{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,17]],"date-time":"2026-04-17T14:21:37Z","timestamp":1776435697342,"version":"3.51.2"},"reference-count":46,"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 &amp; Sports Physical Therapy"],"published-print":{"date-parts":[[2020,8]]},"abstract":"<jats:sec><jats:title>Objective<\/jats:title><jats:p> To compare cross-recurrence quantification analysis measurements obtained during gait between adolescents who sustained a diagnosed concussion within 14 days of assessment and healthy adolescents. <\/jats:p><\/jats:sec><jats:sec><jats:title>Design<\/jats:title><jats:p> Cross-sectional study. <\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p> Youth athletes with concussion (n = 43; mean \u00b1 SD age, 14.4 \u00b1 2.3 years; 56% female; tested median, 7 days post concussion) and healthy controls (n = 38; age, 14.9 \u00b1 2.0 years; 55% female) completed a single-task and dual-task gait protocol while wearing a set of inertial sensors. We used cross-recurrence quantification analysis techniques to quantify the similarity between accelerations obtained from the sensor on the dorsum of each foot. Four outcome variables were compared between groups: percent determinism, average diagonal-line length, laminarity, and trapping time. <\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p> Athletes with concussion had significantly higher percent determinism, laminarity, and trapping time than the control group in single-task and dual-task conditions (P&lt;.05). Gait patterns, when simultaneously completing a secondary cognitive task (dual task), were no different from gait patterns under a single-task condition. <\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p> Higher percent determinism, laminarity, and trapping time among athletes with concussion suggest that concussion may be associated with a more stuck and predictable gait pattern. These altered movement patterns may be one reason for underlying slower gait speeds that have been observed following concussion. J Orthop Sports Phys Ther 2020;50(8):438\u2013446. 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