Carboidrato vs placebo

resposta de BOLD fMRI durante diferentes intensidades de imaginação motora

Autores

  • Gabriela Kaiser Fullin Castanho Nutritionist, PhD student, Faculty of Physical Education, University of Campinas (UNICAMP). Campinas-SP, Brazil.
  • Eduardo Bodnariuc Fontes Physical Educator, Pos doctoral, Faculty of Medical Sciences, UNICAMP. Campinas-SP, Brazil.
  • Heli Mamoru Yoshida Physical Educator, MSc student, Faculty of Physical Education, University of Campinas (UNICAMP). Campinas-SP, Brazil.
  • Brunno Machado de Campos Physicist, PhD student, Faculty of Medical Sciences, University of Campinas (UNICAMP). Campinas-SP, Brazil.
  • Elvis Lira da Silva Physicist, Adjunct Professor, Federal University of Mato Grosso. Campinas- -SP, Brazil.
  • Simone Appenzeller Reumatologist, Professor of Faculty of Medical Sciences, University of Campinas (UNICAMP). Campinas-SP, Brazil.
  • Paula Teixeira Fernandes Psychologist, Professor of Faculty of Physical Education, University of Campinas (UNICAMP). Campinas-SP, Brazil.

DOI:

https://doi.org/10.34024/rnc.2015.v23.8004

Palavras-chave:

Metabolismo de Carboidrato, Exercício, Imaginação, Ressonância Magnética, Cérebro

Resumo

Objetivo. O objetivo deste estudo foi verificar os efeitos da inges­tão de CHO na ativação cerebral durante diferentes intensidades de Imginação Motora (IM). Método. Nove indivíduos (oito homens, 28±4,6 anos) participaram deste estudo e foram submetidos a para­digma de Ressonância Magnética funcional baseado em blocos de IM (corrida, com percepção subjetiva de esforço definida como “leve” e “intensa”) intercalado por momentos de repouso. Duas aquisições fo­ram realizadas, sendo que a solução (CHO ou placebo) era ingerida entre elas. O pré-processamento da imagem e a análise estatística fo­ram realizados com o software SPM8 (p<0,001 não corrigido) para comparar alterações no padrão da atividade cerebral quanto às inten­sidades e à ingestão das substâncias. Resultados. Na intensidade leve, ambas as substâncias ativaram de forma semelhante áreas do córtex do cíngulo posterior e anterior, córtex temporal e fusiforme. Em alta intensidade, ambas as substâncias ativaram o córtex frontal, o caudado e o giro para-hipocampal, tálamo, ínsula e córtex do cíngulo poste­rior. Conclusões. Na intensidade leve, o CHO promoveu semelhante ativação cerebral quando comparado ao placebo, no entanto, com a intensidade “intensa”, foram identificadas outras áreas envolvidas na emoção e regulação homeostática.

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Publicado

2015-09-30

Como Citar

Castanho, G. K. F., Fontes, E. B., Yoshida, H. M., Campos, B. M. de, Silva, E. L. da, Appenzeller, S., & Fernandes, P. T. (2015). Carboidrato vs placebo: resposta de BOLD fMRI durante diferentes intensidades de imaginação motora. Revista Neurociências, 23(3), 390–396. https://doi.org/10.34024/rnc.2015.v23.8004

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