600–1200) | 0.02 |
| Sport drink with electrolyte intake, mL (IQR) | 30 (0–80) | 80 (40–120) | 0.04 |
| Percentage of water loading in total fluid intake, % (IQR) | 86.5 (0–100) | 92 (87–95) | 0.77 |
| Race time, min (IQR) | 103.5 (98–116) | 119 (105–132) | 0.06 |
| Distance between fluid intake, km (IQR) | 7.5 (3–21) | 3 (3–4) | 0.01 |