Research Article

Low-Glycemic-Index Foods Can Decrease Systolic and Diastolic Blood Pressure in the Short Term

Table 5

The effects of LGI and HGI foods on SBP and DBP divided by day and night.

CharacteristicsHGI dietLGI diet
BaselineAt the end valueBaselineAt the end value

Day  
(10 am to 9 pm)
SBP (mmHg)111.80 ± 9.57139.1 ± 10.640.26112.86 ± 9.33112.43 ± 9.830.79
DBP (mmHg)74.26 ± 10.0976.50 ± 8.430.1674.46 ± 7.61 74.30 ± 8.990.91
HR (bpm)79.60 ± 12.7777.13 ± 10.130.2881.03 ± 12.7176.63 ± 11.690.007*

Night  
(10 pm to 8 am)
SBP (mmHg)115.9 ± 9.96110.66 ± 9.850.1112.27 ± 10.62102.26 ± 14.18 0.01*
DBP (mmHg)74.10 ± 9.8071.16 ± 9.160.6574.30 ± 8.9966.96 ± 10.39 0.02*
HR (bpm)75.40 ± 17.5371.13 ± 13.230.2381.06 ± 11.8772.23 ± 10.620.001*

; intragroup comparison of baseline and after intervention (after 24 hours). Results were performed by paired -test for normally distributed data and by Wilcoxon test for nonnormally distributed data.