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Vickie Plourde, Keith Owen Yeates, Brian L Brooks
OBJECTIVES: Individual differences in long-term psychosocial functioning after concussions in children and adolescents are poorly understood. The aim of the study was to investigate potential predictors of long-term psychosocial functioning and health-related quality of life in youth after prior concussion. METHODS: Participants (N=75; mean age=14.3 years old; 52% girls) with one prior concussion (n=24), multiple prior concussions (n=24), or a prior orthopedic injury and no concussion (n=27) were seen on average 2...
March 21, 2018: Journal of the International Neuropsychological Society: JINS
Nathan W Churchill, Michael G Hutchison, Simon J Graham, Tom A Schweizer
Concussion is associated with significant adverse effects within the first week post-injury, including physical complaints and altered cognition, sleep and mood. It is currently unknown whether these subjective disturbances have reliable functional brain correlates. Resting-state functional magnetic resonance imaging (rs-fMRI) has been used to measure functional connectivity of individuals after traumatic brain injury, but less is known about the relationship between functional connectivity and symptom assessments after a sport concussion...
2018: NeuroImage: Clinical
Erin J Sanchez, Lee F Gabler, Ann B Good, James R Funk, Jeff R Crandall, Matthew B Panzer
BACKGROUND: Head kinematics generated by laboratory reconstructions of professional football helmet impacts have been applied to computational models to study the biomechanics of concussion. Since the original publication of this data, techniques for evaluating accelerometer consistency and error correction have been developed. This study applies these techniques to the original reconstruction data and reanalyzes the results given the current state of concussion biomechanics. METHODS: Consistency checks were applied to the sensor data collected in the head of each test dummy...
March 14, 2018: Clinical Biomechanics
Breton M Asken, Russell M Bauer, Kevin M Guskiewicz, Michael A McCrea, Julianne D Schmidt, Christopher C Giza, Aliyah R Snyder, Zachary M Houck, Anthony P Kontos, Thomas W McAllister, Steven P Broglio, James R Clugston, Scott Anderson, Jeff Bazarian, Alison Brooks, Thomas Buckley, Sara Chrisman, Michael Collins, John DiFiori, Stefan Duma, Brian Dykhuizen, James T Eckner, Luis Feigenbaum, April Hoy, Louise Kelly, T Dianne Langford, Laura Lintner, Gerald McGinty, Jason Mihalik, Christopher Miles, Justus Ortega, Nicholas Port, Margot Putukian, Steve Rowson, Steven Svoboda
BACKGROUND: Timely removal from activity after concussion symptoms remains problematic despite heightened awareness. Previous studies indicated potential adverse effects of continuing to participate in physical activity immediately after sustaining a concussion. Hypothesis/Purpose: The purpose was to determine the effect of timing of removal from play after concussion on clinical outcomes. It was hypothesized that immediate removal from activity after sport-related concussion (SRC) would be associated with less time missed from sport, a shorter symptomatic period, and better outcomes on acute clinical measures...
March 1, 2018: American Journal of Sports Medicine
James T Eckner, Alireza Goshtasbi, Kayla Curtis, Aliaksandra Kapshai, Erik Myyra, Lea M Franco, Michael Favre, Jon A Jacobson, James A Ashton-Miller
Greater neck girth and strength may be associated with a lower risk of sport-related concussion due to mitigation of head accelerations by the neck. However, neck strengthening exercise remains unstudied in youth athletes. Therefore, this pilot study assessed the feasibility and effect of targeted neck strengthening exercises in youth athletes. Seventeen participants were allocated to perform 8-wk manual resistance-based neck strengthening (n = 13) or control resistance exercise (n = 4) programs. Before and after the intervention, participants completed laboratory-based assessments of neck size, strength, and head kinematics during standardized test loading in each plane of motion...
April 2018: American Journal of Physical Medicine & Rehabilitation
Richard Wennberg, Carmen Hiploylee, Peter Tai, Charles H Tator
BACKGROUND: Epidemiologic studies have suggested that concussion, or mild traumatic brain injury (mTBI), is associated with a twofold or greater increase in relative risk for the development of post-traumatic epilepsy. To assess the clinical validity of these findings, we analyzed the incidence of epilepsy in a large cohort of post-concussion patients in whom concussion was strictly defined according to international guidelines. METHODS: A retrospective cohort study of 330 consecutive post-concussion patients followed by a single concussion specialist...
March 20, 2018: Canadian Journal of Neurological Sciences. le Journal Canadien des Sciences Neurologiques
William T Tsushima, Andrea M Siu, Hyeong Jun Ahn, Bolin L Chang, Nathan M Murata
Objective: This study was designed to determine concussion incidence, risk, and relative risk among middle and high school athletes participating in various sports. Method: Data were retrospectively obtained from 10,334 athletes of 12 different sports in Hawaii. In addition to determining the overall concussion incidence, comparisons of incidence, risk, and relative risk were made according to age, sex, concussion history, sport, and football position. Results: The overall incidence of concussion among youth athletes was 1,250 (12...
March 15, 2018: Archives of Clinical Neuropsychology: the Official Journal of the National Academy of Neuropsychologists
Shira Russell-Giller, Diana Toto, Mike Heitzman, Mustafa Naematullah, John Shumko
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 longer to complete the K-D test than healthy controls. Previous research suggests that ocular motor deficits, specifically saccadic abnormalities, may be an underlying factor for the prolonged time. However, these findings have not been studied at length. HYPOTHESIS: K-D testing time of concussed adolescents at the initial clinical concussion visit will positively correlate with vestibular/ocular motor screening (VOMS) total scores...
March 1, 2018: Sports Health
Cindy Hunt, Alicja Michalak, Elaine Johnston, Chrissy Lefkimmiatis, Leila Macumber, Tony Jocko, Donna Ouchterlony
OBJECTIVE: Hockey is a popular sport played by many First Nation youth. Concussion frequently goes unrecognized and unreported in youth hockey. Unintentional injuries among Indigenous youth occur at rates three to four times the national Canadian average. The study sought to examine knowledge, attitudes and sources of concussion information among First Nations people attending a provincial hockey tournament. METHODS: A cross-sectional survey was undertaken. The survey by Mzazik et al...
March 19, 2018: Canadian Journal of Neurological Sciences. le Journal Canadien des Sciences Neurologiques
Temitayo Oyefunmike Oyegbile, Bronson Elizabeth Delasobera, Nassim Zecavati
The objective was to characterize cognitive deficits and postconcussive symptoms in a pediatric population with no concussion, a single concussion, and ≥2 concussions, using a cross-sectional design. Cognitive function and postconcussive symptoms were assessed in participants (age 10-20) with no concussion (n = 1118), single concussion (n = 368), and repeated (≥2) concussions (n = 252). Analyses were adjusted for age and gender. Individuals with ≥2 concussions exhibited more total postconcussive symptoms; more loss of consciousness, amnesia and confusion; more headaches; and poorer cognitive function compared to no concussion and single concussion...
January 1, 2018: Journal of Child Neurology
Damien J Lazar, Jonathan D Lichtenstein, David J Tybor
Background: Ultimate Frisbee (ultimate) is a fast-growing, popular sport played nationally by over 4 million athletes. While several studies have examined injury rates in ultimate, no work has investigated the prevalence of concussions specifically or players' knowledge and management of those injuries. Purpose: To estimate the lifetime prevalence of concussions in ultimate and to assess players' knowledge of concussions as well as their concussion management behaviors...
March 2018: Orthopaedic Journal of Sports Medicine
Peter C Fino, Lucy Parrington, Will Pitt, Douglas N Martini, James C Chesnutt, Li-Shan Chou, Laurie A King
BACKGROUND: While a growing number of studies have investigated the effects of concussion or mild traumatic brain injury (mTBI) on gait, many studies use different experimental paradigms and outcome measures. The path for translating experimental studies for objective clinical assessments of gait is unclear. RESEARCH QUESTION: This review asked 2 questions: 1) is gait abnormal after concussion/mTBI, and 2) what gait paradigms (single-task, dual-task, complex gait) detect abnormalities after concussion...
March 8, 2018: Gait & Posture
Cindy Lin, Ellen Casey, Daniel Herman, Nicole Katz, Adam Tenforde
Common sports injuries include bone stress injuries (BSI), anterior cruciate ligament injuries (ACL), and concussions. Less commonly recognized are the specific sex differences in epidemiology, risk factors, and outcomes of these conditions by sex. An understanding of these factors can improve their clinical management, from prescribing appropriate prehabilitation to guiding post injury rehabilitation and return to play. This narrative review summarizes the sex differences in the diagnosis and management of BSI, ACL injuries, and concussions...
March 14, 2018: PM & R: the Journal of Injury, Function, and Rehabilitation
Ryan C Kruse, Zhuo Li, Cara C Prideaux, Allen W Brown
BACKGROUND: Depression and traumatic brain injury (TBI) substantially contribute to the United States healthcare burden. Depression is a known risk factor for prolonged recovery after TBI. However, the effect of depression treatment on health care utilization has yet to be studied. OBJECTIVE: To examine whether an association exists between pharmacologic treatment of depression at the time of mild or concussive TBI and the number of subsequent clinician visits for persistent injury-related symptoms...
March 14, 2018: PM & R: the Journal of Injury, Function, and Rehabilitation
Richard G Ellenbogen, Hunt Batjer, Javier Cardenas, Mitchel Berger, Julian Bailes, Elizabeth Pieroth, Robert Heyer, Nicholas Theodore, Wellington Hsu, Elizabeth Nabel, Joe Maroon, Robert Cantu, Ronnie Barnes, James Collins, Margot Putukian, Russell Lonser, Gary Solomon, Allen Sills
One of the National Football League's (NFL) Head, Neck and Spine Committee's principal goals is to create a 'best practice' protocol for concussion diagnosis and management for its players. The science related to concussion diagnosis and management continues to evolve, thus the protocol has evolved contemporaneously. The Fifth International Conference on Concussion in Sport was held in Berlin in 2016, and guidelines for sports concussion diagnosis and management were revised and refined. The NFL Head, Neck and Spine Committee has synthesised the most recent empirical evidence for sports concussion diagnosis and management including the Berlin consensus statement and tailored it to the game played in the NFL...
March 16, 2018: British Journal of Sports Medicine
Brian R Johnson, Gerald T McGinty, Jonathan C Jackson, Thea M Ramsey, Marcus Hjalber, C C Taylor E Hill, Christopher J D'Lauro
No abstract text is available yet for this article.
March 14, 2018: Military Medicine
Alessander Danna-Dos-Santos, Sambit Mohapatra, Maria Santos, Adriana M Degani
Understanding the long-term effects of concussive events remains a challenge for the development of modern medical practices and the prevention of recurrent traumas. In this study, we utilized indices of oculomotor performance and the ability to react to simple environmental stimuli to assess the long-term motor effects of traumatic brain injury in its mildest form (mTBI). We performed analysis of eye movement accuracy, investigated the presence of abnormal eye movements, and quantified time to react to simple environmental stimuli on long-term mTBI survivors...
March 15, 2018: Scientific Reports
Damith Mohotti, P L N Fernando, Amir Zaghloul
BACKGROUND AND OBJECTIVE: The aim of this research is to study the behaviour of a human head during the event of an impact of a cricket ball. While many recent incidents were reported in relation to head injuries caused by the impact of cricket balls, there is no clear information available in the published literature about the possible threat levels and the protection level of the current protective equipment. This research investigates the effects of an impact of a cricket ball on a human head and the level of protection offered by the existing standard cricket helmet...
May 2018: Computer Methods and Programs in Biomedicine
Christopher P Tomczyk, Megan Mormile, Megan S Wittenberg, Jody L Langdon, Tamerah N Hunt
CONTEXT:   An estimated 15.3 million adolescent students are enrolled in U.S. high schools, with approximately 7.8 million participating in athletics. Researchers have examined various demographics in high school athletes; however, athletic participation may play a larger role in test performance than previously thought. Currently, investigations of concussion assessment may rely on uninjured athletes as controls. However, due to the intense nature of athletics, this may not be an appropriate practice...
March 15, 2018: Journal of Athletic Training
Derek Kellar, Sharlene Newman, Franco Pestilli, Hu Cheng, Nicholas L Port
Objectives: Though sub-concussive impacts are common during contact sports, there is little consensus whether repeat blows affect brain function. Using a "lifetime exposure" rather than acute exposure approach, we examined oculomotor performance and brain activation among collegiate football players and two control groups. Our analysis examined whether there are group differences in eye movement behavioral performance and in brain activation during smooth pursuit. Methods: Data from 21 off-season Division I football "starters" were compared with a) 19 collegiate cross-country runners, and b) 11 non-athlete college students who were SES matched to the football player group (total N  = 51)...
2018: NeuroImage: Clinical
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