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Table 9 Urine pH for the Experimental 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

Experimental Condition Pre-Treatment Period Treatment Period Post-Treatment Period
  M1 M2 M3 M4 M5 M6 M7 M8 M9 M10 M11 M12
All Subjects 6.28 6.20 6.22 6.25 6.51 6.57 7.00 7.00 7.07 6.23 6.17 6.21
(n = 19) (0.11) (0.11) (0.10) (0.10) (0.09) (0.10) (0.12) (0.11) (0.08) (0.07) (0.10) (0.09)
Low PA
(n = 9)
6.34
(0.16)
6.40
(0.18)
6.32
(0.12)
6.32
(0.12)
6.54
(0.13)
6.63
(0.12)
6.88
(0.12)
6.89
(0.13)
6.94
(0.08)
6.34
(0.11)
6.24
(0.17)
6.33
(0.17)
High PA
(n = 10)
6.23
(0.15)
6.02
(0.12)
6.11
(0.14)
6.04
(0.09)
6.48
(0.11)
6.67
(0.13)
7.15
(0.13)
7.12
(0.13)
7.10
(0.13)
6.13
(0.12)
6.11
(0.12)
6.11
(0.12)
Low SRWC
(n = 9)
6.17
(0.09)
6.26
(0.14)
6.33
(0.09)
6.21
(0.10)
6.30
(0.08)
6.29
(0.12)
6.34
(0.11)
6.54
(0.11)
6.60
(0.11)
6.16
(0.11)
6.11
(0.09)
6.09
(0.08)
High SRWC
(n = 10)
5.91
(0.16)
5.96
(0.18)
6.00
(0.16)
6.29
(0.17)
6.57
(0.17)
6.78
(0.11)
7.21
(0.12)
7.14
(0.14)
7.25
(0.08)
6.07
(0.16)
5.88
(0.15)
6.27
(0.12)
Low PRAL
(n = 9)
6.56
(0.15)
6.40
(0.16)
6.46
(0.12)
6.41
(0.13)
6.50
(0.11)
6.50
(0.14)
6.79
(0.20)
6.88
(0.20)
6.89
(0.14)
6.40
(0.10)
6.32
(0.15)
6.37
(0.14)
High PRAL
(n = 10)
6.04
(0.11)
6.02
(0.13)
5.99
(0.15)
6.19
(0.15)
6.63
(0.14)
6.65
(0.14)
7.15
(0.13)
7.18
(0.13)
7.24
(0.07)
6.07
(0.12)
6.04
(0.12)
6.07
(0.08)
  1. Note: There were a total of twelve 24-hour urine collections labeled in the table as M1-M12, respectively.
  2. Mean pH value differed significantly (P < 0.05) from respective mean Pre-Treatment reference value which was an average of all M1-M3 values within the condition and subject group being evaluated. These Pre-Treatment reference values were as follows: 6.23 (all Experimental subjects), 6.35 (low PA), 6.12 (high PA), 6.33 (low SRWC), 5.96 (high SRWC), 6.47 (low PRAL), and 6.02 (high PRAL).