--- _id: '28879' abstract: - lang: eng text: |- Abstract Purpose Studies about effects of lunch dietary Glycemic Index (GI) on cognition of schoolchildren are scarce. Our previous CogniDo GI study found no changes of cognition in the early postprandial phase after consumption of two rice types with medium vs. high dietary GI for lunch (i.e., 45 min after starting lunch). This study investigated whether the dietary GI of lunch has an impact on cognition of schoolchildren in the late postprandial phase, 90 min after lunch. Methods A randomized, 2 × 2 crossover intervention study was conducted at a comprehensive school with 5th and 6th grade students. Participants (n = 212) were randomly assigned to either sequence 1 or 2. In the first period, participants of sequence 1 received a dish with high GI rice (GI: 79), those of sequence 2 with medium GI rice (GI: 64)—in the second period, 1 week later, vice versa. Computer-based cognitive testing was performed 90 min after lunch examining tonic alertness, visual search and task switching, and working memory. Treatment effects and treatment effects adjusted for estimated lunch glycemic load (GL) were analyzed using a linear mixed model. Results The selected cognitive parameters were not affected by the GI of lunch 90 min after lunch, neither after intention-to-treat nor in the per-protocol analysis. Adjustment for GL also did not change results. Conclusion The present study revealed no notable differences after the consumption of two rice types with medium vs. high dietary GI for lunch in children’s cognitive function in the late postprandial phase, 90 min after lunch. Clinical trial registration German Clinical Trials Register (DRKS00013597); date of registration: 16/04/2018, retrospectively registered. author: - first_name: Alina full_name: Drozdowska, Alina last_name: Drozdowska - first_name: Kathrin full_name: Sinningen, Kathrin last_name: Sinningen - first_name: Michael full_name: Falkenstein, Michael last_name: Falkenstein - first_name: Henrik full_name: Rudolf, Henrik last_name: Rudolf - first_name: Lars full_name: Libuda, Lars last_name: Libuda - first_name: Anette E. full_name: Buyken, Anette E. last_name: Buyken - first_name: Thomas full_name: Lücke, Thomas last_name: Lücke - first_name: Mathilde full_name: Kersting, Mathilde last_name: Kersting citation: ama: 'Drozdowska A, Sinningen K, Falkenstein M, et al. Impact of lunch with carbohydrates differing in glycemic index on children’s cognitive functioning in the late postprandial phase: a randomized crossover study. European Journal of Nutrition. Published online 2021. doi:10.1007/s00394-021-02766-y' apa: 'Drozdowska, A., Sinningen, K., Falkenstein, M., Rudolf, H., Libuda, L., Buyken, A. E., Lücke, T., & Kersting, M. (2021). Impact of lunch with carbohydrates differing in glycemic index on children’s cognitive functioning in the late postprandial phase: a randomized crossover study. European Journal of Nutrition. https://doi.org/10.1007/s00394-021-02766-y' bibtex: '@article{Drozdowska_Sinningen_Falkenstein_Rudolf_Libuda_Buyken_Lücke_Kersting_2021, title={Impact of lunch with carbohydrates differing in glycemic index on children’s cognitive functioning in the late postprandial phase: a randomized crossover study}, DOI={10.1007/s00394-021-02766-y}, journal={European Journal of Nutrition}, author={Drozdowska, Alina and Sinningen, Kathrin and Falkenstein, Michael and Rudolf, Henrik and Libuda, Lars and Buyken, Anette E. and Lücke, Thomas and Kersting, Mathilde}, year={2021} }' chicago: 'Drozdowska, Alina, Kathrin Sinningen, Michael Falkenstein, Henrik Rudolf, Lars Libuda, Anette E. Buyken, Thomas Lücke, and Mathilde Kersting. “Impact of Lunch with Carbohydrates Differing in Glycemic Index on Children’s Cognitive Functioning in the Late Postprandial Phase: A Randomized Crossover Study.” European Journal of Nutrition, 2021. https://doi.org/10.1007/s00394-021-02766-y.' ieee: 'A. Drozdowska et al., “Impact of lunch with carbohydrates differing in glycemic index on children’s cognitive functioning in the late postprandial phase: a randomized crossover study,” European Journal of Nutrition, 2021, doi: 10.1007/s00394-021-02766-y.' mla: 'Drozdowska, Alina, et al. “Impact of Lunch with Carbohydrates Differing in Glycemic Index on Children’s Cognitive Functioning in the Late Postprandial Phase: A Randomized Crossover Study.” European Journal of Nutrition, 2021, doi:10.1007/s00394-021-02766-y.' short: A. Drozdowska, K. Sinningen, M. Falkenstein, H. Rudolf, L. Libuda, A.E. Buyken, T. Lücke, M. Kersting, European Journal of Nutrition (2021). date_created: 2021-12-15T08:48:58Z date_updated: 2022-01-06T06:58:39Z department: - _id: '35' doi: 10.1007/s00394-021-02766-y language: - iso: eng publication: European Journal of Nutrition publication_identifier: issn: - 1436-6207 - 1436-6215 publication_status: published status: public title: 'Impact of lunch with carbohydrates differing in glycemic index on children''s cognitive functioning in the late postprandial phase: a randomized crossover study' type: journal_article user_id: '88682' year: '2021' ...