Foot Symmetry and Plantar Pressure Characteristics in Elite Taekwondo Athletes; Preferred and Non-Preferred Foot Comparison

Abstract

Objective: The aim of this study was to investigate differences in plantar pressure characteristics between preferred and non-preferred foot in elite taekwondo athletes. Material and Methods: The study population consisted of 11 elite taekwondo athletes ages ranged between 19.16±2.72 years. To determine preferred foot, they were also asked which leg they preferred to kick a ball. Plantar pressure distributions were measured by pedobarography device. The relative pressure-loads (%) between preferred and non-preferred foot determined with static pedobarographic measurements while subject stand on the pressure plate. The dynamic pedobarographic measurements were performed to investigate plantar pressure distribution, temporal characteristics and peak pressure asymmetry between preferred and non-preferred foot. Results: There was no statistically difference between preferred and non-preferred foot with regard to static measurement results. No significant differences were found between foots for temporal characteristics and peak pressure underneath the ten anatomical areas. The absolute impulse underneath the second metatarsal was significantly higher at preferred foot while absolute impulse of lateral heel was higher at non-preferred foot. The relative impulse of second metatarsal and third metatarsal were also significantly higher at preferred foot. Peak pressure asymmetry was found in favor to non-preferred foot. Conclusion: The finding of present study indicates that the peak pressure beneath the preferred and non-preferred foot is not symmetrical. Peak pressure asymmetry finding indicates that preferred and non-preferred foot should be assessed and trained separately to prevent sports injury in taekwondo.