Guirro Rinaldo Roberto de Jesus, Bigaton Delaine Rodrigues, Silvério Kelly Cristina Alves, Berni Kelly Cristina dos Santos, Distéfano Giovanna, Santos Fernanda Lopes dos, Forti Fabiana
Faculdade de Odontologia de Piracicaba, Universidade Estadual de Campinas, Brasil.
Pro Fono. 2008 Jul-Sep;20(3):189-95. doi: 10.1590/s0104-56872008000300009.
studies indicate correlation between dysphonia and muscle tension.
to evaluate bilaterally the electrical activity of the suprahyoid muscles (SH), sternocleidomastoid (SCM), and trapezius (T), the presence of pain and the voice, after applying transcutaneous electrical nerve stimulation (TENS).
ten (10) women with nodules or bilateral mucus thickening, and phonation fissure. Volunteers were submitted to 10 TENS sessions (200 micros and 10 Hz) for 30 minutes. Pain was evaluated using an analogical visual scale; the voice was evaluated through laryngoscopy and through a perceptive-auditory and acoustic analysis; and the myoelectric signal was converted using the Root Media Square (RMS). Voice and EMG data gathering was performed during the production of the E/vowel and during spontaneous speech (SS).
Shapiro-Wilk Test followed by the Wilcoxon Test, or t Student, or Friedman Test (p < 0.05).
It was observed that the TENS decreased the RMS readings, pre and pos treatment, for the Right T (RT) (2.80 +/- 1.36 to 1.77 +/- 0.93), the Left T (LT) (3.62 +/- 2.10 to 2.10 +/- 1.06), the Left SCM (LSCM) (2.64 +/- 0.69 to 1.94 +/- 0.95), and the SH (11.59 +/- 7.72 to 7.82 +/- 5.95) during the production of the E/vowel; and for the RT (3.56 +/- 2.77 to 1.93 +/- 1.13), the LT (4.68 +/- 2.56 to 3.09 +/- 2.31), the Right SCM (RSCM) (3.94 +/- 2.04 to 2.51 +/- 1.87), and the LSCM (3.54 +/- 1.04 to 3.12 +/- 3.00) during SS. A relieve in pain was also observed. Regarding the voice analysis, there was a decrease in level of laryngeal injuries; no difference was observed during the production of the E/vowel in the perceptive-auditory analysis; there was a decrease in the level of dysphonia and hoarseness during SS.
TENS is effective in improving the clinical and functional signs of dysphonic women.
研究表明发音障碍与肌肉紧张之间存在关联。
在应用经皮电刺激神经疗法（TENS）后，双侧评估舌骨上肌群（SH）、胸锁乳突肌（SCM）和斜方肌（T）的电活动、疼痛情况及嗓音状况。
10名患有结节或双侧黏液增厚以及发声裂隙的女性志愿者。志愿者接受10次TENS治疗（200微安和10赫兹），每次30分钟。使用视觉模拟量表评估疼痛；通过喉镜检查以及感知 - 听觉和声学分析评估嗓音；使用均方根（RMS）转换肌电信号。在发E/元音和自发 speech（SS）过程中收集嗓音和肌电图数据。
采用夏皮罗 - 威尔克检验，随后进行威尔科克森检验、t检验或弗里德曼检验（p < 0.05）。
观察到在发E/元音过程中，TENS治疗前后，右侧斜方肌（RT）的RMS读数降低（从2.80±1.36降至1.77±0.93），左侧斜方肌（LT）（从3.62±2.10降至2.10±1.06），左侧胸锁乳突肌（LSCM）（从2.64±0.69降至1.94±0.95），以及舌骨上肌群（从11.59±7.72降至7.82±5.95）；在自发 speech（SS）过程中，RT（从3.56±2.77降至1.93±1.13），LT（从4.68±2.56降至3.09±2.31），右侧胸锁乳突肌（RSCM）（从3.94±2.04降至2.51±1.87），以及LSCM（从3.54±1.04降至3.12±3.00）。还观察到疼痛减轻。关于嗓音分析，喉部损伤程度降低；在发E/元音过程中，感知 - 听觉分析未观察到差异；在自发 speech（SS）过程中，发音障碍和嘶哑程度降低。
TENS对改善发音障碍女性的临床和功能体征有效。
