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Test-Retest Reliability and Response Stability of Gaze Stabilization, Postural Sway, and Dynamic Balance Tests in
International Journal of MS Care
|July 2, 2020
Summary
Gaze and postural measures show good reliability and stability in people with multiple sclerosis (MS), supporting their use in clinical assessments and treatment evaluation.
Area of Science:
- Neuroscience
- Rehabilitation Medicine
- Clinical Assessment
Background:
- Psychometric properties of tests for angular vestibulo-ocular reflex (aVOR) and vestibulospinal reflex function are not well-established.
- Multiple Sclerosis (MS) can impact balance and gaze stabilization, necessitating reliable assessment tools.
Purpose of the Study:
- To investigate the test-retest reliability and response stability of specific measures.
- To evaluate these measures in individuals with MS and healthy controls.
Main Methods:
- Participants (19 MS, 14 controls) underwent repeated assessments of passive head impulses, quiet standing, and dynamic balance.
- Measures included aVOR gain, compensatory saccades (CSs), gaze error, postural sway, and the Functional Gait Assessment.
- Reliability was quantified using intraclass correlation coefficients, SEM, and minimal detectable difference.
Main Results:
- Moderate test-retest reliability was found for aVOR gain, CSs, and gaze position error.
- Good reliability was observed for postural sway and dynamic balance measures.
- Low error and minimal detectable difference values indicated acceptable response stability for most measures.
Conclusions:
- Selected gaze, postural sway, and dynamic balance measures demonstrate sufficient reliability and stability for use in individuals with MS.
- These findings support the clinical utility of these measures for examination and monitoring treatment efficacy in MS.
