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. 2012 Dec 21;5(1):1-9.
doi: 10.3390/nu5010001.

Timing of peak blood glucose after breakfast meals of different glycemic index in women with gestational diabetes

Jimmy Chun Yu Louie  1 , Tania P Markovic, Glynis P Ross, Deborah Foote, Jennie C Brand-Miller
Affiliations

Timing of peak blood glucose after breakfast meals of different glycemic index in women with gestational diabetes

Jimmy Chun Yu Louie et al. Nutrients. .

Abstract

This study aims to determine the peak timing of postprandial blood glucose level (PBGL) of two breakfasts with different glycemic index (GI) in gestational diabetes mellitus (GDM). Ten women with diet-controlled GDM who were between 30 and 32 weeks of gestation were enrolled in the study. They consumed two carbohydrate controlled, macronutrient matched bread-based breakfasts with different GI (low vs. high) on two separate occasions in a random order after an overnight fast. PBGLs were assessed using a portable blood analyser. Subjects were asked to indicate their satiety rating at each blood sample collection. Overall the consumption of a high GI breakfast resulted in a greater rise in PBGL (mean ± SEM peak PBGL: low GI 6.7 ± 0.3 mmol/L vs. high GI 8.6 ± 0.3 mmol/L; p < 0.001) and an earlier peak PBGL time (16.9 ± 4.9 min earlier; p = 0.015), with high variability in PBGL time between subjects. There was no significant difference in subjective satiety throughout the test period. In conclusion, the low GI breakfast produced lower postprandial glycemia, and the peak PBGL occurred closer to the time recommended for PBGL monitoring (i.e., 1 h postprandial) in GDM than a macronutrient matched high GI breakfast.

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Figures

Figure 1
Figure 1
Mean ± SEM postprandial blood glucose level of the 10 subjects. NS: non-significant.
Figure 2
Figure 2
Postprandial glycemic responses of the subjects after the consumption of a low or high glycemic index breakfast. Peak blood glucose levels were circled. Subjects #2 and #8 withdrew after the first test session and hence their individual data were not presented.
Figure 3
Figure 3
Subjective satiety after a low or high GI breakfast. NS: non-significant.
See this image and copyright information in PMC

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