Figure 3.

Urine and plasma responses during interventions among 28 participants. (a) 24-h urinary potassium, (b) 24-h urinary sodium, (c) plasma potassium level. The nonaxial horizontal dashed lines in (a) denote the target values of 24-h urinary potassium in the placebo (60 mmol) and active (132 mmol) phases; the nonaxial horizontal dashed line in (b) denotes the target value of 24-h urinary sodium (200 mmol) during interventions; the gray lines in (a) and (b) connect the values in each phase from the same participants. P values were based on paired Wilcoxon test. K⁺, potassium; Na⁺, sodium.