Comparison of Drop Jump and Tuck Jump Knee Joint Kinematics in Elite Male Youth Soccer Players: Implications for Injury Risk Screening
Lloyd, Rhodri S.
De Ste Croix, Mark
MetadataShow full item record
Context: Despite the popularity of jump-landing tasks being used to identify injury risk factors, minimal data currently exist examining differences in knee kinematics during commonly used bilateral jumping tasks. This is especially the case for rebounding-based protocols involving young athletes. Objective: The purpose of this study was to compare the frontal plane projection angle (FPPA) during the drop vertical jump (DVJ) and tuck jump assessment (TJA) in a cohort of elite male youth soccer players of varying maturity status. Methods: A total of 57 male youth soccer players from an English championship soccer club participated in the study. Participants performed three trials of the DVJ and TJA, during which movement was recorded with two-dimensional video cameras. FPPA for both right (FPPA-r) and left (FPPA-l) legs, with values <180º indicative of medial knee displacement. Results: On a whole-group level, FPPA-r (172.7 ± 7.4 º versus 177.2 ± 11.7 º; p < 0.05; ES = 0.46) and FPPA-l (173.4 ± 7.3 º versus 179.2 ± 11.0 º; p < 0.05; ES = 0.62) was significantly greater for both limbs in the TJA compared to the DVJ; however, these differences were less consistent when grouped by maturity status. FPPA-r during the TJA was significantly and moderately greater in the circa-PHV group compared to the post-PHV cohorts (169.4 ± 6.4 º versus 175.3 ± 7.8 º; p < 0.05; ES = 0.49). Whole group data showed moderate relationships for FPPA-r and FPPA-l between the TJA and DVJ; however, stronger relationships were shown in circa and post-PHV players compared to the pre-PHV cohort. Conclusions: Considering that the TJA exposed players to a larger FPPA and was sensitive to between-group differences in FPPA-r, the TJA could be viewed as a more suitable screen for identifying FPPA in young male soccer players.
Journal of Sport Rehabilitation;
Lloyd, R.S., Oliver, J.L., Myer, G.D., De Ste Croix, M., Wass, J. and Read, P.J. (2019) 'Comparison of Drop Jump and Tuck Jump Knee Joint Kinematics in Elite Male Youth Soccer Players: Implications for Injury Risk Screening', Journal of Sport Rehabilitation, pp.1-20. DOI: 10.1123/jsr.2019-0077.
Article published online ahead of print in Journal of Sport Rehabilitation, available at: https://doi.org/10.1123/jsr.2019-0077.
Cardiff Metropolitan University (Grant ID: Cardiff Metropolian (Internal))
- Import 
Showing items related by title, author, subject and abstract.
Development and validation of a novel movement screen to predict lower extremity injury in male youth soccer players Read, Paul (Cardiff Metropolitan University, 2016)Lower extremity non-contact injuries are common in male youth soccer players. Altered neuromuscular control defined as muscle strength, power or activation patterns that lead to increased joint loads has been suggested as ...
Read, Paul; Oliver, Jon; De Ste Croix, Mark; Myer, Greg; Lloyd, Rhodri S. (Lippincott, Williams & Wilkins, 2016)Altered neuromuscular control has been suggested as a mechanism for injury in soccer players. Ligamentous injuries most often occur during dynamic movements, such as decelerations from jump-landing maneuvers where high ...
Coker, Chelsea (Cardiff Metropolitan University, 2014)The purpose of this study was to investigate the effect score-line has on the work rate of amateur soccer players at university level. Previous literature on the score-line effects on work rate has only investigated elite ...