Training and fitness variability in elite youth soccer

Research within sport science disciplines seeks to enhance performance via the combination of factors that influences team’s periodization. The current study aimed investigate variations in training load (TL), and consequential changes fitness variables, based on use match difficulty prediction model (MDP), level opposition (LOP), days between matches, location during 12 weeks competitive period I. Seventeen elite soccer players (age = 17.57 ± 0.49 years; body height 1.79 0.05 m; weight 72.21 6.96 kg), have completed a Yo-Yo intermittent recovery test, running-based anaerobic sprint soccer-specific repeated ability, vertical jump test identify fitness. TL was determined by multiplying RPE session its duration minutes (s-RPE). Training monotony, strain, acute:chronic workload ratio (ACWR) were also assessed. A simple regression conducted highest variances explained (R2) used. LOP score most variance ACWR (r= 0.606, R2=0.37). declined significantly when compared match-day first three last week. No significant difference found s-RPE high low MDP factor. Strong negative correlations reported (r=-0.714, p<.01). In addition, we improvement aerobic variables pre- post-test fatigue index (d=1.104), best testing time, ideal total time mean-best (d=0.518-0.550), (p<.05), respectively. could facilitate prescription as well distribution intensities with specificity, providing long-term youth player’s development allowing teams maintain optimal leading into more difficult matches.