Urinary excretions of calcium were significantly elevated above the baseline values when taking calcium supplement both with meal ( 3.48 + / - 2.13 mmol/day vs. 5.17 + / - 2.61 mmol/day , P < 0.05 ) and at bedtime ( 3.09 + / - 1.70 mmol/day vs. 5.08 + / - 2.34 mmol/day , P < 0.05 ) .
