Phase angle as a screening method for sarcopenia in community-dwelling older adults/Ângulo de fase como método de triagem para sarcopenia em idosas ativas de comunidade

We investigated the utility of the phase angle as a screening tool for sarcopenia. 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. The prevalence of sarcopenia was 12.4%. The median phase angle was 5.30[grados]; 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