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Appl Physiol Nutr Metab. 2019 Mar 7. doi: 10.1139/apnm-2018-0792. [Epub ahead of print]

Effects of Potatoes and Other Carbohydrate-Containing Foods on Cognitive Performance, Glycemic Response, and Satiety in Children.

Author information

1
Ryerson University, School of Nutrition, Faculty of Community Services, Toronto, Ontario, Canada ; j585lee@ryerson.ca.
2
Ryerson University, School of Nutrition, Faculty of Community Services , 350 Victoria Street, KHW-175 , Toronto, Ontario, Canada , M5B 2K3 ; neil.brett@ryerson.ca.
3
Ryerson University, School of Nutrition, Faculty of Community Services, Toronto, Ontario, Canada ; vincent.ch.w@gmail.com.
4
University of Regina Faculty of Kinesiology and Health Studies, 154143, Faculty of Kinesiology and Health Sciences , 3737 Wascana Parkway , Regina, Saskatchewan, Canada , S4S 0A2 ; julia.totosy@uregina.ca.
5
Ryerson University, Department of Psychology, Toronto, Ontario, Canada ; afiocco@ryerson.ca.
6
Ryerson University, School of Nutrition, Faculty of Community Services , 350 Victoria Street , Toronto, Ontario, Canada , M5B 2K3 ; nick.bellissimo@ryerson.ca.

Abstract

Dietary carbohydrates have been shown to influence cognitive performance and satiety in children. However, it remains unclear whether the carbohydrate source is a primary determinant of cognitive performance and satiety. The objective was to compare the effects of white potatoes and other carbohydrate-containing foods on cognitive performance, glycemic response, and satiety in children. On six separate mornings, in random order, children (n=22) consumed 50 g of available carbohydrates from microwaved mashed potatoes (prepared from fresh potatoes then frozen), deep-fried potato strips (French fries), hash browns, white rice, white beans, or skipped a meal. Cognitive performance, glycemic response and satiety were measured over 180 min. Cognitive performance was measured using a battery of tests assessing verbal declarative memory, spatial memory, short-term memory, working memory, and information processing speed. Although cognitive performance after the treatment meals did not differ from meal skipping, children recalled more words after French fries (9.1±0.4 words) compared with mashed potatoes (8.2±0.3 words; p<0.001) and white rice (8.4±0.3 words; p=0.04) on the verbal declarative memory test. Blood glucose concentrations were higher after white rice compared with white beans, mashed potatoes, and hash browns (p<0.05). Change from baseline subjective average appetite (mm/kcal) was lowest after mashed potatoes compared with all other treatment meals (p<0.05). In conclusion, verbal declarative memory was higher after French fries and subjective average appetite was lowest after mashed potatoes. Future longitudinal studies are needed to confirm these short-term findings and to elucidate the mechanism of action.

PMID:
30844296
DOI:
10.1139/apnm-2018-0792

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