Core stability and the ability to balance have both a critical role in today’s modern soccer. Majority of injuries originated from the weakness and inefficient strength of core musculature and the kinetic chain. The purpose of our study was to investigate the effect of a three month proprioceptive training programme on core stability and the ability to balance. We hypothesized that both of the skills might improve by the end of the 12-week exercise program. We set up a group involving 15 players, who regularly participated in a weekly 40 minutes special proprioceptive training routine. The control group hasn’t attended any additional strengthening workout session. The youngsters executed a fitball balancing task, in a seated position, and the so-called Stork-test.  Before the 3-month exercise program, we implemented a pre-, at the end of the program a post-test. According to our results, we may conclude that we had measured a significant difference only in the Fitball-test when players executed the single leg balancing test (Stork-test), we haven’t observed any significant difference.