Test-retest reliability of electrical impedance myography in hamstrings of healthy young men

Several techniques are available to assess muscle tissue status, including electrical impedance myography (EIM). Despite being used in the assessment of neuromuscular status injury and response exercise, reliability data for hamstrings muscles limited. Therefore, this study aimed determine test-retest EIM components on hamstrings. Twenty-one healthy males (25.3 ± 3.4 years; 173 6.7 cm; 79.7 15.9 kg) volunteered study. Subjects completed two visits, separated by seven days collect (resistance, reactance, impedance, phase angle) longitudinal transversal axis both thighs, using a bioimpedance device Ag/AgCL adhesive contact electrodes. The electrode arrangement was muscular belly, half distance between origin insertion Reliability determined intraclass correlation coefficient (ICC), minimal detectable change (MDC), Bland-Altman plots. We observed high excellent (ICC > 0.85) all components, except reactance with MDC ranged from 2.0 10.8 mean bias plots ?0.02 2.48 (95% limits agreement ?9.98 11.20). From our findings, technique is reliable tissue; therefore, it enables evaluation changes/adaptations clinical applied contexts.