Residual deficits in reactive strength indicate incomplete restoration of athletic qualities following anterior cruciate ligament reconstruction in professional soccer players

Read, Paul J, Davies, William T., Bishop, Chris, Mc Auliffe, Sean, Wilson, Mathew G. and Turner, Anthony N. (2020) Residual deficits in reactive strength indicate incomplete restoration of athletic qualities following anterior cruciate ligament reconstruction in professional soccer players. Journal of Athletic Training. doi:10.4085/169-20 (In Press)

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Abstract

Context: Deficits in plyometric abilities are common following anterior cruciate ligament reconstruction (ACLR). Vertical rebound tasks may provide a targeted evaluation of knee function. Objective: Examine the utility of a vertical hop test to assess function following ACLR and establish factors associated with performance. Design: Cross-sectional Setting: Rehabilitation Participants: Soccer players with a history of ACLR (N = 73) and matched controls (N = 195) Main outcome measures: 10 second vertical hop test including measures of jump height, reactive strength index (RSI) and asymmetry. We also examined possible predictors of hop performance including single leg vertical drop jump (SLDVJ), isokinetic knee extension strength, and the international knee documentation committee questionnaire. Results: Significant between-limb differences were identified for the ACLR group only and asymmetry scores increased in those with a history of ACLR (P < 0.001) compared to controls. SLDVJ RSI and knee extension torque were significant predictors of 10 second hop height (R2 = 20.1%) and RSI (R2 = 47.1%). Conclusions: Vertical hop deficits are present following ACLR even after completing a comprehensive rehabilitation program. This may be due to reduced knee extension and reactive strength. Vertical hop tests warrant inclusion as part of return to sport test battery.

Item Type: Article
Article Type: Article
Uncontrolled Keywords: ACL; Reactive Pain Index; Plyometrics; Movement assessment; Return-to-sport
Subjects: G Geography. Anthropology. Recreation > GV Recreation Leisure > GV557 Sports
R Medicine > RC Internal medicine > RC1200 Sports Medicine
Divisions: Schools and Research Institutes > School of Sport and Exercise > Applied Sport & Exercise Sciences
Research Priority Areas: Sport, Exercise, Health & Wellbeing
Depositing User: Rhiannon Goodland
Date Deposited: 11 Nov 2020 15:29
Last Modified: 11 Nov 2020 15:30
URI: http://eprints.glos.ac.uk/id/eprint/8976

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