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Effect of smooth eye tracking in different patterns on results of the modified Clinical Balance Sensory Integration Test in healthy young adults

Wójtowicz Sebastian, Łakoma Aleksandra, Ferenc Aneta, Daniluk Anna, Wiaderna Karolina, Hadamus Anna

Acta of Bioengineering and Biomechanics

2022

Vol. 24, no. 4

57--64

The aim of the study was to determine whether eye tracking of a point moving in different directions influences balance test performance in young healthy subjects. Methods: The study enrolled 45 healthy young adults aged 19–26. Balance assessment was carried out according to the modified Clinical Balance Sensory Integration Test protocol using the Biodex Balance System with an additional 63” screen to present the eye-tracking task. Each participant repeated measurements in standing on a stable and foam surface in six test conditions: two without eye tracking with eyes open and eyes closed, and four with eye tracking: with vertical, horizontal, star, and circle moving point. Each trial lasted 30 sec. Results: Regression analysis for the Sway Index showed that there was no impact of eye tracking on test results ( p = 0.4326), although detailed analysis showed a significant impact of tracking a point moving in a circle in standing on a foam surface ( p < 0.001). Conclusions: The presented results show that eye-tracking does not influence the results of the balance test with exception of eye-tracking of the circle movement in standing on a foam surface. It suggests that eye movements may affect the test results when performing more difficult balance tests.