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Abstract
This randomized crossover study investigated the short-term effects of lunch dietary glycemic index (GI) on children's cognitive function. 189 fifth and sixth graders consumed either high-GI or medium-GI rice at lunch on two separate days. Cognitive tests (tonic alertness, task switching, working memory updating) were administered 45 minutes post-lunch. No significant effects of lunch dietary GI on cognitive parameters were found overall. However, analyzing only data from the first period due to carryover effects revealed faster reaction times in the working memory updating task and fewer commission errors in the alertness task in the high-GI group. These findings require further verification.
Publisher
The Author(s) 2020, corrected publication 2021
Published On
Mar 12, 2020
Authors
Kathrin Jansen, Jana Tempes, Alina Drozdowska, Maike Gutmann, Michael Falkenstein, Anette E. Buyken, Lars Libuda, Henrik Rudolf, Thomas Lücke, Mathilde Kersting
Tags
glycemic index
cognitive function
children
high-GI
medium-GI
diet
randomized crossover study

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