ASB clinical biomechanics award winner 2016: Assessment of gaze stability within 24–48 hours post-concussion
| Autor: | Douglas W. Powell, Barry A. Munkasy, Nathan D’Amico, Russell K. Gore, Megan E. Mormile, Katelyn E. Grimes, Rebecca J. Reed-Jones, Nicholas G. Murray |
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| Rok vydání: | 2017 |
| Předmět: |
Adult
Male medicine.medical_specialty Heading (navigation) Eye Movements genetic structures Awards and Prizes Biophysics Fixation Ocular Young Adult 03 medical and health sciences 0302 clinical medicine Physical medicine and rehabilitation Risk Factors Concussion medicine Humans Orthopedics and Sports Medicine Brain Concussion Eye tracking on the ISS Monocular biology Athletes Biomechanics Reflex Vestibulo-Ocular 030229 sport sciences medicine.disease biology.organism_classification Gaze Biomechanical Phenomena Athletic Injuries Physical therapy Female Vestibulo–ocular reflex Psychology 030217 neurology & neurosurgery |
| Zdroj: | Clinical Biomechanics. 44:21-27 |
| ISSN: | 0268-0033 |
| DOI: | 10.1016/j.clinbiomech.2017.03.002 |
| Popis: | Approximately 90% of athletes with concussion experience a certain degree of visual system dysfunction immediately post-concussion. Of these abnormalities, gaze stability deficits are denoted as among the most common. Little research quantitatively explores these variables post-concussion. As such, the purpose of this study was to investigate and compare gaze stability between a control group of healthy non-injured athletes and a group of athletes with concussions 24-48hours post-injury.Ten collegiate NCAA Division I athletes with concussions and ten healthy control collegiate athletes completed two trials of a sport-like antisaccade postural control task, the Wii Fit Soccer Heading Game. During play all participants were instructed to minimize gaze deviations away from a central fixed area. Athletes with concussions were assessed within 24-48 post-concussion while healthy control data were collected during pre-season athletic screening. Raw ocular point of gaze coordinates were tracked with a monocular eye tracking device (240Hz) and motion capture during the postural task to determine the instantaneous gaze coordinates. This data was exported and analyzed using a custom algorithm. Independent t-tests analyzed gaze resultant distance, prosaccade errors, mean vertical velocity, and mean horizontal velocity.Athletes with concussions had significantly greater gaze resultant distance (p=0.006), prosaccade errors (p0.001), and horizontal velocity (p=0.029) when compared to healthy controls.These data suggest that athletes with concussions had less control of gaze during play of the Wii Fit Soccer Heading Game. This could indicate a gaze stability deficit via potentially reduced cortical inhibition that is present within 24-48hours post-concussion. |
| Databáze: | OpenAIRE |
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