Title
The treatment of muscle tension dysphonia: a comparison of two treatment techniques by means of an objective multiparameter approachThe treatment of muscle tension dysphonia: a comparison of two treatment techniques by means of an objective multiparameter approach
Author
Faculty/Department
Faculty of Sciences. Physics
Faculty of Medicine and Health Sciences
Research group
Biophysics and Biomedical Physics
Translational Neurosciences (TNW)
Publication type
article
Publication
New York, N.Y.,
Subject
Human medicine
Source (journal)
Journal of voice. - New York, N.Y.
Volume/pages
23(2010):3, p. 294-301
ISSN
0892-1997
ISI
000277924900007
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
The purpose of the present study is to measure the effectiveness of two treatment techniquesvocalization with abdominal breath support and manual circumlaryngeal therapy (MCT)in patients with muscle tension dysphonia (MTD). The vocal quality before and after the two treatment techniques was measured by means of the dysphonia severity index (DSI), which is designed to establish an objective and quantitative correlate of the perceived vocal quality. The DSI is based on the weighted combination of the following set of voice measurements: maximum phonation time (MPT), highest frequency, lowest intensity, and jitter. The repeated-measures analysis of variance (ANOVA) revealed a significant difference between the objective overall vocal quality before and after MCT. No significant differences were measured between the objective overall vocal quality before and after vocalization with abdominal breath support. This study showed evidence that MCT is an effective treatment technique for patients with elevated laryngeal position, increased laryngeal muscle tension, and MTD. The precise way in which MCT has an effect on vocal quality has not been addressed in this experiment, but merits study. Further research into this topic could focus on electromyography (EMG) recordings in relation to vocal improvements with larger sample of subjects.
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