Email this article Early and High Sport Specialization in a Prepubertal Karate Kata Athlete: An Evidence-Based Case Report
Abstract
Early sport specialization is increasingly common, although its independent contribution to injury risk remains uncertain. Its long-term benefits are also unclear and potential risks require individualized clinical interpretation. This evidence-based case report evaluated a highly specialized asymptomatic 10-year-old prepubertal boy (Tanner Stage I, body mass index in the 93rd percentile) who practiced karate kata since age five. A structured search of PubMed, Scopus, and the Cochrane Library was conducted using a Patient-Exposure-Comparison-Outcome (PECO) framework. Reviews comparing specialization with multisport participation or later specialization were screened. Six reviews were included and critically appraised. Quantitative evidence from broader youth-athlete cohorts demonstrated that high specialization significantly increases overuse-injury risk (RR = 1.81, 95% confidence interval [CI] 1.26–2.60) and total-injury risk (RR = 1.37, 95% CI 1.19–1.57). Evidence for performance and psychological outcomes was heterogeneous. Crucially, direct empirical evidence regarding prepubertal karate kata specialists is currently lacking, rendering all applied recommendations indirect. Consequently, the findings are based primarily on indirect evidence from youth sport populations. For this asymptomatic child, the available evidence supports a primary prevention approach rather than sport cessation. Through cautious clinical extrapolation, we recommend a customized risk-management plan that includes periodized participation, planned rest, movement diversification, neuromuscular training, ongoing monitoring, and shared decision-making.
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DOI: https://doi.org/10.17509/jpjo.v11i2.104263
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