Physical exercise, IGF-1 and cognition A systematic review of experimental studies in the elderly
ABSTRACT One of hypothetical mechanisms related to cognition is exercise-induced IGF-1. Objective: The aim of this study was to analyze the effects of exercise on IGF-1 levels and cognition in the elderly. Methods: The article searches were conducted on Pubmed, Web of Science, PsycINFO and Scielo databases and reviewed according to PRISMA guidelines. The inclusion criteria were: [1] original articles published up to 2017; [2] samples including elderly; [3] protocols including physical exercise; [4] longitudinal studies having exercise as main outcome; [5] assessment of IGF-1; [6] cognition assessment. Results: Seven studies were included in this review. Three of the studies showed an exercise-induced increase in IGF-1; three found stable IGF-1 levels and one found a reduction in IGF-1; with and without improvement in cognition. Conclusion: Disparities in the type of physical exercise, protocols and samples under different conditions hinder the establishment of a consensus on IGF-1, cognition and physical exercise.
Main Authors: | Stein,Angelica Miki, Silva,Thays Martins Vital, Coelho,Flávia Gomes de Melo, Arantes,Franciel José, Costa,José Luiz Riani, Teodoro,Elizabeth, Santos-Galduróz,Ruth Ferreira |
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Format: | Digital revista |
Language: | English |
Published: |
Academia Brasileira de Neurologia, Departamento de Neurologia Cognitiva e Envelhecimento
2018
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Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1980-57642018000200114 |
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