title: Normative data and test-retest reliability of the sinusoidal harmonic acceleration test, pseudorandom rotation test and velocity step test.
abstract: Rotational testing has been used in clinical practice to explore vestibular function. Frequently used stimulus algorithms include: sinusoidal harmonic acceleration test (SHAT), pseudorandom rotation test (PRRT), and velocity step test (VST). The aim of this study was to construct normative data as well as to evaluate the test-retest reliability of those rotational paradigms. One hundred and fifty subjects without vestibular history participated in the normative study. The SHAT was presented at 5 frequencies (0.01, 0.02, 0.05, 0.1, 0.2 Hz), whereas for the PRRT those frequencies were summed. The VST consisted of a rotation to the right and left and was administered twice. Thirty-two volunteers were retested to assess the test-retest reliability. Separate normative data were needed according to sex, stimulus type, and frequency for the SHAT and PRRT, and according to stimulus and direction for the VST. High reliability by means of the intraclass correlation coefficient (ICC) and the method error (ME) was obtained for the SHAT, PRRT, and VST gain, SHAT phase and asymmetry, and VST time constant parameters. The availability of data on the minimal detectable test-retest differences supports the evaluation of rotational responses on a retest session.
authors.affiliation: University of Ghent, Faculty of Medicine, ENT-department, De Pintelaan 185, B-9000 Ghent, Belgium. LeenK.Maes@Ugent.be
authors.forename: Leen
authors.initials: L
authors.lastname: Maes
authors.forename: Ingeborg
authors.initials: I
authors.lastname: Dhooge
authors.forename: Eddy
authors.initials: E
authors.lastname: De Vel
authors.forename: Wendy
authors.initials: W
authors.lastname: D'haenens
authors.forename: Annelies
authors.initials: A
authors.lastname: Bockstael
authors.forename: Hannah
authors.initials: H
authors.lastname: Keppler
authors.forename: Birgit
authors.initials: B
authors.lastname: Philips
authors.forename: Freya
authors.initials: F
authors.lastname: Swinnen
authors.forename: Bart M
authors.initials: BM
authors.lastname: Vinck
mesh_terms: D000054:Acceleration; D000293:Adolescent; D000328:Adult; D005080:Exercise Test; D005133:Eye Movements; D005260:Female; D006801:Humans; D008297:Male; D009760:Nystagmus, Physiologic / Q000502:physiology; D011897:Random Allocation; D015203:Reproducibility of Results; D012399:Rotation; D012737:Sex Factors; D014724:Vestibular Function Tests