言语语言病理学专业学生的发声效果：服务提供过程中发声前后的情况。
Vocal effectiveness of speech-language pathology students: Before and after voice use during service delivery.
作者信息
Couch Stephanie, Zieba Dominique, Van der Linde Jeannie, Van der Merwe Anita
机构信息
Department of Speech-Language Pathology, University of Pretoria.
出版信息
S Afr J Commun Disord. 2015 Mar 26;62(1):E1-7. doi: 10.4102/sajcd.v62i1.95.
BACKGROUND
As a professional voice user, it is imperative that a speech-language pathologist's(SLP) vocal effectiveness remain consistent throughout the day. Many factors may contribute to reduced vocal effectiveness, including prolonged voice use, vocally abusive behaviours,poor vocal hygiene and environmental factors.
OBJECTIVES
To determine the effect of service delivery on the perceptual and acoustic features of voice.
METHOD
A quasi-experimental., pre-test-post-test research design was used. Participants included third- and final-year speech-language pathology students at the University of Pretoria(South Africa). Voice parameters were evaluated in a pre-test measurement, after which the participants provided two consecutive hours of therapy. A post-test measurement was then completed. Data analysis consisted of an instrumental analysis in which the multidimensional voice programme (MDVP) and the voice range profile (VRP) were used to measure vocal parameters and then calculate the dysphonia severity index (DSI). The GRBASI scale was used to conduct a perceptual analysis of voice quality. Data were processed using descriptive statistics to determine change in each measured parameter after service delivery.
RESULTS
A change of clinical significance was observed in the acoustic and perceptual parameters of voice.
CONCLUSION
Guidelines for SLPs in order to maintain optimal vocal effectiveness were suggested.
背景
作为专业的嗓音使用者，言语治疗师（SLP）的嗓音有效性在一整天中保持一致至关重要。许多因素可能导致嗓音有效性降低，包括长时间使用嗓音、嗓音滥用行为、不良的嗓音卫生习惯和环境因素。
目的
确定服务提供对嗓音的感知和声学特征的影响。
方法
采用准实验性的前测-后测研究设计。参与者包括南非比勒陀利亚大学三年级和最后一年的言语病理学学生。在进行前测时评估嗓音参数，之后参与者提供连续两小时的治疗。然后完成后测。数据分析包括仪器分析，其中使用多维度嗓音程序（MDVP）和嗓音音域剖面图（VRP）来测量嗓音参数，然后计算嗓音障碍严重程度指数（DSI）。使用GRBASI量表对嗓音质量进行感知分析。使用描述性统计对数据进行处理，以确定服务提供后每个测量参数的变化。
结果
在嗓音的声学和感知参数方面观察到具有临床意义的变化。
结论
提出了言语治疗师保持最佳嗓音有效性的指导方针。
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