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Using CLEAR SPEECH to improve speech disorders following stroke or traumatic brain injury

In adults with non-progressive dysarthria resulting from stroke or traumatic brain injury, does CLEAR SPEECH compared to traditional speech therapy techniques result in greater improvements in speech intelligibility

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
ANZCTR
Registry ID
ACTRN12612000968875
Enrollment
40
Registered
2012-09-10
Start date
2012-08-21
Completion date
Unknown
Last updated
2020-01-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

None listed

Brief summary

Overall this research aims to determine whether or not CLEAR SPEECH is a viable treatment option for patients with non-progressive dysarthria. Specifically, this research project aims to: 1. Determine the efficacy of CLEAR SPEECH as a treatment for non-progressive dysarthria following stroke and TBI across a range of perceptual, acoustic and everyday communication outcome measures. 2. To compare the effects of CLEAR SPEECH with the outcomes of traditional dysarthria therapy (TRAD) in individuals with non- progressive dysarthria. It is hypothesized that CLEAR SPEECH will result in short and long term improvements to perceptual and acoustic measures of speech function, and ratings of everyday communication in individuals with non-progressive dysarthria. Also, the degree of improvement in speech and communication parameters will be greater following CLEAR SPEECH compared to the effects achieved following TRAD.

Interventions

CLEAR SPEECH program: Participants will first undergo two 1-hour ‘pre-practice’ treatment sessions aimed at instating CLEAR SPEECH production. During this phase participants will watch videos of people demonstrating ‘clear speech’ which they will be required to imitate. The clinician will then provide specific feedback on the participants speaking technique in order to shape their speech production into CLEAR SPEECH. Following the pre-practice phase participants will then move onto the intens

CLEAR SPEECH program: Participants will first undergo two 1-hour ‘pre-practice’ treatment sessions aimed at instating CLEAR SPEECH production. During this phase participants will watch videos of people demonstrating ‘clear speech’ which they will be required to imitate. The clinician will then provide specific feedback on the participants speaking technique in order to shape their speech production into CLEAR SPEECH. Following the pre-practice phase participants will then move onto the intensive ‘practice’ phase of the treatment regime. This phase of the treatment program consists of 1-hour therapy sessions, 4 times a week, for a one month period. Daily home practice is also required and will be strictly monitored to ensure compliance. Therapy will involve practicing tasks such as producing functional phrases, reading short passages, and holding conversations in a CLEAR manner in order to increase the clarity and intelligibility of the individual’s speech. During treatment the clinician will provide general feedback on speech clarity, labelling speech attempts as either ‘clear’ or ‘unclear’. Modelling of CLEAR SPEECH will also be provided where necessary. In addition, the participant’s speech attempts will be recorded using a digital audio recorder. These speech samples will be played back to the participant intermittently to aid in the development of self-evaluation skills. Participants will rate the speech clarity of the recorded samples on a 10-point scale, with 1= very unclear speech and 10 = clear speech.

Sponsors

The University of Queensland
Lead SponsorUniversity

Study design

Allocation
Randomised controlled trial
Intervention model
Parallel
Primary purpose
Treatment
Masking
Blinded (masking used)

Eligibility

Sex/Gender
All
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

To be eligible to participate in the study, participants will be required to be English speaking, have mild to severe non-progressive dysarthria as diagnosed by a speech pathologist, be 6 months post neurological incident, and have a cognitive status that is adequate to participate in assessment tasks. Prior to commencing the study participants will also undergo stimulability testing to assess whether they have the potential for improvements in speech clarity. Only potential participants who are able to demonstrate improvements for speech clarity will be included in the study.

Exclusion criteria

Potential participants will be excluded if, in addition to their dysarthria, they present with a co-morbid condition that may negatively impact on their ability to complete speech therapy. Such conditions include significant aphasia, hearing or vision loss, dementia, apraxia of speech, or post traumatic amnesia. Prior to inclusion in the study research personnel will screen all potential participants.

Outcome results

None listed

Source: ANZCTR · Data processed: Feb 4, 2026