Figure 1. Effects of daily oral Mg supplementation on
urinary Mg excretion (top panel) and on serum levels of
total Mg (middle panel) and ionized Mg2+
(bottom level). The closed triangles are
the Mg-supplemented subjects, and the closed circles are
the control subjects matched in age, weight, and height. The results
are shown as the mean ± SEM (n = 12). By two-way
ANOVA: a, for urinary Mg excretion, time effect: P
< 0.001; group effect: P < 0.001; and time
x group interaction: P = 0.003; b, for total Mg,
P = NS for both time and group effects and also for
the time x group interaction; c, for iMg2+, time
effect: P = NS; group effect: P
= 0.002; and time x group interaction: P =
NS. *, P < 0.05 **, P < 0.01, ***,
P < 0.001 (pairwise comparison by Fisher’s LSD
post-hoc analysis).
