Treffer: Psychometric Properties of the Basketball Throw Test as a Health-Related Field-Based Measure of Muscular Strength for Use With Adolescents in School Settings.

Purpose: This study evaluated the objectivity, test/retest reliability, and validity of the Basketball Throw Test (BTT) test administered in the school setting by physical education teachers for assessing the upper-body muscular strength in adolescents and its relationship with body mass index. Method: Four hundred and seventy Algerian adolescents (223 males and 247 females; mean age = 14.71 ± 1.95 years) performed the BTT on two occasions and the handgrip test (criterion). Convergent reliability was estimated using an intraclass correlation coefficient (ICC<subscript>2,1</subscript>) and graphically examined following the Bland–Altman approach. Pearson correlation coefficient employed to determine validity. Results: The BTT demonstrated excellent objectivity ICC<subscript>2,1</subscript> =.963 (95% confidence interval [.948,.973]) and test–retest reliability ICC<subscript>2,1</subscript> with values from.994 to.997 (95% confidence interval [.992,.997]). The Bland–Altman plot confirmed reliability results. The BTT was positively correlated with handgrip test (r =.75, p <.001). Conclusion: The BTT is an objective, valid, and reliable measure of adolescents' upper-body muscular strength [ABSTRACT FROM AUTHOR]

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