Author(s): Honorato, Renêe de Caldas ; Ferraz, Alex Soares Marreiros ; Kassiano, Witalo ; Carvalho, Denise Pires ; Ceccatto, Vânia Marilande
Date: 2021
Origin: Oasisbr
Subject(s): Bioelectrical impedance spectroscopy; Posterior thigh; Phase angle; Resistance; Muscle
Several techniques are available to assess muscle tissue status, including electrical impedance myography (EIM). Despite being used in the assessment of neuromuscular status in injury and response to exercise, reliability data for hamstrings muscles are limited. Therefore, this study aimed to determine the test-retest reliability of EIM components on hamstrings. Twenty-one healthy males (25.3 ±3.4 years; 173 ±6.7 cm; and 79.7 ±15.9 kg) volunteered for this study. Subjects completed two visits, separated by seven days to collect EIM components (resistance, reactance, impedance, and phase angle) in the longitudinal and transversal axis of hamstrings in both thighs, using a bioimpedance device and Ag/AgCL adhesive contact electrodes. The electrode arrangement was in the muscular belly, half the distance between origin and insertion of the hamstrings. Reliability was deter-mined by the intraclass correlation coefficient (ICC), minimal detectable change (MDC), and Bland-Altman plots. We observed high to excellent reliability (ICC >0.85) between all EIM components, except for reactance with MDC ranged from 2.0 to 10.8 and the mean bias in Bland-Altman plots ranged from
