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IntroductionĪnnually, 80,000 anterior cruciate ligament (ACL) injuries occur in the United States with an estimated cost of almost a billion dollars. TJA instructions and training should be modified and enhanced before clinical implementation. There may be a learned effect with the TJA since interrater reliability improved with repetition.
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Published protocol and training of raters were insufficient to allow consistent TJA scoring. Interrater reliability between 3 raters who completed 2 scoring sessions improved from 0.52 (95% CI 0.35–0.68) for session one to 0.69 (95% CI 0.55–0.81) for session two. Interrater reliability with 5 raters was poor (ICC = 0.47 95% confidence intervals (CI) 0.33–0.62). Intraclass correlation coefficients determined interrater (5 and 3 raters for first and second session, resp.) and intrarater (3 raters) reliability. Approximately one month later, 3 raters scored the videos again. Each score of the 10 technique flaws was summed for the total TJA score. Five raters of varied educational and clinical backgrounds scored the TJA. 40 participants were video recorded performing the TJA using published protocol and instructions.
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The study objective was to investigate TJA interrater and intrarater reliability with raters of different educational and clinical backgrounds. The Tuck Jump Assessment (TJA), a clinical plyometric assessment, identifies 10 jumping and landing technique flaws.
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