Aging effect and test-retest reliability of the sinusoidal harmonic acceleration test and velocity step test using nanotorque rotatory chair
Nourhan Ghoraba
Samir Assal
Doaa Elmoazen
Audiovestibular Medicine Unit,Otorhinolaryngology Department,Faculty of Medicine,Alexandria University,Egypt
摘要：Introduction:Rotatory chair testing has been used to evaluate horizontal canal function.Frequently used tests include sinusoidal harmonic acceleration test(SHAT)and velocity step test(VST).Objectives:Assessment of age effect on the SHAT and VST and assessment of test-retest reliability of the parameters of those two tests.
Methods:A prospective study was performed on 100 subjects with no ear or vestibular complaints and normal vestibular evaluation.They were divided into two groups;Group A:below 50 years of age and Group B:50 years of age or above.SHAT was presented at frequencies 0.02,0.04,0.08,0.16,0.32,0.64 Hz with a peak velocity of 60°/s.VST was performed using a maximum velocity of 100°/s with acceleration and deceleration of 200°/s2.Thirty subjects were tested twice to assess reliability.
Results:Study participants ranged in age from 20 to 67 years.Regarding group A,the mean age was 30.92±7.31 and 55.36±4.61 for group B.No significant differences were found in SHAT parameters between the two groups.As well,there was no significant difference in VST per-rotatory time constant,however,post-rotatory time constant was significantly longer for Group B(P value＜0.05).Intraclass correlation coefficient(ICC)values showed moderate to good reliability(ICC 0.580-0.818)for SHAT parameters for the lower frequencies and indicated moderate reliability for VST time constant(ICC 0.509-0.652).
Conclusions:Age has no significant effect on the parameters of SHAT and VST.Test-retest reliability is generally good for both tests.
机标关键词：reliabilityharmonicvelocitystepchairaccelerationagingeffect
论文发表日期：2023-09-30
在线出版日期：2025-08-15（本平台首次上网日期，不代表文献的发表时间）
页数：7( 125-131 )
英文信息