Reliability of Kicking Speed and Accuracy in Youth Soccer Players (Raw Data and Analysis Code)

This repository contains anonymised data (Excel) and MATLAB analysis scripts associated with the unpublished study 'Test–retest reliability of kicking performance assessments over a 2-day interval in elite youth soccer players' (Carstensen & Andersen, 2025). The dataset includes participant maximal kicking speed (m/s), accuracy (m), and error ellipse parameters. MATLAB scripts reproduce the reliability analyses (ICC, limits of agreement, Bland-Altman plots) as well as paired t-tests.