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Int J Lang Commun Disord. 2011 Jan-Feb;46(1):1-16. doi: 10.3109/13682822.2010.484848.

Treating disordered speech and voice in Parkinson's disease online: a randomized controlled non-inferiority trial.

Author information

1
School of Health and Rehabilitation Sciences University of Queensland, Brisbane, Australia. gabriella@hearandsaycentre.com.au

Abstract

BACKGROUND:

Telerehabilitation may be a feasible solution to the current problems faced by people with Parkinson's disease in accessing speech pathology services.

AIM:

To investigate the validity and reliability of online delivery of the Lee Silverman Voice Treatment (LSVT®) for the speech and voice disorder associated with Parkinson's disease.

METHOD & PROCEDURES:

Thirty-four participants with Parkinson's disease and mild-to-moderate hypokinetic dysarthria took part in the randomized controlled non-inferiority laboratory trial and received the LSVT® in either the online or the face-to-face environment. Online sessions were conducted via two personal computer-based videoconferencing systems with real-time and store-and-forward capabilities operating on a 128 kbit/s Internet connection. Participants were assessed pre- and post-treatment on acoustic measures of mean vocal sound pressure level, phonation time, maximum fundamental frequency range, and perceptual measures of voice, articulatory precision and speech intelligibility.

OUTCOMES & RESULTS:

Non-inferiority of the online LSVT® modality was confirmed for the primary outcome measure of mean change in sound pressure level on a monologue task. Additionally, non-significant main effects for the LSVT® environment, dysarthria severity, and interaction effects were obtained for all outcomes measures. Significant improvements following the LSVT® were also noted on the majority of measures. The LSVT® was successfully delivered online, although some networking difficulties were encountered on a few occasions. High participant satisfaction was reported overall.

CONCLUSIONS & IMPLICATIONS:

Online treatment for hypokinetic dysarthria associated with Parkinson's disease appears to be clinically valid and reliable. Suggestions for future research are outlined.

PMID:
21281410
DOI:
10.3109/13682822.2010.484848
[Indexed for MEDLINE]

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