Department of Speech Therapy, School of Rehabilitation, Tehran University of Medical Sciences, Tehran, Iran.
Department of Physiotherapy, School of Rehabilitation, Tehran University of Medical Sciences, Tehran, Iran.
J Voice. 2020 Nov;34(6):963.e11-963.e21. doi: 10.1016/j.jvoice.2019.06.002. Epub 2019 Jul 26.
There are several voice therapy techniques been suggested in patients with muscle tension dysphonia (MTD), however a few studies are compared between them. The purpose of present study was to compare the effect of vocal facilitating techniques (VFTs) and manual circumlaryngeal therapy (MCT) in teachers with MTD.
This is a randomized clinical trial study.
Sixteen teachers with MTD (female; mean age: 38.6 ± 4.6 years) participated in this study. The participants allocated to two treatment groups: the first group received VFTs (n: 8) and MCT was presented to the second one (n: 8). In each group, the voice therapy techniques were given for 10 individual sessions twice a week. The effect of both techniques was assessed using voice handicap index (VHI) and dysphonia severity index (DSI).
Within group comparison, the VHI, DSI, and theirs components showed significantly better results after both treatment groups (P ≤ 0.05). Although, effect size was strong for all target features (η2 > 0.36); the greatest magnitude was obtained on the physical subscale of VHI following MCT and for the DSI after VFTs (η2 = 0.92 and 0.90, respectively). Moreover, the interactive effect of time and treatment groups indicated that there was significant main effect on the physical and functional subscales of VHI (P = 0.00 and 0.02, respectively) as well as I-low and DSI (P = 0.01 and 0.02, respectively).
VFTs and MCT are two effective techniques in voice therapy of teachers with MTD. However, the greatest improvement obtained on the DSI following VFTs and for the physical aspect of VHI after MCT demonstrated voice therapist can use appropriate technique based on the voice complaints and results of voice assessments in MTD.
有几种语音治疗技术已被建议用于肌紧张性发音障碍（MTD）患者，但很少有研究对这些技术进行比较。本研究的目的是比较声乐促进技术（VFT）和手动环状治疗（MCT）在 MTD 教师中的效果。
这是一项随机临床试验研究。
16 名 MTD 教师（女性；平均年龄：38.6±4.6 岁）参与了这项研究。参与者被分配到两个治疗组：第一组接受 VFT（n=8），第二组接受 MCT（n=8）。在每个组中，每周两次进行 10 次个体语音治疗技术。使用语音障碍指数（VHI）和发音障碍严重程度指数（DSI）评估两种技术的效果。
组内比较，两组治疗后 VHI、DSI 及其各成分均有显著改善（P≤0.05）。尽管所有目标特征的效果大小均较强（η2>0.36）；但 MCT 后 VHI 的身体分量表和 VFT 后 DSI 的效果最大（η2分别为 0.92 和 0.90）。此外，时间和治疗组的交互作用表明，VHI 的身体和功能分量表以及 I-low 和 DSI 均有显著的主效应（P=0.00 和 0.02，分别）以及（P=0.01 和 0.02，分别）。
VFT 和 MCT 是 MTD 教师语音治疗的两种有效技术。然而，VFT 后 DSI 以及 MCT 后 VHI 的身体方面得到的最大改善表明，语音治疗师可以根据 MTD 中的语音投诉和语音评估结果使用适当的技术。
