The analysis of COP and joint position sense in university soccer players with and without ankle instability

The soccer is one of the most popular sport modality around the world, with millions of practitioners of different levels, and thus, the incidence of injuries are expressive. Among these injuries, the ankle sprain is the one that stands out .  e ankle sprains are very common in soccer due to the demand of changes in direction performed with high velocities, after jumps and during the sprints itself 4, .  ese rapid changes in direction or landing on irregular surfaces produces a large supination torque, causing the ankle to perform an excessive movement, overloading the joint and its structures, mainly the anterior talo-€ bular and the calcaneo-€ bular ligaments. Repeated episodes of ankle sprains may negatively a ect the proprioception, which correspond to the perception of position and movement (i.e., synesthesia) of the body and its segments.  ese information are provided by mechanoreceptors in the muscles, tendons, skin, joint capsules and ligaments.  ese mechanoreceptors are sensitized by mechanics energy imposed to the joint and it is transmitted to the central nervous system by a erents impulses. As a consequence to sprains, the a erent € bers of the Abstract