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Performance and sleepiness during a 24 h wake in constant conditions are affected by diet
Stockholm University, Stress Research Institute, IPM - National Institute of Psychosocial Medicine, Karolinska Institutet.
Department of Public Health and Caring Sciences, Clinical Nutrition and Metabolism, Uppsala University, Department of Medical Sciences, Nutrition, Uppsala University Hospital.
National Institute for Psychosocial Factors and Health, Karolinska Institutet, Avdelningen för stressforskning, Karolinska institutet.
Department of Medical Sciences, Nutrition, Uppsala University Hospital.
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2004 (English)In: Biological Psychology, ISSN 0301-0511, E-ISSN 1873-6246, p. 251-263Article in journal (Refereed) Published
Abstract [en]

This study investigated the effects of high-carbohydrate (HC) and high-fat (HF) diet on cognitive performance, and subjective and objective sleepiness. Seven male participants were kept awake for 24h in a metabolic ward. Meals were given every 4h and cognitive performance and sleepiness ratings were assessed hourly. The Karolinska Drowsiness Test (KDT, EEG derived) was performed twice after meal. Performance in simple reaction time showed a significant interaction of diet and the post-prandial period, a slower reaction time was observed for the HC-diet 3.5h after meal intake. Diet did not affect EEG measures but a general post-prandial increase of objective sleepiness was observed 3.5h after meal servings. The HC-diet was significantly associated with an increase of subjective sleepiness. The study demonstrated that the HC-diet caused larger oscillation in performance and increased sleepiness as compared to HF-diet throughout day and night.

Place, publisher, year, edition, pages
2004. p. 251-263
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Other Health Sciences
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Health Science
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URN: urn:nbn:se:ltu:diva-12662DOI: 10.1016/S0301-0511(03)00114-5Local ID: bd43a528-2f60-4842-b2e6-0ff55d00253cOAI: oai:DiVA.org:ltu-12662DiVA, id: diva2:985613
Note
Upprättat; 2004; 20151126 (andbra)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

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Wiklund, Maria Lennernäs

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