A retrospective study of long-term treatment outcomes for reduced vocal intensity in hypokinetic dysarthria

BMC Ear, Nose, and Throat Disorders
Christopher R Watts

Abstract

Reduced vocal intensity is a core impairment of hypokinetic dysarthria in Parkinson's disease (PD). Speech treatments have been developed to rehabilitate the vocal subsystems underlying this impairment. Intensive treatment programs requiring high-intensity voice and speech exercises with clinician-guided prompting and feedback have been established as effective for improving vocal function. Less is known, however, regarding long-term outcomes of clinical benefit in speakers with PD who receive these treatments. A retrospective cohort design was utilized. Data from 78 patient files across a three year period were analyzed. All patients received a structured, intensive program of voice therapy focusing on speaking intent and loudness. The dependent variable for all analyses was vocal intensity in decibels (dBSPL). Vocal intensity during sustained vowel production, reading, and novel conversational speech was compared at pre-treatment, post-treatment, six month follow-up, and twelve month follow-up periods. Statistically significant increases in vocal intensity were found at post-treatment, 6 months, and 12 month follow-up periods with intensity gains ranging from 5 to 17 dB depending on speaking condition and measurement period. ...Continue Reading

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Citations

May 19, 2020·American Journal of Speech-language Pathology·Alison BehrmanShilpa Chitnis
Aug 3, 2021·Logopedics, Phoniatrics, Vocology·Alison BehrmanSamantha Elandary

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