TABLE 2.
Biochemical variables following the acute sodium intervention
| LSM | HSM | p‐value | ||||||
|---|---|---|---|---|---|---|---|---|
| BASE | POST | BASE | POST | Time | Meal | Time × meal | ||
| Serum Na+ (mmol/L) | 139.6 ± 2.0 | 140.4 ± 1.8* | 139.8 ± 1.9 | 141.5 ± 2.2 * | .001 | .03 | .02 | |
| Serum K+ (mmol/L) | 3.9 ± 0.3 | 4.0 ± 0.3 | 3.9 ± 0.3 | 4.1 ± 0.4 | .008 | .83 | .15 | |
| Serum Cl− (mmol/L) | 104.2 ± 2.1 | 104.5 ± 2.2* | 104.7 ± 1.9 | 105.8 ± 1.9 * | <.001 | .001 | .002 | |
| Plasma osmolality (mOsm/kg H2O) | 290.1 ± 4.1 | 291.6 ± 4.0* | 289.6 ± 3.7 | 292.8 ± 4.0* | <.001 | .88 | .004 | |
| Hematocrit (%) | 40.8 ± 3.7 | 41.4 ± 3.2 | 41.1 ± 3.3 | 41.2 ± 3.3 | .05 | .90 | .10 | |
| Hemoglobin (g/dl) | 13.0 ± 1.2 | 13.3 ± 1.3 | 13.2 ± 1.4 | 13.3 ± 1.5 | .70 | .45 | .45 | |
Generalized linear mixed‐model analysis. Data presented as mean ± SD.
Abbreviations: BASE, baseline; Cl−, chloride; HSM, high Na+ meal; K+, potassium; LSM, low Na+ meal; Na+, sodium; POST: postprandial.
*
p < .05 versus respective baseline.
†
p < .05 versus LSM; N = 37.