Table 3.
Variables included in laboratory-based cycling subset (model 3)
| Mean | SD | Median | Range (Min to Max) | |
|---|---|---|---|---|
| Dependent variable | ||||
| Measured whole body sweat [Na+], mmol/L | 41.4 | 15.6 | 39.2 | 15.4–92.8 |
| Independent variables | ||||
| Pre-exercise body mass, kg | 74.75 | 12.34 | 72.16 | 55.03–100.26 |
| Relative maximal oxygen consumption, mL/kg/min | 48.4 | 8.1 | 47.3 | 31.6–65.6 |
| Exercise energy expenditure, kcal/h | 639 | 150 | 629 | 425–976 |
| Fluid balance (% change in body mass from baseline) | −0.99 | 0.71 | −1.03 | −2.21 to 1.34 |
| Pre-exercise urine specific gravity | 1.010 | 0.008 | 1.007 | 1.002–1.027 |
| Whole body sweating rate, L/h | 0.94 | 0.32 | 0.91 | 0.43–1.86 |
| Exercise sodium intake, mmol | 32 | 18 | 27 | 9–100 |
| Dietary sodium intake 48-h before exercise, mmol/day | 176 | 80 | 162 | 75–402 |
n = 48 (33 men, 15 women; 24–41 yrs; 43 White/non-Hispanic; 2 White/Hispanic, 2 Asian/non-Hispanic, 1 Black/non-Hispanic).