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Methodological Insights Into the Acceleration-Speed Profile: Optimizing Data Analysis for Reliable Application in

Antonio Alonso-Callejo¹, Jose Maria Manzano², Jorge Garcia-Unanue¹

¹IGOID Research Group, Department of Physical Activity and Sport Sciences, University of Castilla-La Mancha, Toledo, Spain.

International Journal of Sports Physiology and Performance

|November 9, 2025

Summary

The most reliable acceleration-speed profiles for elite football players are achieved using two consecutive microcycles, each with at least five sessions and a match day. This method enhances in situ sprint profiling for performance monitoring.

Keywords:

elite soccer sprint testing validity

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Area of Science:

Sports Science
Biomechanics
Performance Analysis

Background:

The acceleration-speed profile is crucial for understanding sprint performance in elite athletes.
Assessing the reliability of this profile across competitive seasons is vital for effective training.
Microcycle structure and content can influence the stability of performance metrics.

Purpose of the Study:

To evaluate the reliability of the acceleration-speed profile in elite male and female football players.
To determine how microcycle characteristics (number and type) affect the reliability of theoretical maximal acceleration (A0) and speed (S0).

Main Methods:

GPS-derived acceleration and speed data were analyzed from 181 women's and 146 men's microcycles.
Acceleration-speed profiles were constructed using overlapping windows of 1–5 microcycles, categorized as competitive (including match day) or noncompetitive.
Linear regressions were used to estimate A0 and S0.

Main Results:

Theoretical maximal acceleration (A0) and speed (S0) increased with microcycle length, plateauing beyond five days.
The highest reliability for both A0 and S0 was observed when grouping two consecutive microcycles.
Competitive profiles demonstrated superior stability and signal quality compared to noncompetitive profiles, with male players showing lower variability than female players.

Conclusions:

Optimal reliability for acceleration-speed profiles is achieved with two consecutive microcycles, each containing five or more sessions and at least one match day.
These findings enable the integration of in situ sprint profiling into performance monitoring, reducing the need for isolated testing.
The study provides practical insights for coaches and sports scientists to optimize performance assessment in football.