Table 3

Systolic blood pressure, diastolic blood pressure and pulse pressure of subjects during the active and passive periods in the 24-h following ingestion of beetroot juice and placebo juice1
Mean value over 24-h1
All subjects (n=30) Male (n=15) Female (n=15)
Measurement Placebo Beetroot Placebo Beetroot Placebo Beetroot
Active period (awake)
 SBP (mmHg) 128.3 ± 1.9 126.6 ± 1.5 129.6 ± 3.1 128.7 ± 2.3 127.0 ± 2.3 124.6 ± 1.8
 DBP (mmHg) 77.8 ± 1.7 77.6 ± 1.3 77.1 ± 2.5 77.5 ± 2.0 78.4 ± 2.3 77.9 ± 1.8
 Pulse pressure (mmHg)2 50.6 ± 1.3a 49.1 ± 1.3b 52.5 ± 2.1 51.2 ± 2.0 48.7 ± 1.6 46.9 ± 1.4
Passive period (asleep)
 SBP (mmHg) 111.0 ± 2.2 113.3 ± 2.0 111.6 ± 2.6 117.0 ± 2.9 110.5 ± 3.5 109.5 ± 2.4
 DBP (mmHg) 62.8 ± 1.3 65.4 ± 1.3 62.1 ± 2.1 65.9 ± 1.9 63.5 ± 1.6 65.0 ± 1.8
 Pulse pressure (mmHg)2 48.2 ± 1.5 47.8 ± 1.4 49.5 ± 1.8 51.2 ± 1.9 47.0 ± 2.4 44.5 ± 1.5

1 Values are means ± SEM. Values with different superscript letters indicate that differences between beetroot juice and placebo are significant, P < 0.05.

2 Pulse pressure refers to SBP minus DBP.

DBP, diastolic blood pressure; SBP, systolic blood pressure.

Coles and Clifton

Coles and Clifton Nutrition Journal 2012 11:106   doi:10.1186/1475-2891-11-106

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