Validation on Talent Selection Criteria for High School Football Central Defenders Based on A Multidimensional Evaluation System

Abstract

This study further validates the previously established selection indicator system for high school soccer central defenders. For each evaluation indicator, a corresponding test was designed; for example, the Illinois Agility Test was used for the testing agility. An online research method was employed to reference authoritative scoring standards, such as those in Physical Education and the Study of Sport. The percentage conversion method was used to convert raw scores into a percentage scale. The expert scoring method involved inviting professional coaches to evaluate players during seven-a-side matches. Three high school central defenders were selected: Student Wang achieved a final score of 72.2102 points, Student Xue obtained 75.2710 points, and Student Zhao scored 78.5893 points. The players with the higher final scores, Student Zhao and Student Xue, were starters on their team in reality; the player with the lower final score, Student Wang, was a substitute on his team. This finding confirms the validity and reliability of the model.