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Table 3 Blood pressure among subjects with an initial magnesium level in urine less than 0.40 mmol/L before and after intervention with different waters. * denotes group with initial systolic values below 170 mm (see text).

From: Mineral water intake reduces blood pressure among subjects with low urinary magnesium and calcium levels

Water n Before 2 weeks 4 weeks
Systolic     
A 18 151.9 (9.8) 154.2 (15.9) 148.3 (12.4)
B 18 148.3 (10.5) 146.8 (13.6) 147.9 (11.5)
C 19 156.8 (15.9) 150.1(16.1)p = 0.034 150.4(15.5)p = 0.017
C* 13 148.8 (13.3) 142.5(10.1)p = 0.028 144.3(14.4)p = 0.047
Diastolic     
A 18 90.1 (4.4) 91.2 (6.1) 89.8 (5.0)
B 18 90.4 (4.2) 89.3 (6.0) 90.9 (6.6)
C 19 91.7 (6.3) 88.0 (7.6) p = 0.014 89.1 (8.0) p = 0.020
C* 13 91.3 (6.4) 87.3 (6.3) p = 0.004 88.1 (8.6) p = 0.012