{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,29]],"date-time":"2026-09-29T06:10:01Z","timestamp":1790662201978,"version":"4.1.0"},"reference-count":37,"publisher":"Journal of Orthopaedic & Sports Physical Therapy (JOSPT)","issue":"8","content-domain":{"domain":["www.jospt.org"],"crossmark-restriction":true},"short-container-title":["Journal of Orthopaedic & Sports Physical Therapy"],"published-print":{"date-parts":[[2015,8]]},"abstract":"Study Design<\/jats:title> Controlled laboratory study. <\/jats:p><\/jats:sec>Objective<\/jats:title> To utilize kinematic and stabilometric measures to compare dynamic balance during performance of the Star Excursion Balance Test between persons 6 months following first-time lateral ankle sprain (LAS) and a noninjured control group. <\/jats:p><\/jats:sec>Background<\/jats:title> Biomechanical evaluation of dynamic balance in persons following first-time LAS during performance of the Star Excursion Balance Test could provide insight into the mechanisms by which individuals proceed to recover fully or develop chronic ankle instability. <\/jats:p><\/jats:sec>Methods<\/jats:title> Sagittal plane kinematics of the lower extremity and the center-of-pressure path during the performance of the anterior, posterolateral, and posteromedial reach directions of the Star Excursion Balance Test were obtained from 69 participants 6 months following first-time acute LAS and from a control group of 20 noninjured participants. <\/jats:p><\/jats:sec>Results<\/jats:title> Compared to the control group, the LAS group displayed lower normalized reach distances in all 3 reach directions on the injured and noninjured limbs, with the largest observed effect size in the posterolateral direction (P = .001, \u03b7p<\/jats:sub>2<\/jats:sup> = 0.07). The performance impairment was associated with less hip and knee flexion and ankle dorsiflexion at the point of maximum reach (P<.02), and coincided with less complexity of the center-of-pressure path (P<.05). <\/jats:p><\/jats:sec>Conclusion<\/jats:title> Participants with a 6-month history of LAS exhibit a persistence of deficits previously established in the acute phase of injury. J Orthop Sports Phys Ther 2015;45(8):626\u2013633. 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