Inter-tester reliabilitet på screening av danserne ved Nasjonalballetten i Norge - En tverrsnittstudie

Objective Dancers are highly prone to injuries. Little research has been done on dancers compared to other athletes, and the few studies done often have poor quality. Screening of athletes was introduced to assess risk factors for injury and is seen as a preventive measure. The health team supporting the athletes often consists of multiple people with various experience and backgrounds. This is the reason why it is important that the screening-battery they use show good intertester reliability. Research question What is the intertester reliability of a set of tests often used in screening of athletes; Functional Movement Screen (FMS), Star Excursion Balance Test (SEBT) and Lunge Lean (LL)? Methods This cross-sectional study randomized 21 dancers (9 female, 12 male, mean age 30,1 ± 6,1) from a larger project to be tested in two test-rounds by two testers. The results from FMS and LL were analysed with kappa, SEBT was analysed with Intraclass correlation coefficient (ICC). Results The study found varying results. Weighted kappa in FMS was from negative (-0,05) to substantial (0,61) reliability. LL results for non-weighted kappa was from negative (-0,30) to moderate (0,46) reliability. SEBT had the best results with ICC-values from moderate (0,50) to almost perfect (0,84) reliability. Conclusion Relatively low kappa-values imply that FMS and LL should be used with caution. The study found good intertester reliability with use of SEBT. There are however, factors that could have affected the reliability of this study, such as time between tests. To further enhance intertester reliability, future research should include improved standardization and training of test-personnel