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Presentation
Assessment of Anti-Saccades within 24 to 48 Hours Post-Concussion
South East Regional Meeting of the American College of Sports Medicine (2016)
  • Nathan D’Amico, Georgia Southern University
  • Megan E. Mormile, Georgia Southern University
  • K. M. Ake, Georgia Southern University
  • K. Grimes, Georgia Southern University
  • D. W. Powell, Campbell University
  • Rebecca J. Reed-Jones, University of Prince Edward Island
  • Nicholas G. Murray, Georgia Southern University
Abstract
PURPOSE: To investigate anti-saccades, involuntary gaze deviations from a fixed point or area of interest, between NCAA Division I athletes 24 to 48 hours post-concussion (PC) and healthy athletes (NC) during a dynamic balance assessment, the Nintendo WiiFit Soccer Heading game (WFS). METHODS: 6 PC (age: 19.8 ± 0.8 years) and 6 position and gender matched NC (age: 18.5 ± 0.8 years) wore a monocular eye tracking device while performing 2 trials of the WFS. During play participants were instructed not to deviate their gaze from the center fixed area of interest. Ocular raw point of gaze coordinates were tracked during play for specific areas of interest (left, right, and center) to determine gaze deviations away from the center fixed area of interest. RESULTS: One-way ANOVAs revealed significantly greater anti-saccades (p=0.031) in the PC group (15.2 ± 7.1) when compared to the NC group (5.4 ± 5.2), significantly greater antisaccade duration (p=0.023) in the PC group (11.2 ± 8.8 sec) when compared to the NC group (1.2 ± 1.3 sec), and significantly greater average anti-saccade duration (p < .001) in the PC group (0.671 ± .205 sec) when compared to the NC group (0.133 ± .042 sec). CONCLUSIONS: These results suggest that anti-saccades are significantly more prevalent in PC compared to NC within 24 to 48 hours of injury. Furthermore, PC are unable to appropriately control gaze during an environmentally relevant dynamic balance assessment such as the WFS. This could imply a major deficiency in oculomotor control within these injured athletes. The greater number and duration of anti-saccades could suggest a potential oculomotor impairment within 24 to 48 hours post-injury and could be a candidate marker for concussion.
Keywords
  • Anti-saccades,
  • Post-concussion,
  • Athletes,
  • Dynamic balance assessment
Publication Date
February, 2016
Location
Greenville, SC
Citation Information
Nathan D’Amico, Megan E. Mormile, K. M. Ake, K. Grimes, et al.. "Assessment of Anti-Saccades within 24 to 48 Hours Post-Concussion" South East Regional Meeting of the American College of Sports Medicine (2016)
Available at: http://works.bepress.com/nicholas-murray/39/