Resumen:
Background and Objectives: This study aimed to investigate the magnitude of vertical jump
inter-limb asymmetries among young highly-trained basketball athletes and to analyze its impact
on sport performance, specifically in sprints, agility, and vertical jumps. Materials and Methods: A
unilateral countermovement jump (CMJ) was employed to determine Inter-limb Index Asymmetry
(IAI) in 320 participants aged from 14 to 18 years, from the Valencia Basket youth academy. IAI was
categorized into three groups: 0–9.9%, 10–14.9%, and >15%. The relationship between IAI and performance
variables was analyzed through correlation studies (Pearson or Spearman’s). The influence
of IAI magnitude was assessed using ANOVA or Kruskal–Wallis analysis, with leg dominance as
a covariable. SPSS Statistics version 26 was used for analysis. Results: Among all the participants,
the mean IAI was 10.6%. Correlation studies revealed non-significant values (p < 0.05) between
IAI and sport performance variables. The three IAI magnitude groups did not show statistically
significant differences in sprint, agility, and jump outcomes. Leg dominance did not seem to influence
performance outcomes, except for unilateral C...