Original Research
Vocal effectiveness of speech-language pathology students: Before and after voice use during service delivery
Submitted: 02 June 2014 | Published: 26 March 2015
About the author(s)
Stephanie Couch, Department of Speech-Language Pathology, University of Pretoria, South AfricaDominique Zieba, Department of Speech-Language Pathology, University of Pretoria, South Africa
Jeannie van der Linde, Department of Speech-Language Pathology, University of Pretoria, South Africa
Anita van der Merwe, Department of Speech-Language Pathology, University of Pretoria, South Africa
Abstract
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 wasused 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.
Keywords
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