Table 3

Adjusted means of blood pressure and pulse according to the tertiles of dietary seaweed intake^a

Tertiles of seaweed intake^b

P-value

Liner trend P

low

middle

high

Boys (n = 223)

75

74

74

Median (range)

0.06 (0,0.15)

0.36 (0.16,0.68)

1.11 (0.71,3.11)

SBP (mmHg)^c

100.0

(97.1-103.0)

97.9

(94.9-100.8)

98.1

(95.1-101.0)

0.52

0.31

DBP (mmHg)^c

62.8

(60.2-65.3)

59.3

(56.7-61.8)

59.6

(57.1-62.2)

0.11

0.038

Pulse (/min)^c

93.4

(90.0-96.8)

94.2

(90.8-97.7)

93.3

(89.8-96.7)

0.91

0.89

Girls (n = 194)

65

65

64

Median (range)

0.07 (0,0.22)

0.44 (0.22,0.76)

1.30 (0.77,7.98)

SBP (mmHg)^c

102.4

(99.4-105.4)

99.2

(96.2-102.2)

96.9

(93.9-99.9)

0.037

0.030

DBP (mmHg)^c

65.1

(62.2-67.9)

60.4

(57.5-63.3)

61.2

(58.4-64.1)

0.055

0.25

Pulse (/min)^c

98.8

(95.6-102.1)

96.3

(93.1-99.6)

94.2

(90.9-97.5)

0.15

0.092

SBP, systolic blood pressure; DBP, diastolic blood pressure

^aAdjustments for age and BMI.

^bSeaweed intake was controlled for total energy intake by the nutrient density method.

^cEstimated mean and 95% confidence interval

Wada et al. Nutrition Journal 2011 10:83   doi:10.1186/1475-2891-10-83