Background: The aim of this study is to compare the possible functional involvement of the vestibulo-ocular reflex in the follicular and luteal phases.
Methods: The research was carried out at a university located in eastern Turkey. The study included 37 healthy female volunteering students aged 18-25 years. The functional head impulse test was applied twice in the follicular phase and in the luteal phase, and the results in both phases were compared.
Results: In the functional head impulse test, statistically significant differences were obtained between the follicular phase and the luteal phase at the stimulus to the lateral semicircular canal direction total and 6000°/s2 acceleration percentage of correct answers values, the posterior semicircular canal direction stimulations at 3000°/s2 and 5000°/s2 acceleration percentage of correct answers values, and the anterior semicircular canal direction stimulations at 5000°/s2 acceleration percentage of correct answers values.
Conclusion: In the luteal phase, which corresponds to the period before menstruation, the vestibulo-ocular reflex is functionally negatively affected.