Hanzlíková, IvanaAthens, JosieHébert-Losier, Kim2026-06-102026-06-102020-07Hanzlíková, I., Athens, J., & Hébert-Losier, K. (2020). Clinical implications of Landing Error Scoring System calculation methods. Physical Therapy in Sport, 44, 61-66. https://doi.org/10.1016/j.ptsp.2020.04.0351466-853Xhttps://hdl.handle.net/10289/18339Objectives: To explore whether final Landing Error Scoring System (LESS) scores differ between calculation methods used in literature. Design: Cross-sectional. Setting: Laboratory. Participants: 328 individuals. Main outcome measures: LESS scores from 984 drop-jumps were extracted. Final LESS scores were calculated for every participant according to five methods: mean of 3 jumps, 1st jump score, 3rd jump score, best jump score, and sum of errors present in at least 2 jumps. The influence of the calculation method on group mean LESS score and group-level risk categorization using threshold of 5 errors was estimated using Generalized Estimating Equations, with the mean of 3 jumps score set as the reference method. The agreement in individual-level risk categorization was assessed using odds ratios and McNemar's tests. Results: Compared to the reference, estimated group mean LESS score was 0.92 errors lower (p < 0.001) using the best jump method, as was group-level risk categorization (odds ratio: 0.50, p < 0.001). Individual-level risk categorization between calculation methods was inconsistent for 8–15% of participants compared to the reference method, significantly different from reference for the best jump score method (p < 0.001). Conclusions: Calculation method meaningfully influences final LESS scores and risk categorization.enThis is an authors accepted version of an article published in the journal Physical Therapy in Sport. © 2020 Elsevier.injury riskjump-landing biomechanicsmovement screenscience & technologylife sciences & biomedicinerehabilitationsport sciencesinjury-prevention programneuromuscular training-programscreening toolperformanceimprovementsbiomechanicsretentionstabilitymechanicsstrengthJournal Article10.1016/j.ptsp.2020.04.0351873-16004203 Health Services and Systems