Several studies have not shown maternal glucose administration  to have a statistically significant effect on the time to reactivity or the incidence of reactive nonstress tests [1-4]. However, one study showed that breathing movements may be increased following maternal glucose administration [5]. Some studies suggest that the percentage of false nonreactive nonstress tests results may be reduced by performing the test in the sitting or lateral decubitus position, or after walking [6,7].

REFERENCES
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2. Druzin ML, Foodim J.Effect of maternal glucose ingestion compared with maternal water ingestion on the nonstress test.Obstet Gynecol. 1986 Mar;67(3):425-6.PMID:3511421
3.Richardson B, et al.,The effect of maternal glucose administration on the specificity of the nonstress test. Am J Obstet Gynecol. 1983 Jan 15;145(2):141-6.PMID:6849350
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