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The effect of glucose dose and fasting interval on cognitive function: a double-blind, placebo-controlled, six-way crossover study.

Owen, Lauren and Scholey, Andrew B. and Finnegan, Yvonne and Hu, Henglong and Sünram-Lea, Sandra-Ilona (2012) The effect of glucose dose and fasting interval on cognitive function: a double-blind, placebo-controlled, six-way crossover study. Psychopharmacology, 220 (3). pp. 577-589. ISSN 0033-3158

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Abstract

RATIONALE: Previous research has identified a number of factors that appear to moderate the behavioural response to glucose administration. These include physiological state, dose, types of cognitive tasks used and level of cognitive demand. Another potential moderating factor is the length of the fasting interval prior to a glucose load. OBJECTIVES: Therefore, we aimed to examine the effect of glucose dose and fasting interval on mood and cognitive function. METHODS: The current study utilised a double-blind, placebo-controlled, balanced, six period crossover design to examine potential interactions between length of fasting interval (2 versus 12 hours) and optimal dose for cognition enhancement. RESULTS: Results demonstrated that the higher dose (60 g) increased working memory performance following an overnight fast, whereas the lower dose (25 g) enhanced working memory performance following a 2-h fast. CONCLUSIONS: The data suggest that optimal glucose dosage may differ under different conditions of depleted blood glucose resources. In addition, glucoregulation was observed to be a moderating factor. However, further research is needed to develop a model of the moderating and mediating factors under which glucose facilitation is best achieved.

Item Type: Article
Journal or Publication Title: Psychopharmacology
Uncontrolled Keywords: Cognition ; Cognitive ; Glucose ; Metabolism
Subjects: B Philosophy. Psychology. Religion > BF Psychology
Departments: Faculty of Science and Technology > Psychology
ID Code: 56194
Deposited By: ep_importer_pure
Deposited On: 26 Jul 2012 12:56
Refereed?: Yes
Published?: Published
Last Modified: 30 Sep 2013 15:23
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/56194

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