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Weighted data for lower (A) and upper (B) body strength, CMJ (C), intermittent endurance (D), 10-m sprint (E), 30-m sprint (F), and CoD (G) results. The sample size for each age group is indicated below the x-axis The numbers in parentheses represent the available studies for the respective age group. Dotted lines highlight age groups with low samples. Norm: normalized. Wtd; weighted. LB: lower body. CoD: change of direction. Int: intermittent. Perf: performance.
