Volume 40 Number 5, September/October 2003
Pages 415 — 422
Validity and reliability of the motion sensitivity test
Faith W. Akin, PhD; Mary Jo Davenport, PT, MS
Auditory and Vestibular Dysfunction Research Enhancement Award Program, Audiology and Speech Pathology Service, James H. Quillen VA Medical Center, Mountain Home, TN; Department of Physical Therapy,
East Tennessee State University, Johnson City, TN
Abstract — The Motion Sensitivity Test (MST) is a clinical protocol designed to measure motion-provoked dizziness during a series of 16 quick changes to head or body positions. The MST has been used as a guide for developing an exercise program for patients with motion-provoked dizziness and as a treatment outcome measure to monitor the effectiveness of vestibular rehabilitation therapy. This study determined validity, test-retest reliability, and interrater reliability of the MST. Fifteen individuals with motion-provoked dizziness and ten control individuals were tested during sessions occurring 90 min and/or 24 hr after baseline testing. The MST was found to be reliable across raters (intraclass correlation coefficient [ICC] = 0.99) and test sessions (ICC = 0.98 and 0.96). Test validity was good. The results indicated that the MST can be used reliably in clinical practice to develop exercise programs for patients with motion-provoked dizziness and to provide evidence of intervention efficacy.
Key words: dizziness, falls, habituation, vestibular function tests.