This assignment presents a detailed analysis of the potential effect of relative prowler sprints on unresisted 20m sprint performance. The study utilizes Cohen's d to determine the effect size of different prowler sprint protocols (50%, 75%, and 125% resistance) on 20m sprint times over three weeks. The results are presented in tables, showing baseline performance and changes at 8m and 12m intervals. The effect sizes are categorized as trivial, small, medium, large, and very large, based on Cohen's d magnitude. The analysis aims to quantify how different intensities of prowler training affect sprint performance, providing insights into the efficacy of this training method. The document provides a comprehensive overview of the data and its interpretation.