We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
IMPAIRED EYE TRACKING IS ASSOCIATED WITH SYMPTOMS BUT NOT DYNAMIC POSTURAL CONTROL IN ADOLESCENTS FOLLOWING CONCUSSION.
- Authors
Oldham, Jessie R.; Meehan, William P.; Howell, David R.
- Abstract
Background: Visual impairments are common following concussion, and vision tests are recommended as part of a comprehensive clinical concussion evaluation. Persistent symptoms from vision disturbances can delay recovery and earlier detection may reduce symptom burden. Further, while gait‐related deficits were reported among adolescents with abnormal near point of convergence following concussion, further research is needed to understand gait performance among those with impaired eye tracking abilities. Hypothesis/Purpose: Our purposes were to: 1) examine the relationship between self‐reported symptoms and concussion‐related visual impairments; and 2) compare single‐task and dual‐task gait speed between concussed adolescents with and without abnormal visual tracking abilities, to healthy controls. Methods: Thirty concussed participants and thirty healthy controls (Table 1) completed an eye tracking assessment during which they watched a brief (220s) video clip. The video clip moved in a clockwise direction around the screen while pupil positions were measured with an objective eye tracker to create a box trajectory of each eye movement. The eye tracking dependent variable (BOX score) was a binary classifier with <10 being classified as normal and ≥10 abnormal. Symptoms were collected using the Post‐Concussion Symptom Scale (PCSS), and gait speed was measured with three triaxial accelerometers placed on the dorsal side of each foot and L5. Participants walked along a 10‐m walkway, turned, and returned to the starting point at a self‐ selected pace. During dual‐task trials, participants simultaneously answered cognitive questions (spelling backwards, serial 6s or 7s, reciting months backwards) while walking. We conducted a linear regression to examine the relationship between PCSS and BOX scores and a two‐way mixed effects analysis of variance followed by a Tukey post‐hoc to examine the effect of group (abnormal BOX, normal BOX, and healthy control) on single and dual‐task gait speed. Results: There was a significant association between total PCSS score and BOX score (Figure 1). There were no significant differences in single‐task or dual‐task gait speed between the groups. (Figure 2)
- Subjects
ARIZONA; BRAIN concussion; CONFERENCES &; conventions; POSTURAL balance; SELF-evaluation; VISION testing; VISION disorders; EYE movement measurements; WALKING speed; DISEASE complications; SYMPTOMS; ADOLESCENCE
- Publication
Orthopaedic Journal of Sports Medicine, 2020, Vol 8, p206
- ISSN
2325-9671
- Publication type
Article
- DOI
10.1177/2325967120S00217