Dynamic Balance Deficits 6 Months Following First-Time Acute Lateral Ankle Sprain: A Laboratory Analysis

C Doherty, Chris M Bleakley, J Hertel, B Caulfield

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    40 Citations (Scopus)


    ABSTRACT: Study Design Controlled laboratory study. Objective To utilize kinematic and stabilometric measures to compare dynamic balance during performance of the Star Excursion Balance Test (SEBT) between persons 6-months post first-time lateral ankle sprain (LAS) and a non-injured control group. Background Biomechanical evaluation of dynamic balance in persons following first-time LAS during SEBT performance could provide insight into the mechanism(s) by which individuals proceed to recover fully, or develop chronic ankle instability. Methods Sagittal-plane kinematics of the lower extremity and the center of pressure (COP) path during the performance of the anterior (ANT), posterior-lateral (PL) and posterior-medial (PM) reach directions of the SEBT were obtained from 69 participants, 6 months following first-time acute LAS. Data also were obtained from 20 non-injured controls. Results The LAS group displayed lower normalized reach distances in all 3 reach directions compared to control participants on their injured and non-injured limbs with the largest observed effect size in the PL direction (p = 0.001, ηp(2) = 0.07). The performance impairment was associated with less hip and knee flexion and ankle dorsiflexion at the point of maximum reach (p
    Original languageEnglish
    JournalJ Orthop Sports Phys Ther
    Volume24 Jun
    Publication statusPublished (in print/issue) - 24 Jun 2015


    • ankle sprain
    • chronic ankle instability
    • copers
    • dynamic balance


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