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The research purpose was design, assess the validity and reliability of test-retest the Young Futsal Specific Test Battery (YFSTB) to measure the skill performance of young futsal players. YFSTB provided a competency assessment of futsal skills which includes running with the ball, wall pass, checking off (moving without the ball and returning to the ball), dribble with the ball, and shoot in the shooting area. YFSTB’s assessment is based on response time and performance accuracy (errors in doing futsal tests are recorded in the form of time penalties). The 60 young futsal players participated in this study. All participants underwent YFSTB 2 times on 2 different days. Participants also completed a futsal match to assess the players’ technical-tactical behavior in the match. Intraclass correlation (ICC) and paired t-test were used to assess test retest reliability. To assess validity, researchers assessed content validity and construct validity. The results showed that all experts confirmed the content validity with Aiken V > 0.69 (mean Aiken V = 0.80). There was a significant correlation between YFSTB and various aspects of GPET (r = 0.502–0.611; p < 0.05) and contributed 25.2%–37.3% to the technical-tactical behavior of players in matches (R-square = 0.252–0.373). So that confirms the construct validity. In addition, a significant strong correlation was observed between the YFSTB test and retest (r = 0.981; ICC = 0.980; 95% Confidence Interval (CI) = 0.966–0.988) and no difference was observed in player performance in the YFSTB test and retest (p value > 0.05). So it can be concluded that YFSTB can be used to assess the skill performance of young futsal players in relation to the players’ technical-tactical behavior during matches.
