Speech Hearing and Language Disorders, Bauru School, Dentistry/University of São Paulo-FOB/USP, Bauru, São Paulo, Brazil.
Speech Hearing and Language Disorders Department, Bauru School, Dentistry/University of São Paulo-FOB/USP, Bauru, São Paulo, Brazil.
J Voice. 2019 May;33(3):381.e11-381.e22. doi: 10.1016/j.jvoice.2017.12.015. Epub 2018 Apr 19.
To analyze the effectiveness of vocal therapy associated with electromyographic biofeedback in women with behavioral dysphonia.
This is a randomized placebo-controlled double-blind clinical trial. Twenty-two adult women with behavioral dysphonia were randomly divided into two groups: Experimental Group-11 women participated in vocal therapy associated with the application of electromyographic biofeedback; Placebo Group-11 women participated in vocal therapy associated with the application of placebo electromyographic biofeedback. Both groups performed eight therapy sessions, twice a week, lasting 30 minutes. The vocal therapy of both groups was composed of semioccluded vocal tract exercises (trill, humming, and fricative). The evaluations were performed at four time points-before, after, one, and three months after the vocal therapy-and will consist of the following assessments: auditory-perceptual evaluation of voice, acoustic evaluation of voice, and surface electromyographic. The data were analyzed statistically comparing the groups and the time of evaluation (P < 0.05).
The proposed vocal therapy promoted positive results in vocal quality and muscular electrical activity during rest in women with behavioral dysphonia for both groups. Electromyographic biofeedback promoted additional positive results in muscle electrical activity during phonatory tasks in women with behavioral dysphonia.
In this study, the vocal therapy associated with electromyographic biofeedback had equivalent efficacy to traditional therapy in the voice. The biofeedback was more effective than traditional therapy on muscular electrical activity and had effects that remained for a longer time in women with behavioral dysphonia.
分析行为性发声障碍女性接受嗓音治疗联合肌电生物反馈的效果。
这是一项随机安慰剂对照双盲临床试验。22 名成年行为性发声障碍女性被随机分为两组：实验组 11 名女性接受嗓音治疗联合肌电生物反馈应用；安慰剂组 11 名女性接受嗓音治疗联合安慰剂肌电生物反馈应用。两组均接受 8 次治疗，每周 2 次，每次 30 分钟。两组的嗓音治疗均由半封闭声道练习（颤音、哼唱和摩擦音）组成。在治疗前、治疗后、治疗后 1 个月和 3 个月共 4 个时间点进行评估，包括：嗓音的听觉感知评估、嗓音声学评估和表面肌电图。对组间和评估时间（P<0.05）进行统计学分析。
对于行为性发声障碍女性，提出的嗓音治疗联合肌电生物反馈均能改善嗓音质量和休息时的肌肉电活动，两组均有积极效果。肌电生物反馈在发声任务时对肌肉电活动有额外的积极效果，对行为性发声障碍女性的效果持续时间更长。
在这项研究中，嗓音治疗联合肌电生物反馈与传统疗法对嗓音效果相当。与传统疗法相比，生物反馈在肌肉电活动方面更有效，对行为性发声障碍女性的效果持续时间更长。
