Immediate Effects of Postural Repositioning on Voice Production Tasks in Seated Individuals With Acquired Dysarthria:

Study Overview
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Brief Summary
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To determine the effectiveness of a single 10-min postural repositioning session on the maximum phonation duration in individuals with acquired dysarthria.

Detailed Description
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The impact of dysarthria goes beyond communication. However, there have been no clear directives guiding clinical practice to date, and despite increasing evidence directing treatment, research remains limited and predominantly consists of case studies or case series. Despite the importance of postural control in voice production, the effects of postural alignment on speech production efficiency are either little investigated or not at all explored in the dysarthric population. This study determined the effectiveness of a single 10-min postural repositioning session on the maximum phonation duration (MPD) in individuals with acquired dysarthria.

Official Title
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Immediate Effects of Postural Repositioning on Respiratory and Phonatory Tasks in Seated Individuals With Acquired Dysarthria: a Pilot Study

Conditions
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Acquired Dysarthria (Finding)

Intervention / Treatment
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* Other: postural repositioning


Participation Criteria
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Eligibility Criteria
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**Participants with dysarthria Inclusion criteria sustained a stroke or traumatic brain injury diagnosed with dysarthria impaired postural control following a neurological injury are approaching the end of intensive rehabilitation or have finished intensive rehabilitation express a desire to participate in the research have the capacity to read. Exclusion criteria had any cognitive impairment that could prevent them from understanding directives or from expressing their opinion about their posture A neurologist clinically assessed the cognitive function of PWDs **Control participants never diagnosed with dysarthria or any other voice impairment no comorbidities. no breathing deficits (e.g., asthma, chronic obstructive pulmonary disease) no pathologies in the spinal cord, spinal column, or thoracic cage that could prevent them from freely moving their trunk no neurological or cardiac problems.

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 65 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Intervention Model: Single Group Assignment
Interventional Model Description: pilot study
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Postural repositioning<br> | Other: postural repositioning<br>* The 10-min transdisciplinary intervention aimed (1) to facilitate and activate axial extension during standing and then during sitting; (2) to actively mobilize the trunk, cervical spine, and pelvic and shoulder girdles during standing and then during sitting; and (3) to adjust the seated position, as needed, with supports to ensure its maintenance throughout the experiment. Cushion, balls, boxes, or rolls were used to stabilize the final seated position.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change in maximum phonation duration | Production of the vowel 'a' as long as possible without running out of air | immediately before and after the 10 minute postural repositioning intervention | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change in trunk circumference in cm - Pre | Measure of the circumference of the trunk taken at the level of the xyphoid process using a measuring tape when the participants achieves maximal inspiration and maximal expiration. The difference in circumference between maximal inspiration and maximal expiration is subsequently calculated. | immediately before postural repositioning intervention | 
| Change in manometry | time prolonged expiration | immediately before and after the 10 minute postural repositioning intervention | 
| Change in EMG activation pattern | pattern of electromyographic activity of muscles in the neck and trunk | immediately before and after the 10 minute postural repositioning intervention | 
| Change in trunk circumference in cm - Post | Measure of the circumference of the trunk taken at the level of the xyphoid process using a measuring tape when the participants achieves maximal inspiration and maximal expiration. The difference in circumference between maximal inspiration and maximal expiration is subsequently calculated. | immediately after the 10 minute postural repositioning intervention | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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acquired dysarthria, corrected seated posture, maximum phonation duration, electromyographic patterns