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Early specialization is often sold as a shortcut, but it often comes at the cost of broader development. A recent study (VanZile et al., 2025) on 110 male high school athletes compared countermovement jump (CMJ) and dynamic balance performance across low, moderate, and high
specialization groups. CMJ performance? No significant difference. But dynamic balance, assessed via the Y-Balance Test, was significantly worse in the high-specialization group. Repeating the same patterns year round may refine specific skills, but it can also narrow movement
options, expose coordination specialization groups. CMJ performance? No significant difference. But dynamic balance, assessed via the Y-Balance Test, was significantly worse in the high-specialization group. Repeating the same patterns year round may refine specific skills,
but it can also narrow movement options, expose coordination gaps, and raise injury risk. This doesn’t mean avoid sport-specific work. It means don’t ignore general physical development, especially early on. You’re not just building a skill set. You’re building an athlete.
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