Treatments of Acquired Apraxia of Speech
Overview
- Phase
- N/A
- Intervention
- Not specified
- Conditions
- Aphasia
- Sponsor
- VA Office of Research and Development
- Enrollment
- 20
- Locations
- 1
- Primary Endpoint
- Speech Production: Effect Size for Treated Items
- Status
- Completed
- Last Updated
- 7 years ago
Overview
Brief Summary
This study was designed to examine the effects of speech therapy on ability to produce speech sounds in persons with acquired apraxia of speech.
Detailed Description
This study was designed to investigate the effects of Sound Production Treatment (SPT; a treatment for acquired apraxia of speech) on sound production accuracy in persons with chronic apraxia of speech (AOS). Organization of practice (blocked practice or randomized practice) will be manipulated in an effort to determine the most efficacious application of SPT. A combination of group and single-subject experimental designs wasl be completed with 20 speakers with AOS (2 groups of 10 participants).
Investigators
Eligibility Criteria
Inclusion Criteria
- •Must have acquired apraxia of speech that occurred following a stroke or other brain injury.
- •Must be at least 6 months post-onset of brain injury.
- •May have aphasia.
Exclusion Criteria
- •History of drug or alcohol abuse.
- •History of mental illness.
- •Neurological condition other than that which resulted in apraxia of speech.
Outcomes
Primary Outcomes
Speech Production: Effect Size for Treated Items
Time Frame: Pre treatment (2-3 week period preceding the start of treatment) vs. 10 weeks post all treatment
Change in accuracy of articulation of trained items as measured from baseline to 10 weeks post treatment using effect size calculations as the indicator of magnitude of change; production of words designated for treatment was measured repeatedly in non treatment probes prior to treatment, throughout all study phases, and at 10 weeks post treatment with percent accuracy calculated for each probe (maximum = 100%, minimum = 0% correct). Effect size calculations involved calculating the difference between post- and pre-treatment probe accuracy percentages with corrections made for variability (standard deviations in performance). The larger the effect size, the greater the change in performance from pre-treatment. Positive effect sizes = increases in accuracy \& negative effect sizes = decreases in accuracy.
Speech Production: Percent Change in Treated Items
Time Frame: baseline to 10 weeks post treatment
Change in accuracy of articulation of treated items as measured by percent increase in accuracy above the highest baseline measurement; production of words designated for treatment was measured repeatedly in non treatment probes prior to treatment, throughout all study phases, and at 10 weeks post treatment with percent accuracy calculated for each probe (0% to 100% correct). The highest percentage accuracy achieved in pre-treatment probes was subtracted from the percentage accuracy achieved at 10 weeks post-treatment to obtain change in accuracy value - this reflects change from maximum correct performance in baseline (pre-treatment). e.g., if in baseline probes, performance ranged from 10% to 30% accuracy and at post treatment performance was 90% accuracy, the change value would be 60% (90% minus 30%). A greater change value indicates greater change in articulation/production of words. Change could be positive (improved articulation) or negative (poorer articulation).
Secondary Outcomes
- Speech Production of Untrained Items: Effect Sizes for Untrained Items(Baseline vs. 10 weeks post all treatment)
- Speech Production: Percent Change in Untrained Items(baseline to 10 weeks post treatment)