Table 3 Post-race analysis by sodium intake in normonatremic participants
Variable | Low sodium intake Mean (SD); Median (min–max) | Medium sodium intake Mean (SD) Median (min–max) | High sodium intake Mean (SD); Median (min–max) | P value |
|---|---|---|---|---|
Runner characteristics, n (%) | 34 (31.2) | 40 (36.7) | 35 (32.1) | – |
Body weight change, kg | − 3 (4.2); − 2 (− 14–2) | − 3 (5.1); − 2 (− 14–2) | − 5 (5.8); − 2 (− 16–2) | 0.44 |
Hydration | ||||
Dehydration, n (%) | 10 (35.7) | 11 (32.4) | 11 (36.7) | 0.82 |
Euhydration, n (%) | 11 (39.3) | 13 (38.2) | 14 (46.7) | |
Overhydration, n (%) | 7 (25) | 10 (29.4) | 5 (16.7) | |
Sodium intake rate, mg/h | 135 (46.1); 129 (40–200) | 266 (51.7); 250 (210–360) | 577 (264.8); 495 (370–1500) | < 0.01 |
Total sodium ingested, g | 2 (1); 2 (1–4) | 4 (1.1) ; 4 (2–7) | 8 (3.2); 7 (3–18) | < 0.01 |
Pace, min/km | 11 (3.3); 11 (6–18) | 11 (3); 9 (6–18) | 11 (3.3); 10 (7–18) | 0.85 |
Total race time, h | 15 (4.3); 14 (8–23) | 14 (3.8); 12 (8–23) | 14 (4.2); 13 (9–23) | 0.84 |
Finishing Rank, n (%) | ||||
Top 10% | 4 (12.1) | 5 (12.8) | 3 (8.8) | 0.98 |
11–25 % | 4 (12.1) | 7 (18) | 7 (20.6) | |
26–50 % | 9 (27.3) | 11 (28.2) | 10 (29.4) | |
51–75% | 9 (27.3) | 8 (20.5) | 6 (11.7) | |
> 75% | 7 (21.2) | 8 (20.5) | 8 (23.5) | |