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NCT03355339 Clinical Trial

The Effect of Binasal Occlusion on Balance Following a Concussion

Concussion Post Syndrome Clinical Trial

Official title:
The Effect of Binasal Occlusion on Balance Following a Concussion

Clinical Trial Details — Status: Not yet recruiting

Administrative data
NCT number NCT03355339
Other study ID # H06-17-20
Secondary ID
Status Not yet recruiting
Phase N/A
First received
Last updated
Start date November 2018
Est. completion date September 2019

Study information
Verified date October 2018
Source University of Ottawa
Contact Jacquie J van Ierssel, PT, MSc
Phone 613-562-5800
Email jminn044@uottawa.ca
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

This study evaluates the effect of binasal occlusion (BNO) glasses on balance and eye movement in adults with dizziness after a concussion. Participants will stand on a force plate while rapidly reading a series of numbers both with and without the BNO glasses. It is thought that the BNO glasses will improve both balance and the time to read the numbers.

Description:

While most individuals will recover within the first month after concussion, a significant number will continue to experience dizziness, balance problems, cognitive deficits, and vision problems. Single-task measures of static balance may not be sensitive enough, however, to capture mild postural changes still associated with incomplete recovery. Increasingly there is an interest in dual-task paradigms of balance assessment as a more accurate representation of functional postural control associated with activities of daily living and sport participation. Binasal occlusion (BNO) has been proposed as a means of providing visual stabilization to improve postural control in individuals with vision-related balance problems following a concussion.

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Study Design

Related Conditions & MeSH terms

Intervention

Device:
• Binasal occlusion
Binasal occlusion glasses
• No binasal occlusion
Non-occluded glasses

Locations
Country Name City State
n/a

Sponsors (1)
Lead Sponsor Collaborator
University of Ottawa

References & Publications (31)

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Outcome
Type Measure Description Time frame Safety issue
Primary Postural sway The primary outcome of interest is the mean medial/lateral and anterior/posterior velocity of centre of pressure, in addition to the 95% ellipse during different conditions of static balance. The minimal clinical difference considered to demonstrate a change in postural sway is 5cm based on previous validation of the Balance TrackS force plate in a concussed population. After one month post-injury. Data collection will occur in one single session per participant upon enrolment in the study.
Secondary Time to completion of the King-Devick Test (KDT) The KDT is a vision-based test of rapid number naming speed that acts as a proxy measure for saccadic eye movement. The KDT consists of a demonstration card, plus a series of 3 increasingly more difficult test cards of variably spaced single digit numbers. Following completion of the demonstration card, participants are asked to read each test card from left to right, top to bottom, as quickly as possible without errors. A summary score of the test is recorded as the total time to complete all 3 test cards, measured in seconds. Time to completion for the KDT will be recorded. Any increase in time compared with a control condition, or any uncorrected errors are considered a significant change. After one month post-injury. Data collection will occur in one single session per participant upon enrolment in the study.
Secondary Saccadic eye movement Saccadic eye movement will be assessed with a Tobii™ Pro wearable eye tracker. Tobii™ Pro wearable eye tracker uses infrared video-oculography to analyze patterns of eye movement in terms of fixations and saccades. Longer, more complicated visual tasks, such as rapid number naming, require longer processing times. The number of saccades completed during each balance condition will be recorded by the Tobii™ Pro. After one month post-injury. Data collection will occur in one single session per participant upon enrolment in the study.
Secondary Post-concussion symptom score (PCSS) The PCSS is a standardized and easily administered 22-item self-report symptom scale that measures the severity of each symptom experienced that day. Symptoms are reported on a 7-point Likert scale, with 0 and 6 representing anchoring points from the absence of symptoms to the presence of severe symptoms. Results are conveyed as the total symptom score and range from 0-132, with a higher score associated with a higher level of symptoms. Total scores demonstrate high internal consistency in a concussion population (a=0.93), with a 6.8 point change (80% CI) associated with a clinical change in symptoms. After one month post-injury. Data collection will occur in one single session per participant upon enrolment in the study.
Secondary Neck Disability Index (NDI) The NDI is the most commonly used self-report outcome measure for neck pain. The index is a simple and quickly administered 10-item questionnaire measured on a 6-point Likert scale from 0=no disability to 5 = full disability. Scores range from 0-50, with 50 representing the highest level of disability. Clinically important difference have been reported with a 5-7 point change in score depending on whether the pain was of musculoskeletal or neural origin. After one month post-injury. Data collection will occur in one single session per participant upon enrolment in the study.
Secondary Dizziness Handicap Inventory (DHI) The DHI is a self-report measure of disability associated with dizziness. Internal consistency is high for total scores (a = 0.89). The presence of dizziness-related disability is scored as no (0), sometimes (2), or yes (4). Scores range from 0-100, with a higher score reflecting a greater disability associated with dizziness. Cut-off scores exist for mild (16-34), moderate (36-52), and severe (54+) disability, with an 18-point change in score considered clinically meaningful. After one month post-injury. Data collection will occur in one single session per participant upon enrolment in the study.
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