Istanbul Physical Therapy Rehabilitation Training and Research Hospital, Istanbul, Turkey.
Istanbul Gelisim University, Faculty of Engineering, Avcilar, Istanbul, Turkey.
J Electromyogr Kinesiol. 2023 Jun;70:102768. doi: 10.1016/j.jelekin.2023.102768. Epub 2023 Mar 20.
Finding the reflex circuitry responsible for high-frequency vibration-induced muscle contraction takes work. The main challenge is to determine the effective stimulus time (EST) point at which continuous (sinusoidal) stimulation (i.e., vibration) triggers the reflex response. A novel "cumulated averaging method" has been previously proposed for estimating the EST point. In the current study, we aimed to test the reliability of the cumulated average method. We used five different whole-body vibration (WBV) frequencies in two experiments. The consistency between the EST points estimated from the first and second experiments was analysed with the intraclass correlation (ICC) and technical error of measurement (TEM). The ICC coefficient with 95% CI for the EST point estimation was 0.988 (0.950-0.997). The relative TEM was 1.3%. We concluded that the cumulated average method is highly reliable in estimating the effective stimulus time point for high-frequency continuous sinusoidal signals.
确定负责高频振动诱导肌肉收缩的反射回路需要付出努力。主要挑战是确定有效刺激时间 (EST) 点，在此时间点，连续（正弦）刺激（即振动）引发反射反应。先前已经提出了一种新的“累积平均方法”来估计 EST 点。在本研究中，我们旨在测试累积平均方法的可靠性。我们在两个实验中使用了五种不同的全身振动 (WBV) 频率。使用组内相关系数 (ICC) 和测量技术误差 (TEM) 分析了从第一个和第二个实验中估计的 EST 点之间的一致性。EST 点估计的 ICC 系数为 0.988（0.950-0.997）。相对 TEM 为 1.3%。我们得出结论，累积平均方法在估计高频连续正弦信号的有效刺激时间点方面具有高度可靠性。
