ABSTRACT This study aimed to investigate the acute effects of capacitive and resistive electric transfer (CRet) on Achilles tendon elongation during muscle contraction, as well as the circulation in the peritendinous region. Sixteen healthy men participated in this study. All 16 participants underwent 2 interventions: (1) CRet trial and (2) CRet without power (sham trial). Tendon elongation was measured four times. Using near-infrared spectroscopy, the blood circulation (volume of total-hemoglobin (Hb), oxygenated hemoglobin (oxy-Hb), and deoxygenated hemoglobin (deoxy-Hb)) was measured for 5 min before the intervention and for 30 min after the intervention. The differences between the measurements obtained before and after intervention were compared between the two interventions. The changes in tendon elongation and deoxy-Hb were not significantly different between the interventions. Total- and oxy-Hb were significantly increased in the CRet trial compared with the sham trial. In addition, the increases in total-Hb and oxy-Hb lasted for 30 min after the CRet intervention (CRet vs. sham: oxy-Hb: F = 8.063, p = 0.001, total-Hb: F = 4.564, p = 0.011). In conclusion, CRet significantly improved blood circulation in the peritendinous region.

中文翻译：

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电容和电阻电转移 (CRet) 对跟腱的急性影响

摘要 本研究旨在研究电容和电阻电转移 (CRet) 对肌肉收缩过程中跟腱伸长以及腱周区域循环的急性影响。16 名健康男性参加了这项研究。所有 16 名参与者都接受了 2 项干预：(1) CRet 试验和 (2) CRet without power（假试验）。肌腱伸长率测量四次。使用近红外光谱，测量干预前 5 分钟和干预后 30 分钟的血液循环（总血红蛋白 (Hb)、氧合血红蛋白 (oxy-Hb) 和脱氧血红蛋白 (deoxy-Hb) 的体积）干涉。比较两种干预措施之前和之后获得的测量值之间的差异。肌腱伸长率和脱氧血红蛋白的变化在干预措施之间没有显着差异。与假试验相比，CRet 试验中的总 Hb 和 oxy-Hb 显着增加。此外，CRet 干预后总 Hb 和 oxy-Hb 的增加持续了 30 分钟（CRet vs. sham：oxy-Hb：F = 8.063，p = 0.001，总 Hb：F = 4.564，p = 0.011 ）。总之，CRet 显着改善了腱周区域的血液循环。