An evaluation of the test-retest reliability of the functional head impulse test in healthy young adults
Gulce Kirazli1, Tugba Emekci2, Feyza Inceoglu3
1Department of Audiology, Faculty of Health Sciences, Ege University, Izmir, Turkey.
Aim:
To determine the test and retest reliability of the functional head impulse test (fHIT) in healthy young adults.
Materials And Methods:
Thirty-three healthy participants (17 women, 16 men) aged 18-30 years were included in the study. Each participant underwent the fHIT twice, 1 week apart, by the same experienced clinician. Intraclass correlation coefficients (ICCs) were used to determine test-retest reliability.
Results:
There was no statistically significant difference between the results of total percentage of correct answer (CA%) of the fHIT obtained in session 1 and session 2 measurements in the lateral, anterior, and posterior semicircular canals (SCCs) (p > 0.05). ICC values for test-retest reliability were found to range from 0.619 to 0.665 for the three semicircular canals (SCCs).
Conclusion:
The test-retest reliability of the fHIT device was moderate. Attention, cognition, and fatigue may be the factors reducing reliability. In the diagnosis, follow-up, and rehabilitation processes of vestibular diseases in clinics, changes in the fHIT CA% can be used to assess vestibulo-ocular reflex (VOR) functionality.
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