Niebudek-Bogusz E, Sznurowska-Przygocka B, Fiszer M, Kotyło P, Sinkiewicz A, Modrzewska M, Sliwinska-Kowalska M
Department of Audiology and Phoniatrics, Nofer Institute of Occupational Medicine, Lodz, Poland.
Folia Phoniatr Logop. 2008;60(3):134-41. doi: 10.1159/000120290. Epub 2008 Mar 12.
An incorrect voice emission is a risk factor for developing occupational voice disorders. The study aimed at assessing the effectiveness of voice therapy in female teachers with dysphonia.
The study comprised 133 subjects with voice disorders, taking part in a vocal training programme. A reference group for the present study included 53 teachers with dysphonia. Questionnaire surveys, phoniatric examination and videostroboscopic evaluation were conducted at initial and control examination.
In the study group, an improvement after the vocal training was noted in most of the reported symptoms and also in some quantitative parameters of phoniatric examinations compared to the findings for the reference group. The number of patients who assessed their voice as normal increased significantly after the vocal training (2.3 vs. 46.6%). A significant increase in the mean maximum phonation time, from 13.3 to 16.6 s, was observed. The same applied to voice frequency range (increase from 171 to 226.8 Hz).
The outcomes of vocal training, such as a subjective improvement of voice quality and an increase in the quantitative parameters (prolonged maximum phonation time, extended voice range) seem to be important parameters for monitoring the effectiveness of training in correct voice emission.
不正确的发声是职业性嗓音障碍发生的一个风险因素。本研究旨在评估嗓音治疗对患有发声困难的女教师的有效性。
该研究包括133名患有嗓音障碍的受试者，他们参加了一个嗓音训练项目。本研究的对照组包括53名患有发声困难的教师。在初次检查和对照检查时进行问卷调查、嗓音科检查和频闪喉镜评估。
与对照组的结果相比，研究组在嗓音训练后，大多数报告的症状以及嗓音科检查的一些定量参数都有改善。嗓音训练后，将自己的嗓音评定为正常的患者数量显著增加（2.3%对46.6%）。观察到平均最长发声时间从13.3秒显著增加到16.6秒。嗓音频率范围也有同样的变化（从171赫兹增加到226.8赫兹）。
嗓音训练的结果，如嗓音质量的主观改善和定量参数的增加（最长发声时间延长、嗓音范围扩大）似乎是监测正确发声训练效果的重要参数。
