ANALYSIS OF BILATERAL FORCE PLATFORM MEASUREMENTS IN SKILLED HIGH DIVERS UNDER THE INFLUENCE OF OPTOKINETIC NYSTAGMUS

Abstract

Aim. To identify changes in the sense of balance in skilled high divers associated with optokinetic nystagmus induced by optokinetic stripes. Materials and methods. The study involved 12 skilled high divers. Force platform measurements were obtained during the optokinetic test on the Stabilan-01-2 force platform with biofeedback. The results obtained were statistically processed and consisted of 11 bilateral traditional and spectral measurements in the frontal and sagittal planes. Results. The results obtained show changes in frontal displacement (X) and rotational angle measurements (Angle). For the Center of Pressure (CoP), minimal values were found; displacement to the left and to the right was established for the left and right legs, respectively, which demonstrated a natural toe-out angle. Diving contributes to the development of an adaptation to optokinetic nystagmus in skilled high divers. In skilled high divers under the conditions of optokinetic nystagmus, there is a predominance of micro-oscillations in the frontal plane, while those in the sagittal plane are minimized. Conclusion. Optokinetic nystagmus contributes to the increase in micro-oscillations in the CoP and decreases micro-oscillations in legs in the frontal plane. Unconscious micromovements stimulate leg performance for balance maintenance. Skilled high divers unconsciously activate leg performance in the heel-toe direction for balance maintenance.