Does brain creatine content rely on exogenous creatine in healthy youth? A proof-of-principle study
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Citações na Scopus
22
Tipo de produção
article
Data de publicação
2017
Título da Revista
ISSN da Revista
Título do Volume
Editora
CANADIAN SCIENCE PUBLISHING, NRC RESEARCH PRESS
Autores
MEREGE-FILHO, Carlos Alberto Abujabra
OLIVEIRA, Maira Okada de
GONCALVES, Livia de Souza
HAYASHI, Ana Paula Tanaka
ROSCHEL, Hamilton
Citação
APPLIED PHYSIOLOGY NUTRITION AND METABOLISM, v.42, n.2, p.128-134, 2017
Resumo
It has been hypothesized that dietary creatine could influence cognitive performance by increasing brain creatine in developing individuals. This double-blind, randomized, placebo-controlled, proof-of-principle study aimed to investigate the effects of creatine supplementation on cognitive function and brain creatine content in healthy youth. The sample comprised 67 healthy participants aged 10 to 12 years. The participants were given creatine or placebo supplementation for 7 days. At baseline and after the intervention, participants undertook a battery of cognitive tests. In a random subsample of participants, brain creatine content was also assessed in the regions of left dorsolateral prefrontal cortex, left hippocampus, and occipital lobe by proton magnetic resonance spectroscopy (1H-MRS) technique. The scores obtained from verbal learning and executive functions tests did not significantly differ between groups at baseline or after the intervention (all p > 0.05). Creatine content was not significantly different between groups in left dorsolateral prefrontal cortex, left hippocampus, and occipital lobe (all p > 0.05). In conclusion, a 7-day creatine supplementation protocol did not elicit improvements in brain creatine content or cognitive performance in healthy youth, suggesting that this population mainly relies on brain creatine synthesis rather than exogenous creatine intake to maintain brain creatine homeostasis.
Palavras-chave
cerebral metabolism, children, dietary supplement, neuropsychological assessment, nuclear medicine, phosphoryilcreatine
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