Effects of a Vestibular Rehabilitation Maneuver

Sponsor

Day General Hospital. (Other)

Overall Status

Completed

CT.gov ID

NCT01080430

Collaborator

Shahid Beheshti University of Medical Sciences (Other)

Enrollment

Location

Duration (Months)

Patients Per Site Per Month

Study Details

Study Description

Brief Summary

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.

Condition or Disease	Intervention/Treatment	Phase
Vertigo	Other: rehabilitation maneuver	N/A

Study Design

Study Type:

Interventional

Actual Enrollment :

16 participants

Allocation:

Non-Randomized

Intervention Model:

Single Group Assignment

Masking:

Double (Participant, Outcomes Assessor)

Primary Purpose:

Supportive Care

Official Title:

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

Study Start Date :

Nov 1, 2007

Actual Primary Completion Date :

Mar 1, 2009

Actual Study Completion Date :

Mar 1, 2009

Outcome Measures

Primary Outcome Measures

Directional preponderance (DP) [Every 3-7 days for one month]
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.

Secondary Outcome Measures

Subjective sense of a decrease in imbalance and dizziness. [every 3-7 days for one month]
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.

Eligibility Criteria

Criteria

Ages Eligible for Study:

20 Years to 70 Years

Sexes Eligible for Study:

All

Accepts Healthy Volunteers:

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