The influence of physical fitness attributes on external demands during simulated basketball matches in youth players according to age category

This study aimed to: 1) compare physical fitness attributes and the external demands encountered during simulated matches in youth basketball players between age categories (under 14 years [U14], under 16 years [U16], and under 18 years [U18]), and 2) examine the relationships between physical fitness attributes and external demands during simulated matches in each age category. Thirty young basketball players categorized according to age (U14, n = 10; U16, n = 10; and U18, n = 10) completed a fitness test battery consisting of linear sprint, change-of-direction speed, repeated-change-of-direction speed, and jump assessments, and simulated matches monitored using local positioning system technology one week later. One‐way analyses of variance (ANOVA) with Bonferroni post hoc tests, as well as Cohen's effect sizes were used to compare physical fitness attributes and external match demands between age categories. Pearson's correlations and linear regression analyses were performed to quantify the relationships and shared variance between physical fitness attributes and external match demands in each age category. U14 players possessed lower (p <0.05, large-very large effects) physical fitness across all tests and performed less (p <0.05, large-very large effects) high-speed running (18.1–24.0 km•h ) during simulated matches than U16 and U18 players. Physical fitness attributes were significantly associated with external variables during simulated matches in each category, particularly in U14 players. These findings suggest coaches should implement training strategies targeting specific fitness attributes according to age in youth basketball players. −1