Acceleration-Speed Profile as a Framework for Individualized Speed Training in Soccer

ABSTRACT The ability to accelerate rapidly and reach high maximal speeds is essential for soccer performance. The Acceleration-Speed (A-S) profile provides an efficient method to assess these capabilities through continuous monitoring during training sessions. This article introduces a novel four-quadrant profiling system based on A-S profile parameters—maximal theoretical acceleration (A0) and speed (S0)—to categorize athletes and inform individualized training strategies. Each quadrant reflects distinct performance characteristics, allowing practitioners to tailor interventions accordingly. To enhance diagnostic precision, the model integrates complementary strength and power assessments (e.g., countermovement jump, depth jump, sprint times) that reveal underlying physical limitations. Practical training recommendations are presented for each quadrant across 3 levels: gym-based, sprint-specific, and soccer-specific drills. The framework also facilitates athlete comparison across age groups, playing positions, and longitudinal development, providing actionable insights for talent identification and performance optimization. This integrated approach supports evidence-based decision making and promotes individualized player development in elite soccer environments. Future research should examine the long-term impact of quadrant-specific interventions and validate physical benchmarks across soccer populations.