A randomised crossover trial of nitrate and breakfast on prefrontal cognitive and haemodynamic response functions.Show others and affiliations
2024 (English)In: NPJ science of food, ISSN 2396-8370, Vol. 8, no 1, article id 64Article in journal (Refereed) Published
Abstract [en]
It remains unknown whether dietary nitrate and breakfast may enhance working memory (WM) performance by augmenting physiological mechanisms and subjective psychological well-being. We performed a 3-arm randomised within-subject crossover study, with pretest-posttest comparisons, to test whether nitrate consumption via breakfast with a beetroot juice shot or regular breakfast compared to no breakfast improved WM (measured with n-back tests) and cognitive task-related changes in prefrontal cortical haemodynamic response (oxygenated- and deoxygenated-haemoglobin derived from functional near-infrared spectroscopy). In addition, effects on peripheral vascular function and self-reported psychological factors were assessed. In 60 adolescents (13-15 years old; 66% girls), WM improved in all conditions, with no intervention effects. Intervention effects were seen for oxygenated-haemoglobin changes, such that it increased after the breakfast with a nitrate shot during the WM tests and decreased after the regular breakfast. Thus, different neurophysiological mechanisms may be at play to preserve WM in adolescents depending on their breakfast composition. The trial was registered in the ISRCTN registry (ISRCTN16596056) on 21/02/2022.
Place, publisher, year, edition, pages
Nature Publishing Group, 2024. Vol. 8, no 1, article id 64
Keywords [sv]
epabs, e-pabs, hjärnhälsa, brain health
National Category
Nutrition and Dietetics Health Sciences
Research subject
Medicine/Technology; Medicine/Technology
Identifiers
URN: urn:nbn:se:gih:diva-8340DOI: 10.1038/s41538-024-00308-4ISI: 001311988600001PubMedID: 39271707Scopus ID: 2-s2.0-85204146829OAI: oai:DiVA.org:gih-8340DiVA, id: diva2:1901980
Part of project
E-PABS - a centre of Excellence in Physical Activity, healthy Brain functions and Sustainability, Knowledge FoundationPhysical Activity for Healthy Brain Functions in School Youth, Knowledge Foundation, Skandias Stiftelse Idéer för livet
Note
Finansieras av COOP, Skandia, Skanska, IKEA, Generation PEP, Konsumentföreningen i Stockholm.
2024-09-302024-09-302025-02-11