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Research Abstract Category: Concussions

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November 27, 2018

Impact of Factors that Affect Reading Skill Level on King–Devick Baseline Performance Time

The King–Devick (K–D) test is often used as part of a multimodal assessment to screen for sport-related concussion. However, the test involves reading numbers, and little is known about...
September 27, 2018

Options for Evaluating and Tracking Pediatric Concussion

Background: It is estimated that 45 million persons between the ages of 5 and 19 years participate in some form of athletic activity. It is further estimated that 5%...
September 26, 2018

In situ use of the King-Devick Eye Tracking test and changes seen with sport-related concussion: saccadic and blinks counts

Objective: Sport-related concussion (SRC) can result in impaired oculomotor function. Oculomotor performance, measured utilizing the King-Devick/Eye Tracking test (K-D/ET), is reported to be able to identify sub-optimal brain function....
September 17, 2018

Concussion Evaluation and Management: An Osteopathic Perspective

Background: Concussions have been increasingly reported over the past decade, but the reported incidence likely minimizes the actual numbers of people affected. Associated symptoms include emotional, somatic, and cognitive...
September 5, 2018

The Effect of Linguistic Background on Rapid Number Naming: Implications for Native Versus Non-Native English Speakers on Sideline-Focused Concussion Assessments

Objective: To determine if native English speakers (NES) perform differently compared to non-native English speakers (NNES) on a sideline-focused rapid number naming task. A secondary aim was to characterize...
June 15, 2018

What sideline tests help diagnose concussion in athletes?

In patients suspected of having a concussion after a nontrivial head injury, the presence of headache alone has a sensitivity of 0.76 to 1.0 and a specificity of 0.83...
May 4, 2018

‘Sandbagging’ a Vision Test for Concussion-based Sideline Assessment: An Eye Movement Investigation Objectively Reveals the ‘Gamers’ Strategies

Objective: Quantitative eye movement characterization during ‘sandbagging’ of the rapid number naming King Devick (K-D) test. Background: Athletes may under-report concussion symptoms, leading to inappropriate return-to-play and increased risk...
April 22, 2018

Relation of Quantitative Eye Movements with Cognitive Dysfunction in Patients with Concussion

Objective: To assess the relation of quantitative eye movements with cognitive dysfunction in concussion. Background: Inter-saccadic interval (ISI) prolongation during rapid number naming on King-Devick (K-D) testing has been...
April 17, 2018

Correlating the King-Devick Test with Vestibular/Ocular Motor Screening in Adolescent Patients with Concussion: A Pilot Study

Background: The King-Devick (K-D) test is a rapid number-naming task that has been well validated as a sensitive sideline performance measure for concussion detection. Patients with concussion take significantly...
April 17, 2018

The King–Devick test is a valid and reliable tool for assessing sport-related concussion in Australian football: A prospective cohort study

Objectives Sport-related concussion (SRC) research has focused on impaired oculomotor function. The King–Devick (K–D) test measures oculomotor performance and is reported to identify suboptimal brain function. The use of...
April 17, 2018

Reported concussion incidence in youth community Rugby Union and parental assessment of post head injury cognitive recovery using the King-Devick test

Aim: To assess the frequency of reported head injuries in youth community Rugby Union and determine whether the King-Devick (K-D) test could be used by parents as a means...
April 10, 2018

Reliability of the King-Devick Test as a Baseline Concussion Test for Professional Football Players

Objective: To evaluate the reliability of the King-Devick (K-D) Test in a sample of professional football players across three consecutive seasons. Methods: Team personnel tested players (n=135) with the...
April 10, 2018

King-Devick and SCAT Symptoms as a Predictor of Return to Play in Professional Canadian Football Players

Objective: To investigate variables that predict time loss following the diagnosis of sport related concussion (SRC) in Canadian Football Players. Background: Literature on the timeline to return-to-play (RTP) from...
March 10, 2018

Rapid Number Naming and Quantitative Eye Movements May Reflect Contact Sport Exposure in a Collegiate Ice Hockey Cohort

Background: The King-Devick (K-D) test of rapid number naming is a reliable visual performance measure that is a sensitive sideline indicator of concussion when time scores worsen (lengthen) from...
March 7, 2018

fNIRS Differentiates Cognitive Workload Between Concussed Adolescents and Healthy Controls

Introduction Concussion remains a clinical diagnosis based on subjective and non-specific symptoms with additional supporting assessments, such as neurocognitive testing and, more recently, physical examination findings. However, there are...

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