Lower extremity coordination and symmetry patterns during a drop vertical jump task following acute ankle sprain

Doherty, CailbheCailbheDohertyBleakley, Chris J.Chris J.BleakleyHertel, JayJayHertelSweeney, Kevin T.Kevin T.SweeneyCaulfield, BrianBrianCaulfieldRyan, JohnJohnRyanDelahunt, EamonnEamonnDelahunt2017-04-192017-04-192014 Elsev2014-12Human Movement Sciencehttp://hdl.handle.net/10197/8438Purpose: Evaluate the potentially adaptive movement patterns associated with acute lateral ankle sprain (LAS) using biomechanical analyzes. Methods: Thirty participants with acute LAS and nineteen controls performed a drop vertical jump (DVJ) task. 3D kinematic and sagittal plane kinetic profiles were plotted for the hip, knee and ankle joints of both limbs for the drop jump (phase 1) and drop landing (phase 2) phases of the DVJ. Inter-limb symmetry and the rate of force development (RFD) relative to bodyweight (BW) during both phases of the DVJ were also determined. Results: The LAS group displayed reduced ankle plantar-flexion on their injured limb during phase 2 of the DVJ, with greater associated inter-limb asymmetry for this movement (p < .05). The LAS group also displayed altered kinetic profiles, with increased inter-limb hip asymmetry for both phases of the DVJ (p < .05). This was associated with a decrease in the LAS participants’ injured limb RFD during phase 2 of the DVJ when compared with that of controls (11.76 ± 3.43 BW/s vs 14.60 ± 3.20 BW/s; p = .01, η2 = 0.14). Conclusion: Participants with LAS display potentially aberrant coordination strategies during a DVJ as evidenced by an increased dependence on the non-injured limb.enThis is the author’s version of a work that was accepted for publication in Human Movement Science. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Human Movement Science (VOL 38, ISSUE 2014, (2014)) DOI: 10.1016/j.humov.2014.08.002.Personal sensingAnkle jointBiomechanicsKinematicsTask performance and analysisLower extremity coordination and symmetry patterns during a drop vertical jump task following acute ankle sprainAcute ankle sprain alters lower extremity coordination and symmetry patterns during a drop vertical jump taskJournal Article38344610.1016/j.humov.2014.08.0022015-03-05https://creativecommons.org/licenses/by-nc-nd/3.0/ie/