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Table 5 Serum electrolytes over the study period for spring water and magnesium bicarbonate (supplemented) spring water groups

From: A double-blind, placebo-controlled study of the short term effects of a spring water supplemented with magnesium bicarbonate on acid/base balance, bone metabolism and cardiovascular risk factors in postmenopausal women

   Spring Water (n = 33) Supplemented Spring Water (n = 34)
  Visit Day 0 Day 84 Day 0 Day 84
Bicarbonate (mmol/L) Mean (SD) 27.6 (1.84) 27.6 (1.60) 27.9 (1.94) 27.8 (1.93)
  Change from baseline (Day 0) (SD)   0.0 (2.01)   -0.1 (1.60)
  *P value    0.511 0.790
Corrected Calcium (mmol/L) Mean (SD) 2.31(0.07) 2.29 (0.09) 2.32 (0.08) 2.31 (0.091)
  Change from baseline (Day 0) (SD)   -0.03 (0.07)   -0.004 (0.06)
  *P value    0.778 0.1504
Magnesium (mmol/L) Mean (SD) 0.86 (0.06) 0.86 (0.06) 0.87 (0.05) 0.90 (0.052)
  Change from baseline (Day 0) (SD)   0.006 (0.04)   0.03 (0.03)
  *P value    0.320 0.006
  1. *p-value comparing groups at Day 0 (italics) and for change from Day 0 to Day 84