Differences in baseline and post-season King-Devick times between recreational and competitive youth soccer players

Objective: To determine if K-D scores differed between competitive youth soccer players and recreational youth soccer players ages 8-12. Design: Prospective cohort study during the spring and fall soccer seasons of 2017. Participants were 8-12 years of age and were enrolled in recreational or competitive soccer. Methods: Participants performed the K-D test before the first practice of the soccer season and during the last two weeks of the season. The main outcome measure was the time required to complete the K-D test before and after the soccer season in participants without a positive K-D screening for concussion.