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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).