Sensorimotor Training for Injury Prevention in Collegiate Soccer Players II

Traumatic injuries (concussion and leg injuries) across the 2019 soccer season/ number of countable athletic exposures

Game performance will be analyzed through video recording of the 2019 season's games and analysis of performance metrics (performed by InStat). Key performance indices (with higher scores reflecting better performance during game play) will be used as the metric of game performance.

Standing balance (as measured on the Sway balance app 0 - 100 scale)

Reaction time (as measured on the Sway balance app) including impulse control; inspection time; and simple reaction time

Accuracy and latency of saccadic eye movements and smooth pursuit eye movements in response to an object presented to the participant on a computer screen (as measured by the Tobii eye tracker)

Distance of point of near-binocular convergence (as measured in centimeters)

Cranial-cervical flexion neuromotor control (as measured by performance on the Cranial Cervical Flexion Test, mmHg level of control with a 3 second hold on a biofeedback pressure cuff)

Cranial Cervical flexion endurance (measured in seconds)

Measured by a dynamometer in flexion, extension, rotation and side-bending, recorded as force produced in each direction

Score on activities as recorded in headset VR. This game is scored on a 0 - 1000 point scale during completion of the game activity for 60 seconds. Requires participant to follow a moving object with eyes while tracing manually. Accuracy of manual trace produces total score. Higher score = better performance.

Score on activities as recorded in headset VR. This game is scored on a 0 - 1000 point scale during completion of the game activity for 60 seconds. Requires participant to shift eyes to location of a presented visual stimulus and to activate the location with a manual control. Speed and accuracy of manual activation produces total score. Higher score = better performance.

Score on activities as recorded in headset VR. This game is scored on a 0 - 1000 point scale during completion of the game activity for 60 seconds. Requires participant to follow a moving object with eyes while tracing manually. Accuracy of manual trace produces total score. Higher score = better performance.

Score on activities as recorded in headset VR. This game is scored on a 0 - 1000 point scale during completion of the game activity which is conducted according to the Clinical Joint Position Error Test. Accuracy of head relocation after 3 movements to the left, 3 to the right and 3 into extension produces total score. Higher score = better performance.

Score on activities as recorded in headset VR. This game is scored on a 0 - 1000 point scale during completion of the game activity for 60 seconds. Requires participant to use head and neck movement control to trace a maze. Score is based on accuracy and speed of maze trace.

Higher score = better performance.

Score on activities as recorded in headset VR. This game is scored on a 0 - 1000 point scale during completion of the game activity for 60 seconds. Requires participant to maintain standing balance while visual scene in VR is tilting left and right. Score is based on postural sway as recorded by headset sensors. Higher score = better performance.

Score on activities as recorded in headset VR. This game is scored on a 0 - 1000 point scale during completion of the game activity. Requires participant to reproduce a chin-tucked position and hold for 5 seconds. Score is based on correct head alignment (as compared to starting position, measured by headset sensors) across 10 repetitions. Higher score = better performance.

Score on activities as recorded in headset VR. This game is scored on a 0 - 1000 point scale during completion of the game activity for 60 seconds. Requires participant to visually search a complex scene to find a hidden object. Score is based on the number of correct manual identifications of the hidden object. Higher score = better performance.

Score on activities as recorded in headset VR. This game is scored on a 0 - 1000 point scale during completion of the game activity for 60 seconds. Requires participant to focus on central object and use peripheral vision to identify the same object and indicate with a manual selection. Score is based on number of correct identifications. Higher score = better performance.