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 determined 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 -0.02 to 2.48 (95% limits of agreement from -9.98 to 11.20). From our findings, the hamstrings assessment using EIM technique is reliable to assess muscle tissue; therefore, it enables the evaluation of changes/adaptations in clinical and applied contexts.

有几种技术可用于评估肌肉组织状态，包括电阻抗肌电图（EIM）。尽管已用于评估损伤和运动响应中的神经肌肉状态，但绳肌的可靠性数据仍然有限。因此，本研究旨在确定腿筋上EIM组件的重测可靠性。21名健康男性（25.3±3.4岁； 173±6.7 cm；和79.7±15.9 kg）自愿参加这项研究。受试者完成了两次访问，相隔7天，使用生物阻抗设备和Ag / AgCL粘合剂接触电极在大腿的绳肌的纵轴和横轴上收集EIM成分（电阻，电抗，阻抗和相角）。电极排列在肌肉发达的腹部，腿筋的起点和插入之间的距离的一半。可靠性由组内相关系数（ICC），最小可检测变化（MDC）和Bland-Altman图确定。我们观察到所有EIM组件之间都具有极高的可靠性（ICC> 0.85），与MDC的电抗范围为2.0至10.8，Bland-Altman图的平均偏差范围为-0.02至2.48（协议的95％范围为-9.98）至11.20）。根据我们的发现，使用EIM技术进行的绳肌评估对于评估肌肉组织是可靠的；因此，它可以评估临床和应用环境中的变化/适应性。85）在所有EIM组件之间，但与MDC的电抗范围为2.0至10.8，Bland-Altman图的平均偏差范围为-0.02至2.48（95％的协议限制范围为-9.98至11.20）。根据我们的发现，使用EIM技术进行的绳肌评估对评估肌肉组织是可靠的；因此，它可以评估临床和应用环境中的变化/适应性。85）在所有EIM组件之间，但与MDC的电抗范围为2.0至10.8，Bland-Altman图的平均偏差范围为-0.02至2.48（协议的95％范围为-9.98至11.20）。根据我们的发现，使用EIM技术进行的绳肌评估对评估肌肉组织是可靠的；因此，它可以评估临床和应用环境中的变化/适应性。