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Rev. bras. geriatr. gerontol ; 19(2): 257-264, tab, graf
Article in Portuguese | LILACS | ID: lil-785202

ABSTRACT

Resumo Introdução: Massa e força muscular esquelética são variáveis que contribuem para o diagnóstico de sarcopenia. Objetivo: Avaliar a associação entre força e massa muscular esquelética em idosos hospitalizados. Método: Estudo transversal, realizado em hospital privado na cidade de Salvador-BA. Foram incluídos idosos ≥60 anos, entre o 1o e o 5o dia de internação hospitalar e que estivessem sem sedação e/ou drogas vasoativas. A massa muscular foi obtida por meio de equação antropométrica e a variável força por meio da força de preensão palmar. Fraqueza muscular foi identificada se <20 kgf para mulheres e <30 kgf para homens e a massa muscular reduzida quando o índice de massa muscular foi ≤8,9 kg/m2 para homens e ≤6,37 kg/m2 para mulheres. A correlação de Pearson foi utilizada para avaliar a relação entre massa e força e a acurácia para avaliar a capacidade da massa predizer força. Resultados: Entre os 110 idosos avaliados, houve moderada correlação entre massa e força (R=0,691; p=0,001). Entretanto, a acurácia foi fraca da massa para predizer força muscular (acurácia=0,30; IC 95% = 0,19-0,41; p=0,001). Os idosos com fraqueza eram mais velhos que os sem fraqueza, sem diferença nas outras variáveis. Conclusão: Existe uma relação linear entre massa e força muscular esquelética, porém a massa não prediz força, o que sugere que as duas medidas continuem sendo realizadas de forma independente.


Abstract Introduction: The variables mass and skeletal muscle strength contribute to the diagnosis of sarcopenia. Objective: To evaluate the association between strength and skeletal muscle mass in hospitalized elderly persons. Method: A cross-sectional study was carried out in a private hospital in the city of Salvador in Bahia. The study included individuals ≥60 years during their first and fifth day of hospitalization and who were neither sedated nor had taken vasoactive drugs. Muscle mass was calculated using an anthropometric equation and force was measured through handgrip strength. Muscle weakness was identified as <20 kgf for women and <30 kgf for men, and reduced muscle mass was when the muscle mass index was ≤8.9 kg/m2 for men and ≤6.37 kg/m2 for women. The Pearson correlation was used to evaluate the relationship between mass and strength and the accuracy of using mass to predict strength. Results: In 110 patients included, there was a moderate correlation between mass and strength (R=0.691; p=0.001). However, the accuracy of using mass to predict muscle strength was low (accuracy=0.30; CI 95% = 0.19-0.41; p=0.001). The elderly patients with muscle weakness were older than those without muscle weakness, with no differences between the other variables. Conclusion: There is a linear relation between skeletal muscle mass and strength, but mass did not predict strength, which suggests that the two measures continue to perform independently.

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