Jessie R Oldham1, David R Howell2, Kelsey N Bryk3, Corey J Lanois4, Inga K Koerte5, William P Meehan6, Thomas A Buckley3. 1. The Micheli Center for Sports Injury Prevention, Waltham, MA, USA; Division of Sports Medicine, Department of Orthopedics, Boston Children's Hospital, Boston, MA, USA. Electronic address: Jessie.Oldham@childrens.harvard.edu. 2. Sports Medicine Center, Children's Hospital Colorado, Aurora, CO, USA; Department of Orthopedics, University of Colorado School of Medicine, Aurora, CO, USA. 3. Department of Kinesiology and Applied Physiology, University of Delaware, Newark, DE, USA; Interdisciplinary Program in Biomechanics and Movement Science, University of Delaware, Newark, DE, USA. 4. The Micheli Center for Sports Injury Prevention, Waltham, MA, USA; Division of Sports Medicine, Department of Orthopedics, Boston Children's Hospital, Boston, MA, USA. 5. Department of Child and Adolescent Psychiatry, Psychomatic and Psychotherapy, Ludwig-Maximilians-Universität, Munich, Germany; Department of Psychiatry, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA. 6. The Micheli Center for Sports Injury Prevention, Waltham, MA, USA; Division of Sports Medicine, Department of Orthopedics, Boston Children's Hospital, Boston, MA, USA; Department of Pediatrics and Orthopedics, Harvard Medical School, Boston, MA, USA.
Abstract
OBJECTIVES: To test whether 1) concussed athletes demonstrate slower tandem gait times compared to controls and 2) concussed female athletes display greater post-injury deficits than males. DESIGN: Prospective longitudinal METHOD: Fifty concussed collegiate student-athletes (32% female, age=20.18±1.27 years) completed tandem gait tests during pre-season (Time 1) and acutely (<72hours) post-concussion (Time 2), and twenty-five controls (52% female, age=21.08±2.22 years) completed tandem gait at two time points, 1.96±0.46 days apart. Participants completed four single-task (ST) and dual-task (DT) trials. During DT trials, they simultaneously completed a cognitive assessment. The best ST and DT times were recorded, along with cognitive accuracy, and the change score between the two assessments was calculated. A positive change in tandem gait time was indicative of worsening performance. A 2×2 (group*sex) ANOVA was used to examine change between pre-injury and post-injury tests for ST/DT tandem gait time and DT cognitive accuracy. RESULTS: The change in tandem gait time from Time 1 to Time 2 was significantly higher for the concussion group relative to controls during both ST (Concussion: 1.36±2.6 seconds, Controls: -1.16±0.8 seconds, p<0.001) and DT (Concussion: 1.70±3.8 seconds, Controls: -0.94±1.7 seconds, p=0.002) tandem gait. There were no interactions or main effects of sex for tandem gait time or cognitive accuracy. CONCLUSIONS: There were no sex-specific differences in the change in tandem gait performance among concussed collegiate athletes or controls. However, all concussed participants, regardless of sex, performed significantly worse on tandem gait than male and female controls, who both improved between testing time points.
OBJECTIVES: To test whether 1) concussed athletes demonstrate slower tandem gait times compared to controls and 2) concussed female athletes display greater post-injury deficits than males. DESIGN: Prospective longitudinal METHOD: Fifty concussed collegiate student-athletes (32% female, age=20.18±1.27 years) completed tandem gait tests during pre-season (Time 1) and acutely (<72hours) post-concussion (Time 2), and twenty-five controls (52% female, age=21.08±2.22 years) completed tandem gait at two time points, 1.96±0.46 days apart. Participants completed four single-task (ST) and dual-task (DT) trials. During DT trials, they simultaneously completed a cognitive assessment. The best ST and DT times were recorded, along with cognitive accuracy, and the change score between the two assessments was calculated. A positive change in tandem gait time was indicative of worsening performance. A 2×2 (group*sex) ANOVA was used to examine change between pre-injury and post-injury tests for ST/DT tandem gait time and DT cognitive accuracy. RESULTS: The change in tandem gait time from Time 1 to Time 2 was significantly higher for the concussion group relative to controls during both ST (Concussion: 1.36±2.6 seconds, Controls: -1.16±0.8 seconds, p<0.001) and DT (Concussion: 1.70±3.8 seconds, Controls: -0.94±1.7 seconds, p=0.002) tandem gait. There were no interactions or main effects of sex for tandem gait time or cognitive accuracy. CONCLUSIONS: There were no sex-specific differences in the change in tandem gait performance among concussed collegiate athletes or controls. However, all concussed participants, regardless of sex, performed significantly worse on tandem gait than male and female controls, who both improved between testing time points.
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