Effect of bio-banding on physiological and technical-tactical key performance indicators in youth elite soccer

Abstract

Bio-banding has been introduced to reduce the impact of inter-individual differences due to biological maturation among youth athletes. Existing studies in youth soccer have generally examined the pilot-testing application of bio-banding. This is the first study that investigated whether bio-banded (BB) versus chronological age (CA) competition affects reliable physiological and technical-tactical in-game key performance indicators (KPIs) using a randomized cross-over repeated measures design. Sixty-five youth elite soccer players from the under-13 (U13) and under-14 (U14) age category and with maturity offsets (MO) between −2.5 and 0.5 years, competed in both a BB and CA game. For statistical analysis, players were divided into four sub-groups according to CA and MO: U13MOlow (CA ≤ 12.7, MO ≤ −1.4), U13MOhigh (CA ≤ 12.7, MO > −1.4), U14MOlow (CA > 12.7, MO ≤ −1.4), U14MOhigh (CA > 12.7, MO > −1.4). The two-factor mixed ANOVA revealed significant (p