O papel da vitamina D na força muscular em idosos
DOI:
https://doi.org/10.5935/0104-7795.20160019Palavras-chave:
Colecalciferol, Força Muscular, IdosoResumo
A hipovitaminose D é uma condição frequente em idosos e está associada ao risco aumentado de fratura. A deficiência de vitamina D é comum entre indivíduos idosos em localidades de grandes latitudes e muito comum entre os institucionalizados. Atualmente há também evidências de que a baixa concentração vitamina D é associada com vários distúrbios de origem não musculoesquelética, tais como doenças cardiovasculares, inflamação, doenças infecciosas, entre outras. Além disso, estudos clínicos em idosos têm demonstrado que os baixos níveis séricos de vitamina D correlacionam-se com força muscular reduzida em membros inferiores e pior desempenho físico. No entanto, os níveis necessários para manter a função muscular adequada e força ainda não foram estabelecidos. Objetivo: Avaliar as evidências recentes dos efeitos da vitamina D na força muscular de indivíduos idosos. Métodos: Realizou-se levantamento dos estudos publicados no período de 2010 a 2014 nas bases Pubmed, Medline e Scopus, usando os termos “cholecalciferol”, “muscle strength” e “elderly”. Resultados: Sete estudos foram selecionados. Os resultados obtidos sugeriram influência positiva da vitamina D na força muscular de idosos. Conclusão: Esta revisão demonstrou que, apesar da ação da vitamina D no sistema musculoesquelético ainda parecer incerto, houve uma tendência de maior benefício com a suplementação de vitamina D em doses maiores. Entretanto, estudos adicionais são necessários para definição do melhor perfil terapêutico
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