Effectiveness of Lee Silverman Voice Treatment® LOUD on Japanese-Speaking Patients with Parkinson’s Disease

Autor:	Satoshi Horiguchi, Keigo Nakayama, Takeshi Murakami, Chihiro Oda, Toshiyuki Yamamoto, Masako Sato
Jazyk:	angličtina
Rok vydání:	2020
Předmět:	medicine.medical_specialty Medicine (General) Parkinson's disease Article Subject business.industry Rehabilitation Physical Therapy Sports Therapy and Rehabilitation Audiology Intelligibility (communication) medicine.disease 030507 speech-language pathology & audiology 03 medical and health sciences 0302 clinical medicine R5-920 medicine Vocal loudness Phonation Lee Silverman voice treatment 0305 other medical science business 030217 neurology & neurosurgery After treatment Research Article
Zdroj:	Rehabilitation Research and Practice Rehabilitation Research and Practice, Vol 2020 (2020)
ISSN:	2090-2867
DOI:	10.1155/2020/6585264
Popis:	Background. Lee Silverman Voice Treatment® LOUD (LSVT®) is an intensive program devised in the United States to train patients with Parkinson’s disease (PD) to speak louder, at normal intensity, while keeping a good voice quality. Four weeks of LSVT® has been shown to increase vocal loudness and improve intelligibility among Japanese-speaking PD patients. However, the long-term effects of LSVT® have not been examined in these patients. Objective. This study aimed to investigate the long-term effects of LSVT® on Japanese-speaking PD patients. Methods. Twenty-one Japanese PD patients underwent a standardized course (four sessions over four consecutive days, for four weeks) of LSVT® at our hospital. Vocal loudness and intelligibility were assessed at the following three time-points: pretreatment (baseline), immediately after treatment, and at the end of the 12 month follow-up (12FU). Sound pressure levels (dB SPL) were measured during the following tasks: sustained phonation of /a/, reading a standardized text, and delivery of a monologue. Three experienced speech-language pathologists, who were blinded to patients’ identities and assessment points, assessed speech intelligibility based on recorded audio samples of each participant during the reading and monologue tasks. Results. Fourteen patients were evaluated at 12FU. Changes in dB SPL from baseline to immediately after treatment were +6.5 dB, +4.2 dB, and +2.8 dB, and those from baseline until 12FU were +4.7 dB, +3.5 dB, and +2.5 dB in sustained phonation of /a/, reading a passage, and delivery of a monologue, respectively. These changes were significant (p < 0.025) in both the baseline-to-immediately-after-treatment and baseline-to-12FU intervals. Intelligibility relative to baseline was significantly improved immediately after treatment, but not at 12FU. Conclusions. LSVT® had a long-term effect on the vocal loudness of Japanese-speaking PD patients. A short-term effect was seen in intelligibility, however, there was no significant long-term effect.
Databáze:	OpenAIRE
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