Anthropometric indicators as a screening tool for sarcopenia in older adults from Florianópolis, Santa Catarina: EpiFloripa Ageing study
Indicadores antropométricos como instrumentos de triagem para sarcopenia em idosos residentes em Florianópolis, Santa Catarina: estudo EpiFloripa Idoso
Rev. Nutr. (Online); 30 (3), 2017
Publication year: 2017
ABSTRACT Objective This cross-sectional population-based study aimed to determine the cutoff points of anthropometric indicators to screen for sarcopenia and the association between sarcopenia and these indicators. Methods The sample consisted of 601 older adults. Sarcopenia was detected by appendicular skeletal muscle index. The receiver operating characteristic curve identified the cutoff points for body mass index, waist-to-height ratio, waist circumference, and handgrip strength to screen for sarcopenia. Based on the cut-off points, principal component analysis determined which indicators had a better fit as discriminants to compose an indicator. Finally, logistic regression analysis was performed with this indicator as the main independent variable. Results The results showed that all anthropometric indicators and handgrip strength were capable of discriminating sarcopenia; however, body mass index, waist circumference, and waist-to-height ratio were the best discriminants in principal components analysis, composing the new indicator. Adjusted logistic regression analysis showed that sarcopenia was associated with the indicator in both sexes. Conclusion The concomitant presence of low body mass index, low waist circumference, and low waist-to-height ratio may help to discriminate sarcopenia.
RESUMO Objetivo Este estudo transversal, populacional, teve como objetivo determinar pontos de corte de indicadores antro-pométricos e força de preensão manual para triagem de sarcopenia e verificar a associação entre sarcopenia e estes indicadores. Métodos A amostra foi composta por 601 idosos e a sarcopenia foi identificada pelo Ãndice de massa muscular apendicular.