• J Sci Med Sport · May 2019

    Objective clinical tests of dual-task dynamic postural control in youth athletes with concussion.

    • David R Howell, Julie C Wilson, Anna N Brilliant, Andrew J Gardner, Grant L Iverson, and William P Meehan.
    • Sports Medicine Center, Children's Hospital Colorado, USA; Department of Orthopedics, University of Colorado School of Medicine, USA; The Micheli Center for Sports Injury Prevention, USA. Electronic address: David.Howell@ucdenver.edu.
    • J Sci Med Sport. 2019 May 1; 22 (5): 521-525.

    ObjectivesTo prospectively evaluate single/dual-task timed-up-and-go (TUG) and tandem gait performance among children and adolescents with concussion and healthy controls.DesignRepeated measures.MethodsParticipants with concussion (n=23; age=14.1±2.5years; 52% female) completed single/dual-task TUG, tandem gait, and symptom assessments 6.7±2.6 and 23.3±6.1days post injury. The control group (n=27; age=14.1±2.3years; 48% female) completed the same protocol initially and 10.7±16.1days later. All participants completed single-task (undivided attention) and dual-task (divided attention) tests. The primary outcome variable was test completion time.ResultsThe concussion group completed single-task (concussion group mean=11.1±1.9 vs. control group mean 9.9±1.4s, p=0.027) and dual-task (concussion group mean=14.4±3.3 vs. control group mean 12.7±1.9s, p=0.047) TUG tests slower than the control group across both time points. The concussion group completed dual-task tandem gait tests slower than the control group at both time points (21.3±6.3 vs. 16.8±5.5s, p=0.006), and were slower in the single-task condition at the first test (19.8±5.4 vs. 13.8±4.4s, p=0.003). Symptoms were significantly worse for the concussion group compared to the control group at the first (34.1±21.4 vs. 3.9±9.1, p<0.001), but not the second test (9.1±12.0 vs. 2.2±6.8; p=0.08).ConclusionsSlower dual-task TUG and tandem gait times were detected across both time points for the concussion group relative to the control group. In contrast, single-task tandem gait deficits appeared to improve in a similar fashion as symptoms, suggesting increased complexity from the addition of a cognitive task allows for the detection of persistent post-concussion deficits that might take longer to resolve.Copyright © 2018 Sports Medicine Australia. Published by Elsevier Ltd. All rights reserved.

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