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Table 8 Urine pH for the Control group with daily PA, SRWC, and PRAL subgroup analyses (Mean (SE)).

From: Acid-base balance and hydration status following consumption of mineral-based alkaline bottled water

Control Condition Pre-Treatment Period Treatment Period Post-Treatment Period
  M1 M2 M3 M4 M5 M6 M7 M8 M9 M10 M11 M12
All Subjects 6.01 6.11 6.13 6.13 6.20 6.15 6.01 6.01 6.00 6.08 5.86 6.20
(n = 19) (0.11) (0.09) (0.08) (0.10) (0.11) (0.06) (0.07) (0.07) (0.08) (0.09) (0.08) 0.08)
Low PA (n = 9) 5.95 (0.21) 5.93 (0.11) 6.00 (0.14) 6.07 (0.16) 6.12 (0.17) 6.11 (0.09) 5.86 (0.07) 5.86 (0.07) 5.91 (0.11) 6.02 (0.14) 5.99 (0.12) 6.11 (0.12)
High PA (n = 10) 6.05 (0.11) 6.20 (0.10) 6.24 (0.10) 6.19 (0.13) 6.36 (0.12) 6.19 (0.09) 6.14 (0.12) 6.14 (0.12) 6.05 (0.12) 6.14 (0.12) 6.02 (0.08) 6.28 (0.11)
Low SRWC (n = 9) 6.21 (0.18) 6.28 (0.13) 6.17 (0.17) 6.13 (0.15) 6.17 (0.13) 6.29 (0.14) 5.85 (0.14) 5.85 (0.14) 5.99 (0.12) 6.25 (0.12) 6.16 (0.16) 6.37 (0.14)
High SRWC (n = 10) 6.30 (0.18) 6.15 (0.10) 6.14 (0.09) 6.18 (0.14) 6.31 (0.15) 6.18 (0.14) 6.25 (0.15) 6.25 (0.15) 6.19 (0.13) 6.15 (0.11) 5.94 (0.13) 6.10 (0.11)
Low PRAL (n = 9) 6.06 (0.22) 6.11 (0.16) 6.22 (0.15) 6.22 (0.17) 6.23 (0.17) 6.23 (0.11) 5.92 (0.11) 5.92 (0.11) 5.92 (0.13) 5.98 (0.16) 5.87 (0.15) 6.16 (0.14)
High PRAL (n = 10) 5.96 (0.10) 6.11 (0.09) 6.04 (0.09) 6.06 (0.11) 6.36 (0.36) 6.08 (0.07) 6.08 (0.10) 6.08 (0.10) 6.04 (0.10) 6.18 (0.08) 5.86 (0.09) 6.24 (0.09)
  1. Note: There were a total of twelve 24-hour urine collections labeled in the table as M1-M12, respectively. Mean pH values were compared directly with respective mean Pre-Treatment reference value which were averages of all M1-M3 values within the condition and subject group being evaluated. These Pre-Treatment reference values were as follows: 6.08 (all Control subjects), 5.96 (low PA), 6.16 (high PA), 6.22 (low SRWC), 6.20 (high SRWC), 6.13 (low PRAL), and 6.04 (high PRAL).