Effects of a Vestibular Rehabilitation Maneuver

Study Overview
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Brief Summary
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Rotational maneuver is a vestibular rehabilitation method, performed in a supervised manner. Using a rotating chair, subjects are rotated towards the opposite direction of dominant side in order to inhibit this side and simultaneously, stimulate the subordinate side. We propose that the rehabilitative effect is the result of a decrease in the vestibular imbalance, mainly due to a decrease in the response of the dominant vestibular side. Previously, we have shown the short-term effects of this maneuver on patients with recent onset vestibular imbalance. In the present study, we investigated the long-term effects of the rotational maneuver in patients with a history of peripheral vestibular vertigo for at least one year, originally confirmed by clinical tests. Our results show a significant improvement which lasted for >4 weeks after the end of rehabilitation (i.e., the last time tested). Moreover, there seems to be a relationship between the decrease in DP values and a decrease in subjective symptoms. We propose that this maneuver can be used as an effective method for both short- and long-term rehabilitation.

Official Title
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Short-term and Long-term Effects of the Rotational Maneuver in Patients With Chronic Vestibular Imbalance

Conditions
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Vertigo

Intervention / Treatment
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* Other: rehabilitation maneuver


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: History of vertigo for at least one year Not under drug therapy for vertigo directional preponderance >10% measured by electronystagmography during rotation test Exclusion Criteria: severe vertigo intolerance to rotation previously diagnosed for a central pathology (e.g., neuroma) previously diagnosed with a fluctuating vestibular disorder (e.g., Menier's)

Ages Eligible for Study
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Minimum Age: 20 Years
Maximum Age: 70 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Supportive Care
Allocation: Non-Randomized
Intervention Model: Single Group Assignment
Masking: Double


Arms and Interventions

| Intervention/Treatment |
| --- |
|Other: rehabilitation maneuver|rotation in the direction of the weak vestibular response, every 3-7 days over a period of a month. Each rotation lasts about 2 minutes and a total of 3-7 rotations are used per session.|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Directional preponderance (DP) | It provides an objective measure of vestibular asymmetry (percentage) in response to rotation. Eye movements are measured by electronystagmography during head rotations to the right and to the left. DP (%) is calculated by the equation: 100 x (max eye velocity for rightward rotations - max eye velocity for left rotations) / (max eye velocity for rightward rotations + max eye velocity for left rotations). Values below 10% are considered normal. | Every 3-7 days for one month | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Subjective sense of a decrease in imbalance and dizziness. | Patients report the intensity and frequency of their symptoms as a measure of subjective improvement on a scale of 1 - 10, with 10 representing the most improvement. | every 3-7 days for one month | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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vestibular, vertigo, rehabilitation, rotation, balance