Concussions – King-Devick technologies, Inc.

August 22, 2022

King-Devick testing and concussion recovery time in collegiate athletes

Abstract Objectives: To assess whether the King-Devick (K D) test is useful as a prognostic test for prolonged concussion symptoms by examining the relationship between a) change in performance...

April 21, 2021

Diagnostic accuracy and reliability of sideline concussion evaluation: a prospective, case-controlled study in college athletes comparing newer tools and established tests

Abstract Objective: To assess diagnostic accuracy and reliability of sideline concussion tests in college athletes. Methods: Athletes completed baseline concussion tests including Post-Concussion Symptom Scale, Standardised Assessment of Concussion...

February 4, 2021

Head injury in mixed martial arts: A review of epidemiology, affected brain structures and risks of cognitive decline

Abstract The popularity trend of mixed martial arts (MMA) is steeply increasing, especially in the very young population. Unfortunately, MMA carries an enormous risk of head trauma. The aim...

February 2, 2021

How sandbag-able are concussion sideline assessments? A close look at eye movements to uncover strategies

Abstract Background: Sideline diagnostic tests for concussion are vulnerable to volitional poor performance (“sandbagging”) on baseline assessments, motivated by desire to subvert concussion detection and potential removal from play....

November 15, 2020

Immediate effects of an acute bout of repeated soccer heading on cognitive performance

Abstract Purpose: There is growing concern surrounding the harmful effects of soccer heading on cognitive function. The present study aims to examine the immediate effects of heading. Methods: 30...

September 28, 2020

Use of the King-Devick test for the identification of concussion in an amateur domestic women’s rugby union team over two competition seasons in New Zealand

Objective To investigate the use of the King-Devick (K-D) test for sideline assessment of concussive injuries in a New Zealand amateur women's rugby union team. Design Prospective cohort observational....

September 15, 2020

Concussions in Ice Hockey – Moving Toward Objective Diagnoses and Point-of-care Treatment: A Review

The incidence of sport-related concussion coupled with a doubling of the participation rate in youth hockey over the past two decades provides impetus for the review of the most...

August 17, 2020

Disparities on Baseline Performance Using Neurocognitive and Oculomotor Clinical Measures of Concussion

Background Given the high participation of Black/African American individuals in high school sports, especially high-risk sports for concussion, it is important to note if racial and socioeconomic status (SES)...

July 1, 2020

Responsiveness of a Balance Assessment Using a Mobile Application

Background: Balance assessment is used by clinicians as part of athlete concussion screening. The King-Devick (K-D) Balance app is designed to provide an objective balance assessment value. The purpose...

May 31, 2020

Diversifying sport-related concussion measures with baseline balance and ocular-motor scores in professional Zambian football athletes

Purpose Normative values of common sport-related concussion assessment tools may assist clinical diagnosis and management. However, current baseline normative values are not representative of athletic participants across international domains....

May 29, 2020

Differential Eye Movements and Visual Contrast Acuity in National Collegiate Athletic Association Athletes

Though studies describe postconcussive changes in eye movements, there is a need for data describing baseline eye movements. The purpose of this study was to describe baseline eye movements...

May 26, 2020

Clinical examination factors that predict delayed recovery in individuals with concussion

Background Risk factors for prolonged recovery after concussion have been well researched, but specific objective clinical examination findings have not. This study examined whether clinical examination results could predict...

May 4, 2020

Vestibular/Ocular Motor Screening (VOMS) Change Scores and Concussion Recovery in Collegiate Athletes

Introduction: Following a concussion, vestibular dysfunction is present in 81-88% of athletes. Dizziness, a symptom commonly associate with vestibular dysfunction is reported by more than 50% of athletes with...

April 28, 2020

Postexercise Slowing on the King-Devick Test and Longer Recovery From Sport-Related Concussion in Adolescents: A Validation Study

Context The King-Devick (KD) test is a rapid number-reading test that has emerging use in the assessment of sport-related concussion (SRC). Previous research suggested that healthy individuals and patients...

Research Abstract Category: Concussions