Combined FIFA 11+  Kids and Neuromuscular Training Effects in Youth Soccer Players

Integrating proprioceptive and neuromuscular exercises into the FIFA 11+  Kids program may enhance motor performance and postural stability in youth athletes. This study aimed to determine the effects of a 12-week combined FIFA 11+  Kids and proprioceptive-neuromuscular training program (three sessions/wk) compared with regular standard soccer training on physical and postural performance in young male soccer players aged 12-13 years. Forty players (aged 12.19±0.59 years) were randomly assigned to an experimental group (n=20) or control group (n=20). Pre- and post-tests included anthropometry, linear sprints (5-10-20 m), vertical jumps (countermovement jump and squat jump), agility, Y-Balance, and stabilometric assessment (eyes open/closed). In the experimental group, body fat showed a non-significant downward trend (-2.93%; p=0.081), while leg muscle volume significantly increased (+5.53%; group×time: p=0.007; η _p ²=0.183) alongside fat-free-mass (+2.41%; p=0.015). Sprint performance improved significantly at 5 m (5.16%; p=0.004; η _p ²=0.206), 10 m (4.75%; p=0.008; η _p ²=0.270), and 20 m (3.28%; p=0.019). Countermovement jump and squat jump also improved (7.63-14.97%; p=0.046 and p=0.002, respectively). Y-Balance scores and postural stability improved, particularly unipodal mediolateral sway (-35.19%; p=0.001; η _p ²=0.224). Conversely, the control group showed no significant changes across anthropometric, performance, balance, or stabilometric parameters. The combined program effectively enhanced athletic performance, body composition, and postural control, strongly supporting its systematic implementation within youth soccer training programs.