Search Our Scientific Publications & Authors

Pediatr Radiol 2020 Jun 30. Epub 2020 Jun 30.

Neural Connectivity Laboratory, Department of Radiology and Biomedical Imaging, University of California, San Francisco, 185 Berry St., Suite 350, San Francisco, CA, 94158, USA.

Background: Although acute neurologic impairment might be transient, other long-term effects can be observed with mild traumatic brain injury. However, when pediatric patients with mild traumatic brain injury present for medical care, conventional imaging with CT and MR imaging often does not reveal abnormalities.

Objective: To determine whether edge density imaging can separate pediatric mild traumatic brain injury from typically developing controls. Read More

J Athl Train 2020 Jun 30. Epub 2020 Jun 30.

Keller Army Community Hospital, West Point, NY.

Context: Approximately half of individuals who sustain a concussion do not immediately report their injuries. Motivators for not reporting include thinking the suspected concussion was not a serious injury and wanting to continue participating in activity. Additionally, military personnel have concerns about how concussions may affect their careers. Read More

J Athl Train 2020 Jun 30. Epub 2020 Jun 30.

Motor Control Research Laboratory, University of Illinois at Urbana-Champaign.

Context: With growing awareness of and advocacy for including individuals with disabilities in sport, implementation of concussion-assessment and -management strategies is warranted. Limited research is available on concussion assessment in adapted wheelchair sport athletes.

Objective: To examine baseline symptom reporting, computerized neurocognitive testing, and a modified balance scoring system in adapted athletes. Read More

Local Reg Anesth 2020 22;13:49-55. Epub 2020 Jun 22.

Department of Anesthesiology, Division of Regional Anesthesiology and Acute Pain Medicine, University of Texas Health Science Center at Houston, McGovern Medical School, Houston, TX 77030, USA.

Intractable headaches can be debilitating, often leading to significant distress, prolonged medical treatment, and unanticipated hospital admissions. There have been significant advances in the treatment of primary intractable headaches such as migraines, tension headaches, and cluster headaches beyond medical management. Treatments may now include interventional strategies such as trigger-point injections, peripheral nerve stimulators, or peripheral nerve and ganglion blocks. Read More

Phys Sportsmed 2020 Jun 30. Epub 2020 Jun 30.

Michigan State University , East Lansing MI.

Objective: Concussion is a global sport injury; however, this public health issue has yet to be studied across Africa. It is unknown if tests such as the Immediate Post-Concussion Assessment and Cognitive Test (ImPACT) Quick Test (QT) are culturally appropriate for implementation as part of a concussion screening protocol in Zambia or other African nations. Study objectives included: 1) establish that Zambian athletes are able to complete the iPad-based ImPACT QT with respect to language or cultural barriers that may exist, and 2) document baseline neurocognitive percentile ranks among Zambian football athletes on the ImPACT QT. Read More

Clin Neuropsychol 2020 Jun 30:1-11. Epub 2020 Jun 30.

Matthew Gfeller Sport-Related Traumatic Brain Injury Research Center, Department of Exercise and Sport Science, The University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.

To determine the relationship between neurovascular coupling (NVC), vision and sensory performance in Special Operations Forces (SOF) combat soldiers with and without concussion history. We studied 61 SOF combat soldiers (male, age = 33.8 ± 3. Read More

Cephalalgia 2020 Jun 29:333102420937664. Epub 2020 Jun 29.

Department of Anesthesia, Critical Care and Pain Medicine, Beth Israel Deaconess Medical Centre, Boston, MA, USA.

Introduction: Posttraumatic headache is one of the most common, debilitating, and difficult symptoms to manage after a traumatic head injury. The development of novel therapeutic approaches is nevertheless hampered by the paucity of preclinical models and poor understanding of the mechanisms underlying posttraumatic headache. To address these shortcomings, we previously characterized the development of posttraumatic headache-like pain behaviors in rats subjected to a single mild closed head injury using a 250 g weight drop. Read More

F1000Res 2019 9;8:1024. Epub 2019 Jul 9.

Faculty of Sport and Physical Education, University of Novi Sad, Novi Sad, 21000, Serbia.

Sport-related mild traumatic brain injury (TBI) is a serious trauma that could impair brain function of an injured athlete. Treatment solutions for mild TBI typically concentrate on complete rest, while non-traditional therapeutic options remain largely ineffective. Molecular hydrogen (H ) is an innovative neuroprotective agent that can easily reach the brain, yet no data are available concerning its value as a first-aid intervention after a mild TBI. Read More

Brain Inj 2020 Jun 28. Epub 2020 Jun 28.

Concussion Care Centre of Virginia, LTD, Tree of Life Services, Inc ., Richmond, Virginia, USA.

Curr Pain Headache Rep 2020 Jun 27;24(8):44. Epub 2020 Jun 27.

Matthew Gfeller Sport-Related Traumatic Brain Injury Research Center, Department of Exercise and Sport Science, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.

Purpose Of Review: To discuss recent literature concerning the application of the biopsychosocial model in the management of concussion and post-concussion headache.

Recent Findings: Current research suggests that the biopsychosocial model is applicable to the concussion management process, particularly management of post-concussion headache. Such application is best illustrated by current active treatment strategies such as exercise, multifaceted rehabilitation, and psychosocial interventions targeting improved patient outcomes. Read More

J Neurosci Methods 2020 Jun 24;343:108831. Epub 2020 Jun 24.

Spinal Cord & Brain Injury Research Center, University of Kentucky, Lexington KY, United States; Department of Neuroscience, University of Kentucky, Lexington KY, United States; Sanders-Brown Center on Aging, University of Kentucky, Lexington KY, United States. Electronic address:

Background: A mild traumatic brain injury (TBI) occurs to millions of people each year. Translational approaches to understanding the pathogenesis of neurological diseases and the testing of the effectiveness of interventions typically require cognitive function assays in rodents.

New Methods: Our goal was to validate the active avoidance task using the GEMINI avoidance system in a mouse model of mild closed head injury (CHI). Read More

Mil Med 2020 Jun 27. Epub 2020 Jun 27.

Medical Modeling, Simulation, and Mission Support Department, Naval Health Research Center, San Diego, CA 92106.

Introduction: Tinnitus is an auditory problem frequently reported by military personnel and is currently responsible for 1 billion dollars annually in disability compensation. Recent military conflicts in Iraq and Afghanistan saw high levels of combat exposure coupled with a surge in blast weaponry, both of which can adversely affect hearing. The present study explored the prevalence of tinnitus and the association with self-rated health among military personnel injured during combat deployment. Read More

J Am Dent Assoc 2020 Jun 22. Epub 2020 Jun 22.

PLoS One 2020 26;15(6):e0235281. Epub 2020 Jun 26.

Neglected Tropical Diseases, Federal Ministry of Health, Addis Ababa, Ethiopia.

Background: Soil-transmitted helminth (STH) infections remain the most common neglected tropical diseases among children living mainly in low-resource settings. Preventive chemotherapy (PC) has been implemented as one of the main public health interventions to control and eliminate STH infections. Although data on routine coverage of PC against STH are available at different level of the health system; these data are unreliable as they are subject to errors and manipulation and evidence is lacking on validated treatment coverage. Read More

Neuropsychol Rehabil 2020 Jun 25:1-25. Epub 2020 Jun 25.

Danish Concussion Center, Copenhagen, Denmark.

Individuals with mild traumatic brain injury (mTBI) may experience protracted symptoms affecting their ability to work. Several actors may facilitate or act as a barrier to a successful return to work (RTW). This qualitative study used semi-structured in-depth interviews with 22 adults with mTBI at 2-5 years post injury, targeting experiences of how different actors facilitated or acted as a barrier in the RTW process, and encompassed the mTBI trajectory from the acute phase to the post-acute phase. Read More

Int J Environ Res Public Health 2020 Jun 22;17(12). Epub 2020 Jun 22.

Department of Health and Sport Management, Osaka University of Health and Sport Sciences, Osaka 590-0496, Japan.

Sports-related concussion (SRC) is a major public health concern. This study aimed to assess the association between mouthguard use and the incidence of SRC in college students through a case-control study using propensity score matching. In total, 195 of 2185 potential participants volunteered to participate in this study. Read More

Brain Inj 2020 Jun 24:1-6. Epub 2020 Jun 24.

Internal Medicine & Orthopaedic Surgery, Team Physician and Medical Director, UVA Sports Medicine, University of Virginia Health System.

Objectives: The growing concern over player safety and long-term health effects of sport-related concussion (SRC) led the Atlantic Coast Conference (ACC) to implement the medical observer, whose primary job is to identify SRCs not seen by sideline medical staff. The primary aim of this survey was to determine if the MO identifies SRCs the sideline medical staff missed during gameplay.

Methods: The authors distributed a 19-item questionnaire to all ACC athletic departments that assessed for SRCs or non-concussion injuries that were detected by the MO during the 2015-2016 ACC football season. Read More

PM R 2020 Jun 24. Epub 2020 Jun 24.

Department of Physical Medicine and Rehabilitation, Johns Hopkins University School of Medicine.

Introduction: Novel research suggests that children engaging in physical activity during recovery from concussion may recover more rapidly.

Objective: The purpose of this investigation was to determine if level of physical activity at presentation to a rehabilitation-based concussion specialty clinic predicted days from injury to recovery.

Design: Retrospective Cohort SETTING: A concussion sub-specialty clinic at an academic institution PATIENTS: Retrospective review of medical records between September 2015 and February 2017 identified 178 children ages 6-17 years (mean age = 13. Read More

Neuropsychol Rev 2020 Jun 23. Epub 2020 Jun 23.

Research Center, CIUSSS du Nord-de-l'Île-de-Montréal, Montréal, Quebec, Canada.

Sport-related concussion (SRC) is managed primarily through serial clinical evaluations throughout recovery. However, studies suggest that clinical measures may not be suitable to detect subtle alterations in functioning and are limited by numerous internal and external factors. Electroencephalography (EEG) has been used for over eight decades to discern altered function following illnesses and injuries, including traumatic brain injury. Read More

J Athl Train 2020 Jun 23. Epub 2020 Jun 23.

Department of Orthopaedic Surgery, University of Pittsburgh, PA.

Context: Increased near point of convergence (NPC) distance is a common finding after concussion and is associated with physical symptoms and worsened neurocognitive performance. Vestibular/Ocular Motor Screening measures NPC distance across 3 trials and uses the average measurement to inform clinical care. However, whether 3 trials are necessary, are consistent, or add clinical utility is unknown. Read More

J Clin Med 2020 Jun 19;9(6). Epub 2020 Jun 19.

Institute of Medical Psychology and Medical Sociology, University Medical Center Göttingen, 37073 Göttingen, Germany.

Background: Post-concussion symptoms (PCS) are often reported as consequences of mild and moderate traumatic brain injury (TBI), but these symptoms are not well documented in severe TBI. There is a lack of agreement as to which factors and covariates affect the occurrence, frequency, and intensity of PCS among TBI severity groups. The present study therefore aims to examine the association between sociodemographic, premorbid, and injury-related factors and PCS. Read More

Brain Res 2020 Jun 20;1746:146998. Epub 2020 Jun 20.

McMaster University - ARiEAL Research Centre, L.R. Wilson Hall, McMaster University, 1280 Main Street West, Hamilton, ON L8S 4M2, Canada; McMaster University - Department of Linguistics and Languages, Canada; McMaster University - School of Biomedical Engineering, McMaster University, ETB-406, 1280 Main St., West, Hamilton, ON L8S 4K1, Canada; McMaster University - Department of Psychology, Neuroscience and Behaviour, Canada; MaRS Centre - Vector Institute, Canada. Electronic address:

Objective: The present study sought to determine: 1) whether concussed adolescents exhibited deficits in neurocognitive functioning as reflected by neurophysiological alterations; 2) if neurophysiological alterations could be linked to supplementary data such as the number of previous concussions and days since injury; and 3) if deficits in psychological health and behavioural tests increased during diagnosis duration.

Methods: Twenty-six concussed adolescents were compared to twenty-eight healthy controls with no prior concussions. Self-report inventories evaluated depressive and concussive symptomatology, while behavioral tests evaluated cognitive ability qualitatively. Read More

No Shinkei Geka 2020 Jun;48(6):521-526

Department of Neurosurgery, Iwate Medical University School of Medicine.

Second impact syndrome occurrs when a patient who has sustained an initial head injury, most often a concussion, sustains a second head injury before the symptoms associated with the first have fully resolved, leading to rapid brain swelling and herniation. However, the underlying pathophysiology remains unclear. We report two cases in which acute subdural hematoma with rapid malignant brain swelling developed after repeated head traumas while snowboarding. Read More

Life Sci 2020 Jun 19:117991. Epub 2020 Jun 19.

Programa de Pós-Graduação em Ciências Biológicas, Bioquímica Toxicológica Universidade Federal de Santa Maria, 97105-900, Brazil; Laboratório de Bioquímica do Exercício Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil. Electronic address:

Traumatic brain injury (TBI) is a public health problem in which even though 80 to 90% of cases are considered mild, usually starts a sequence of neurological disorders that can last a considerable time. Most of the research of this injury has been focused on oxidative stress and functional deficits; however, mechanisms that underlie the development of neuropsychiatric disorders remain little researched. Due to this, the present authors decided to investigate whether recurrent concussion protocols alter depressive-like phenotype behavior, and whether mitochondria play an indispensable role in this behavior or not. Read More

Ann Otol Rhinol Laryngol 2020 Jun 21:3489420936710. Epub 2020 Jun 21.

Department of Head and Neck Surgery, Kaiser Permanente Oakland Medical Center, Oakland, CA, USA.

Objective: We describe the incidence and characteristics of patients with head and neck injuries from rock climbing who present to United States emergency departments and evaluate predictors of hospitalization.

Methods: The National Electronic Injury Surveillance System (NEISS) database was queried for rock climbing injuries to the head, face, mouth, neck, and ear under product code "mountain climbing" from the years 2009 to 2018. Demographics, injury characteristics, and disposition data were reviewed. Read More

Brain Inj 2020 Jun 21:1-9. Epub 2020 Jun 21.

Department of Neurology, University of Groningen, University Medical Center Groningen , Groningen, The Netherlands.

Objective: Post-concussion syndrome (PCS) occurs following mild traumatic brain injury (mTBI). Patients with mTBI are often assessed using self-report instruments that rely on perception of current symptoms compared to how they felt and functioned pre-injury. The objective was to examine reliability of patients' post-injury reporting of their pre-injury symptoms. Read More

Ann Transl Med 2020 May;8(9):595

Australian Football League, Melbourne, Australia.

Pediatric concussion is a growing health concern. Concussion is generally poorly understood within the community. Many parents are unaware of the signs and varying symptoms of concussion. Read More

Int J Sports Phys Ther 2020 May;15(3):374-379

Northern Arizona University, Flagstaff, AZ, USA.

Background: The diagnosis of a sports-related concussion (SRC) relies heavily on self-report from the athlete; therefore, the true percentage of those sustaining an SRC is not readily known. Concussed athletes are at higher risk for permanent or more catastrophic injury, especially without a diagnosis. Limited research has been done to determine the factors associated with concussion reporting behaviors in high school athletes. Read More

Case Rep Med 2020 3;2020:7154120. Epub 2020 Jun 3.

Waitemata Cardiology, 181 Shakespeare Road, Milford, Auckland 0620, New Zealand.

We present a unique case study report of a male individual with a history of mild nonischaemic cardiomyopathy, with no ventricular ectopy, that at the age of 76 years sustained multiple concussions (i.e., mild traumatic brain injury) within a week of each other. Read More

Acta Neurol Scand 2020 Jun 19. Epub 2020 Jun 19.

Neurobiology Research Unit, Dept. of Neurology, Rigshospitalet, 9 Blegdamsvej, DK-2100, Copenhagen, Denmark.

Background: Treatment options for the subgroup of people who develop long lasting symptoms following mild traumatic brain injury are limited. Transcranial pulsating low-frequency electromagnetic stimulation (T-PEMF) in other patient groups has shown promising results in several studies with proposed neuroprotective and anti-inflammatory effects.

Objective: The present pilot study was conducted to access feasibility and tolerability of T-PEMF in treating post-concussion syndrome. Read More

Scand J Med Sci Sports 2020 Jun 17. Epub 2020 Jun 17.

Division of Sports Medicine, University of Pretoria, Pretoria, South Africa.

Head injuries can result in substantially different outcomes, ranging from no detectable effect to transient functional impairments to life-threatening structural lesions. In high-level international football (soccer) tournaments, on average, one head injury occurs in every third match. Making the diagnosis and determining the severity of a head injury immediately on-pitch or off-field is a major challenge for team physicians, especially because clinical signs of a brain injury can develop over several minutes, hours, or even days after the injury. Read More

Sports Med 2020 Jun 16. Epub 2020 Jun 16.

Michigan Concussion Center, University of Michigan, Ann Arbor, MI, USA.

Background: The absence of evidence-based guidelines make medical disqualification (MDQ) following concussion one of the most challenging decision-making processes faced by sports medicine professionals.

Objective: We aimed to compare premorbid and postmorbid factors between student-athletes that were and were not medically disqualified from sport following a concussion.

Methods: Among 1832 student-athletes diagnosed with concussion within the CARE Consortium, 53 (2. Read More

Ann Biomed Eng 2020 Jun 18. Epub 2020 Jun 18.

Pediatric Neurology, Nationwide Children's Hospital and The Ohio State University, 700 Children's Drive, Columbus, OH, 43205, USA.

Retrospective estimates of head impact burden in contact sports are often used in studies assessing for correlation of head impact exposure with neurocognitive outcomes later in life. These estimations assume a consistent impact burden from year to year. We monitored head impacts in youth tackle football players in the 6th-8th grades and high school varsity players using helmet-based sensors during two consecutive seasons. Read More

J Athl Train 2020 Jun 18. Epub 2020 Jun 18.

NeuroTrauma Research Laboratory, University of Michigan, Ann Arbor.

Context: Assessments of the duration of concussion recovery have primarily been limited to sport-related concussions and male contact sports. Furthermore, whereas durations of symptoms and return-to-activity (RTA) protocols encompass total recovery, the trajectory of each duration has not been examined separately.

Objective: To identify individual (eg, demographics, medical history), initial concussion injury (eg, symptoms), and external factors (eg, site) associated with symptom duration and RTA-protocol duration after concussion. Read More

J Athl Train 2020 Jun 18. Epub 2020 Jun 18.

University of Georgia, Athens.

Context: Athletic trainers (ATs) are heavily involved in concussion assessment and return-to-play (RTP) decision making. Despite ATs' crucial role, few researchers have directly examined ATs' knowledge of concussions or whether concussion knowledge or clinical experience affects clinical concussion-management practices.

Objective: To determine the overall concussion knowledge of ATs and whether concussion knowledge and clinical experience affect concussion-assessment and -management practices. Read More

Pediatr Emerg Care 2020 Jun 16. Epub 2020 Jun 16.

From the Center for Injury Research and Prevention.

Objective: The aim of the study was to comprehensively describe the natural history of concussion in early childhood between 0 and 4 years.

Methods: Retrospective cohort study of 329 patients aged 0 to 4 years, with an International Classification of Diseases, Ninth Revision, concussion diagnosis in the Children's Hospital of Philadelphia healthcare network from October 1, 2013, to September 30, 2015. Clinical data were abstracted from the Children's Hospital of Philadelphia electronic health record, which captured all clinical care visits and injury characteristics. Read More

Neurology 2020 Jun 17. Epub 2020 Jun 17.

From Medical Biophysics (K.Y.M., R.B., R.S.M.), School of Kinesiology (J.S.B., J.P.D.), Microbiology and Immunology (K.B.), Health and Rehabilitation Sciences (A.H.), Anatomy and Cell Biology (A.B.), Physical Medicine and Rehabilitation (T.D.), and School of Occupational Therapy (J.H.), Western University; Centre for Functional and Metabolic Mapping (K.Y.M., R.B., R.S.M.) and Molecular Medicine Research Laboratories (K.B., C.B., A.B., G.A.D.), Robarts Research Institute; Primary Care Sport Medicine (L.F., T.J.), Fowler Kennedy Sport Medicine; and Paediatrics Critical Care Medicine (D.F.), London Health Sciences Centre, Ontario, Canada

Objective: To longitudinally assess brain microstructure and function in female varsity athletes participating in contact and noncontact sports.

Methods: Concussion-free female rugby players (n = 73) were compared to age-matched (ages 18-23) female swimmers and rowers (n = 31) during the in- and off-season. Diffusion and resting-state fMRI (rs-fMRI) measures were the primary outcomes. Read More

J Neurol Sci 2020 May 30;415:116953. Epub 2020 May 30.

Department of Neurology, New York University Grossman School of Medicine, New York, NY, USA; Department of Population Health, New York University Grossman School of Medicine, New York, NY, USA; Department of Ophthalmology, New York University Grossman School of Medicine, New York, NY, USA. Electronic address:

Objective: Tests of rapid automatized naming (RAN) have been used for decades to evaluate neurological conditions. RAN tests require extensive brain pathways involving visual perception, memory, eye movements and language. To the extent that different naming tasks capture varied visual pathways and related networks, we developed the Staggered Uneven Number (SUN) test of rapid number naming to complement existing RAN tests, such as the Mobile Universal Lexicon Evaluation System (MULES). Read More

J Neurol Sci 2020 Jun 6;416:116951. Epub 2020 Jun 6.

Michigan State University, 308 W. Circle Drive, Room 134, East Lansing, MI 48823, United States. Electronic address:

Despite the clinical utility of baseline comparisons during concussion assessments, little evidence exists on long-term test-retest reliability of baseline tests in youth athletes. In addition, sex differences in baseline performance are inconsistent in youth athletes, warranting further research. The purpose was to examine sex differences, prevalence of false-positive scores, and long-term test-retest reliability of the King-Devick (KD) test. Read More

Front Neurol 2020 29;11:491. Epub 2020 May 29.

Curtin Health Innovation Research Institute, Curtin University, Perth, WA, Australia.

Whilst detrimental effects of repeated sub-concussive impacts on neurophysiological and behavioral function are increasingly reported, the underlying mechanisms are largely unknown. Here, we report that repeated sub-concussion with a light weight drop (25 g) in wild-type PVG rats for 2 weeks does not induce detectable neuromotor dysfunction assessed by beamwalk and rotarod tests. However, after 12 weeks of repeated sub-concussion, the rats exhibited moderate neuromotor dysfunction. Read More

J Sci Med Sport 2020 May 26. Epub 2020 May 26.

Division of Physical Medicine and Rehabilitation, University of Utah, United States.

Objectives: To describe the design and implementation of an injury surveillance system for youth mountain bike racing in the United States, and to report preliminary first-year results.

Design: Descriptive sports injury epidemiology study.

Methods: After two and a half years of development and extensive beta-testing, an electronic injury surveillance system went live in January, 2018. Read More

J Orthop Surg Res 2020 Jun 16;15(1):223. Epub 2020 Jun 16.

Department of Orthopedics, The Third Affiliated Hospital of Hebei Medical University, 139 Ziqiang Road, Shijiazhuang, 050051, Hebei, China.

Background: Spinal cord injury without radiographic abnormality (SCIWORA) is a rare traumatic myelopathy. Although surgery is one of the most important treatments, the surgery for SCIWORA is controversial, especially the time of surgery is a topic of controversy. Here, we investigate the effects of difference in duration from injury to surgery on the outcome of SCIWORA. Read More

Appl Neuropsychol Adult 2020 Jun 17:1-10. Epub 2020 Jun 17.

Graduate Department of Psychological Clinical Science, University of Toronto, Toronto, Canada.

We sought to determine whether the diagnostic terms 'mild traumatic brain injury (mTBI)' and 'concussion' result in differences in perceived cognitive, emotional, and post-concussive sequelae. A total of 81 healthy university students (79% female; 69% of Asian descent) were randomly assigned to one of two conditions: mTBI ( = 41), or concussion ( = 40), and were instructed to simulate on a battery of cognitive (Neuropsychological Assessment Battery - Screening Module), emotional (Beck Anxiety Inventory, Beck Depression Inventory-II), and post-concussive (Rivermead Postconcussive Symptoms Questionnaire) measures.: There were no significant group differences between expected cognitive, emotional, or post-concussive consequences. Read More

Med Sci Sports Exerc 2020 Jul;52(7):1629-1638

Department of Neurosurgery, Medical College of Wisconsin, Milwaukee, WI.

Introduction: Regulatory efforts toward reducing concussion risk have begun to focus on decreasing the number of head impacts (i.e., head impact burden) sustained by athletes in contact sports. Read More

Neurology 2020 Jun;94(24):1112

(Milwaukee).

Neurology 2020 Jun;94(24):1111-1112

(New York).

Neurology 2020 Jun;94(24):1111

J Int Neuropsychol Soc 2020 Jun 16:1-12. Epub 2020 Jun 16.

John A. Feagin Jr. Sports Medicine Fellowship, Keller Army Hospital, West Point, NY10996, USA.

Objective: In response to advancing clinical practice guidelines regarding concussion management, service members, like athletes, complete a baseline assessment prior to participating in high-risk activities. While several studies have established test stability in athletes, no investigation to date has examined the stability of baseline assessment scores in military cadets. The objective of this study was to assess the test-retest reliability of a baseline concussion test battery in cadets at U. Read More

Sports Biomech 2020 Jun 15:1-24. Epub 2020 Jun 15.

Human Kinetics, University of Ottawa , Ottawa, Ontario, Canada.

The purpose of this research was to compare the frequency and magnitude of head impact events between Pee Wee and Bantam ice hockey players. Videos of Pee Wee and Bantam boys' ice hockey were analysed to determine the frequency and type of head impact events. The head impact events were then reconstructed in the laboratory using physical and finite element models to determine the magnitude of strain in the brain tissues. Read More

Physiol Rep 2020 Jun;8(11):e14458

Concussion Research Laboratory, Faculty of Health and Exercise Science, University of British Columbia, Kelowna, BC, Canada.

Presently, the literature describing the influence of diurnal variation on dynamic cerebral autoregulation (dCA) metrics is sparse. Additionally, there is little data with respect to dCA comparisons between anterior/posterior circulation beds and biological sexes using squat-stand maneuvers. Eight male and eight female participants (n = 16) performed 5 min of spontaneous upright rest and squat-stand maneuvers at 0. Read More