Effect of an 8-Week Core Exercise Program on Jumping and Balance in Recreational Soccer Players Aged 14-16 Years

This randomized controlled trial examines the effect of an 8-week core exercise program on jumping and balance performance in recreational male soccer players aged 14 to 16 years. Thirty-six players were randomly assigned to an experimental group or a control group (18 per group). The experimental group performed a structured core exercise program twice a week, in addition to regular soccer training. The control group continued regular soccer training only. Standing long jump, vertical jump (squat jump), and static balance (Flamingo Balance Test) were measured before and after the 8-week period.

Inclusion Criteria: * Male recreational soccer players aged 14 to 16 years * Regular attendance at soccer training at least two days a week * Voluntary participation, with written informed consent from a parent or legal guardian and assent from the participant Exclusion Criteria: * Musculoskeletal injury * History of surgery * Chronic illness