ITRACKING ASSOCIATE CEDAR FALLS TRIAL
The mean ± SD of the differences for the total number of saccades was 1.04 ± 4.01 and there was an observable difference (p = 0.005) in the trial number. The test-retest reliability of the K-D ET ranged from good to excellent for the different variables measured. Both groups completed a baseline K-D ET measurement and then either two 10-min exercise or sedentary interventions with repeated K-D ET measurements between interventions. Participants (N = 61 26 male, 35 female age range 19-25) were allocated to an exercise or sedentary group.
Therefore, the aim was to provide evidence on the reliability of the K-D ET system under an exercise condition. The King-Devick test (K-DT) was expanded to include an infrared video-oculography-based eye tracker (K-D ET). Other than completion time of the K-D ET test, no K-D ET oculomotor parameter was highly sensitive or specific in the diagnosis of concussion in this study.Įye tracking has been gaining increasing attention as a possible assessment and monitoring tool for concussion. No other variables reported high sensitivity or specificity. The K-D ET test duration indicated high specificity (0.86) but not high sensitivity (0.40). No significant Group × Time interactions were noted. Sex-based differences were noted for total fixations ( P =. 030), with differences from baseline to follow-up observed for saccade velocity ( P =. Significant differences were observed between concussed and nonconcussed groups for total saccades ( P =. In addition, the different components of diagnostic accuracy of the K-D ET were calculated.īaseline K-D ET assessment for 49 participants (25 male, 24 female) were assessed at the beginning of the season, with 28 participants who did not sustain a head injury during the season completing the postseason assessments and 6 participants completing a postinjury (suspected concussion) assessment. A generalized estimating equation was used to examine group (concussion vs nonconcussion), time (baseline vs postinjury/postseason), and sex-based differences for each outcome measure.
Variables assessed were total saccades, saccade velocity, total fixations, fixation duration, fixation polyarea, and test duration. One female and 1 male team of United States collegiate rugby-15 players competing during the 2018 season were recruited. To determine the diagnostic accuracy of a rapid number-naming task with eye tracking, the King-Devick Eye Tracking (K-D ET) assessment, in identifying SRC. Eye-tracking technology for detecting eye movements has been gaining increasing attention as a possible assessment and monitoring tool for sport-related concussion (SRC).
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