The effectiveness of Beckman Oral Motor Therapy on severe dysarthria

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The effectiveness of Beckman Oral Motor Therapy on severe dysarthria


Author: Lee, Wai-ling Janise
Title: The effectiveness of Beckman Oral Motor Therapy on severe dysarthria
Degree: M.Sc.
Year: 2008
Subject: Hong Kong Polytechnic University -- Dissertations.
Articulation disorders in children -- China -- Hong Kong -- Treatment
Speech therapy for children -- China -- Hong Kong.
Articulation disorders -- Treatment.
Department: Dept. of Rehabilitation Sciences
Pages: ix, 74 leaves : ill. ; 30 cm.
Language: English
InnoPac Record:
Abstract: Dysarthria is a group of speech impairments caused by disturbances in muscular control resulting from damage to the central and/or peripheral nervous system. People with severe dysarthria often produce distorted vowels or even unable to articulate certain vowels due to very limited oral motor ability. Traditional articulation therapy adopting sound elicitation techniques may not be sufficient to tackle the neuromuscular deficits of dysarthria, therefore, oral motor therapy has been a common practice in conjunction with the traditional articulation therapy for the management of dysarthria. To date, efficacy studies on oral motor therapy are limited in number and scope. This study aimed to investigate the effectiveness of the Beckman Oral Motor Therapy (1988 version) on vowel production of people with severe dysarthria. The Beckman Oral Motor Therapy was the only passive oral motor therapy programs developed in the past decade for people with severe dysarthria. It consists of 26 exercises targeting precisely on different regions of articulators. It also has unique characteristics by including an assessment component, with comprehensive coverage and wide applicability. This study employed a pretest-and-posttest research design with two groups of subjects. Fourteen Cantonese-speaking individuals diagnosed with severe dysarthria were recruited from a special school for children with physically handicap. The subjects were matched and assigned into two groups. The experimental group received both the Beckman Oral Motor Therapy and the traditional articulation therapy whereas the comparison group received the traditional articulation therapy only. The vowel production performance, measured in F1-F2 quadrilateral area, was the dependent variable of the study. Result of two-sample t-test indicated that there was significant difference in the change of F1-F2 quadrilateral area between the experimental group and the comparison group in the pre- and post-intervention assessment [t = 2.226(12), p = 0.046]. Further analysis of the F1-F2 quadrilateral area found that the vowels differentiated in a greater extent in the experimental group after intervention. The findings suggested that the Beckman Oral Motor Therapy together with the traditional articulation therapy was more effective than the traditional articulation therapy alone in facilitating the vowel production for people with severe dysarthria. This study not only served as the first controlled study to provide empirical data in the effectiveness of the Beckman Oral Motor Therapy in clinical practice, but also served as a research base for further efficacy studies of other oral motor therapy programs in the field of speech-language-pathology.

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