Phase angle as a screening method for sarcopenia in community-dwelling older adults

• Autor(a) principal: SANTIAGO, Lidiane Barbosa
• Data de Publicação: 2023
• Outros Autores: RORIZ, Anna Karla Carneiro, OLIVEIRA, Carolina Cunha de, OLIVEIRA, Tatiane Melo de, CONCEIÇÃO-MACHADO, Maria Ester Pereira da, RAMOS, Lilian Barbosa
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Revista de Nutrição
• Texto Completo: https://periodicos.puc-campinas.edu.br/nutricao/article/view/8985
• topic: Aged; Electric Impedance; Sarcopenia; Idoso; Impedância Elétrica; Sarcopenia

   Objective We investigated the utility of the phase angle as a screening tool for sarcopenia. Methods We performed a cross-sectional study that included 169 active community-dwelling elderly women. The phase angle was determined using tetrapolar bioelectrical impedance, and sarcopenia was diagnosed based on skeletal muscle mass, muscle strength, and physical performance using bioelectrical impedance analysis, a handheld dynamometer, and the gait speed test, respectively. Receiver operating characteristic curve analysis was performed to investigate the role of the phase angle as a predictor of sarcopenia. Results The prevalence of sarcopenia was 12.4%. The median phase angle was 5.30°; elderly women with sarcopenia had lower phase angles than those without sarcopenia (p=0.006). The phase angle cutoff for the detection of sarcopenia was ≤5.15°, with an area under the curve of 0.685, sensitivity 81.0%, specificity 60.8%, and accuracy 63.31%. Elderly women with a low phase angle show a high risk of presenting with reduced muscle mass. Conclusion The phase angle was shown to be a useful screening tool in elderly women with sarcopenia.