Localized Bicep Tissue Bioimpedance Alterations Following Eccentric Exercise in Healthy Young Adults
Localized Bicep Tissue Bioimpedance Alterations Following Eccentric Exercise in Healthy Young Adults
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DOI：
10.1109/access.2020.2970314
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发表时间：
2020-01-01
期刊：
影响因子：
3.9
通讯作者：
Fu, Bo
中科院分区：
文献类型：
--
作者：
Freeborn, Todd J.;Regard, Gabriella;Fu, Bo
目的：局部二头肌组织的生物阻抗测量参与者完成偏心运动协议与一个手臂和没有运动与其他手臂，比较发生的变化，作为一个结果的运动协议在96小时的观察期。研究方法：在完成手肘屈肌离心运动方案后的前、后、24 h、48 h、72 h和96 h时间点，收集6名志愿者的局部二头肌生物阻抗、二头肌周长和二头肌疼痛的自我报告。结果如下：未锻炼的二头肌在任何时间点的所有阻抗测量值和周长的运动前和运动后测量值之间均无统计学显著差异。与方案前测量值相比，在方案后72小时和96小时时间点，锻炼的二头肌显示10 kHz、50 kHz和100 kHz阻抗（电阻和电抗）的统计学显著降低（p < 0.01）和二头肌周长的增加。与基线报告相比，锻炼二头肌的疼痛自我报告在48小时和72小时时间点也显示出统计学显著增加（p < 0.01）。结论：偏心方案的完成导致二头肌周长增加，局部组织生物阻抗的电阻和电抗分量的幅度降低;肿胀和阻抗的最大变化发生在相同的方案后时间点。这些变化支持局部组织生物阻抗对运动方案导致的变化敏感，并有可能量化运动诱导变化的组织。重要性：局部组织生物阻抗对离心运动引起的变化敏感，可能是一种潜在的无创量化组织因运动、疲劳、损伤和恢复引起的变化的方法。
Objective: The localized bicep tissue bioimpedance was measured from participants who completed an eccentric exercise protocol with one arm and no exercise with the other arm to compare changes that occur as a result of the exercise protocol over a 96h observation period. Methods: The localized bicep bioimpedance, bicep circumference, and self-reports of bicep pain were collected from 6 volunteers at pre, post, 24h, 48h, 72h, and 96h timepoints after completing an eccentric exercise protocol of the elbow flexor muscles. Results: The unexercised bicep showed no statistically significant differences between the pre-exercise and post-exercise measures at any timepoints for all impedance measures and circumference. The exercised bicep showed statistically significiant decreases (p < 0.01) for 10 kHz, 50 kHz, and 100 kHz impedance (resistance and reactance) and increases of bicep circumference at the 72h and 96h post-protocol timepoints, compared to the pre-protocol measurements. The self-reports of pain of the exercised bicep also showed statistically significant increases (p < 0.01) at the 48h and 72h timepoints compared to the baseline reports. Conclusion: Completion of the eccentric protocol resulted in increases of bicep circumference and decreases in the magnitude of resistance and reactance components of the localized tissue bioimpedance; with maximum changes of swelling and impedance occurring at the same post-protocol timepoints. These changes support that localized tissue bioimpedance is sensitive to the changes that occur as a result of the exercise protocol with the potential to quantify tissues for exercise induced changes. Significance: Localized tissue bioimpedance is sensitive to the changes that occur from eccentric exercise and may be a potential method to non-invasively quantify tissues for changes due to exercise, fatigue, injury, and recovery.