Single-leg drop landing motor control strategies following acute ankle sprain injury

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Title: Single-leg drop landing motor control strategies following acute ankle sprain injury
Authors: Doherty, Cailbhe
Bleakley, Chris J.
Hertel, Jay
Caulfield, Brian
Ryan, John
Delahunt, Eamonn
Permanent link: http://hdl.handle.net/10197/8309
Date: Aug-2015
Abstract: No research currently exists investigating the effect of acute injury on single-limb landing strategies. The aim of the current study was to analyse the coordination strategies of participants in the acute phase of lateral ankle sprain (LAS) injury. Thirty-seven participants with acute, first-time, LAS and nineteen uninjured participants completed a single-leg drop landing task (DL) on both limbs. 3-dimensional kinematic (angular displacement) and sagittal plane kinetic (moment of force) data were acquired for the joints of the lower extremity, from 200ms pre-initial contact (IC) to 200ms post IC. The peak magnitude of the vertical component of the ground reaction force (GRF) was also computed. Injured participants displayed a bilateral increase in hip flexion, with altered transverse plane kinematic profiles at the knee and ankle for both limbs (p < 0.05). This coincided with a reduction in the net supporting flexor moment of the lower extremity (p < 0.05) and magnitude of the peak vertical GRF for the injured limb (21.82 ± 2.44 N/kg vs 24.09 ± 2.77 N/kg; p = 0.013) in injured participants compared to control participants. These results demonstrate that compensatory movement strategies are utilized by participants with acute LAS to successfully reduce the impact forces of landing.
Funding Details: Science Foundation Ireland
Type of material: Journal Article
Publisher: Wiley
Copyright (published version): 2014 Wiley
Keywords: Personal sensing;Ankle joint;Biomechanics;Kinematics;Kinetics;Task performance and analysis
DOI: 10.1111/sms.12282
Language: en
Status of Item: Peer reviewed
Appears in Collections:Public Health, Physiotherapy and Sports Science Research Collection
Insight Research Collection
Institute for Sport & Health Research Collection

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