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Michelle L Weber, John-Henry L Dean, Nicole L Hoffman, Steven P Broglio, Michael McCrea, Thomas W McAllister, Julianne D Schmidt, April Reed Hoy, Joseph B Hazzard, Louise A Kelly, Justus D Ortega, Nicholas Port, Margot Putukian, T Dianne Langford, Ryan Tierney, Darren E Campbell, Gerald McGinty, Patrick O'Donnell, Steven J Svoboda, John P DiFiori, Christopher C Giza, Holly J Benjamin, Thomas Buckley, Thomas W Kaminski, James R Clugston, Luis A Feigenbaum, James T Eckner, Kevin Guskiewicz, Jason P Mihalik, Jessica Dysart Miles, Scott Anderson, Christina L Master, Micky Collins, Anthony P Kontos, Jeffrey J Bazarian, Sara P D Chrisman, Allison Brooks, Stefan Duma, Christopher Todd Bullers, Christopher M Miles, Brian H Dykhuizen
BACKGROUND: A student-athlete's mental state, including history of trait anxiety and depression, or current psychological state may affect baseline concussion assessment performance. PURPOSE: (1) To determine if mental illness (anxiety, depression, anxiety with depression) influences baseline scores, (2) to determine if psychological state correlates with baseline performance, and (3) to determine if history of concussion affects Brief Symptom Inventory-18 (BSI-18) subscores of state anxiety, depression, and somatization...
April 1, 2018: American Journal of Sports Medicine
#2
David Silver, Nicola Brown, Conor Gissane
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 to chart cognitive recovery following head injury. METHODS: A prospective cohort study of 489 junior players (U9-U18) conducted at a community level Rugby Union club over four seasons. All players undertook a baseline K-D test at the start of each season. Players identified with suspected concussion performed the K-D test post injury and results were compared to their most recent baseline assessment...
May 15, 2018: Journal of the Neurological Sciences
#3
William T Tsushima, Vincent G Tsushima, Nathan M Murata
OBJECTIVE: The aim of this research was to develop preliminary norms for the Immediate Post-Concussion Assessment and Cognitive Testing (ImPACT) administered to a large sample of adolescent athletes from diverse ethnic backgrounds. DESIGN: A retrospective records review. SETTING: Middle and high school athletic departments. PARTICIPANTS: A total of 5741 male and female adolescent athletes in Hawaii, aged 13 to 18 years, in grades 9 to 12 were included in the study...
April 4, 2018: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
#4
Alice Theadom, Suzanne Barker-Collo, Kelly M Jones, Priya Parmar, Rohit Bhattacharjee, Valery L Feigin
BACKGROUND: Treatments to facilitate recovery after traumatic brain injury (TBI) are urgently needed. To examine the safety and potential effects of herbal supplement MLC901 (NeuroAiD IITM ) on cognitive functioning following TBI, we conducted a nine-month pilot, randomised placebo-controlled clinical trial. METHODS: Adults aged 18-65 years, 1-12-months post-mild or moderate TBI, were randomised to receive MLC901 (0.8g capsules/day) or placebo for 6-months. The primary outcome was cognitive functioning assessed by the CNS-Vital Signs online neuropsychological test...
April 3, 2018: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
#5
Mark Hecimovich, Doug King, Alasdair R Dempsey, Myles Murphy
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 the K-D test in Australian football (AF), a sport involving body contact and tackling, has not been documented. Therefore, the objective of this study was to determine the test-retest reliability and diagnostic accuracy of the K-D test on a sub-elite AF team. DESIGN: Prospective cohort study METHODS: In total, 22 male players (19...
March 28, 2018: Journal of Science and Medicine in Sport
#6
Kirstie Lithgow, Alex Chin, Chantel T Debert, Gregory A Kline
BACKGROUND: Growth hormone deficiency (GHD) is a potential consequence of traumatic brain injury (TBI), including sport-related concussion (SRC). GH stimulation testing is required for definitive diagnosis; however, this is resource intensive and can be associated with adverse symptoms or risks. Measurement of serum IGF-1 is more practical and accessible, and pituitary tumour patients with hypopituitarism and low serum IGF-1 have been shown to have a high probability of GHD. We aimed to evaluate IGF-1 measurement for diagnosing GHD in our local TBI population...
April 2, 2018: BMC Endocrine Disorders
#7
Kathryn L O'Connor, C Dain Allred, Kenneth L Cameron, Darren E Campbell, Christopher J D'Lauro, Megan N Houston, Brian R Johnson, Tim F Kelly, Gerald McGinty, Patrick G O'Donnell, Karen Y Peck, Steven J Svoboda, Paul Pasquina, Thomas McAllister, Michael McCrea, Steven P Broglio
Introduction: The prevalence and possible long-term consequences of concussion remain an increasing concern to the U.S. military, particularly as it pertains to maintaining a medically ready force. Baseline testing is being used both in the civilian and military domains to assess concussion injury and recovery. Accurate interpretation of these baseline assessments requires one to consider other influencing factors not related to concussion. To date, there is limited understanding, especially within the military, of what factors influence normative test performance...
March 28, 2018: Military Medicine
#8
David R Howell, Brant Berkstresser, Francis Wang, Thomas A Buckley, Rebekah Mannix, Alexandra Stillman, William P Meehan
BACKGROUND: Sleep deficits are associated with motor and cognitive function deficits, even in the absence of a recent concussion. RESEARCH QUESTION: Does the amount of self-reported sleep prior to pre-season concussion testing affect single-task and dual-task instrumented steady-state gait and timed tandem gait test performance? METHODS: One hundred and fourteen healthy collegiate athletes (mean age 18.8 ± 0.7 years; 60% female) reported the amount of sleep they received during the prior night and completed a timed tandem gait test and an instrumented assessment of steady-state gait in both single-task and dual-task conditions...
March 26, 2018: Gait & Posture
#9
Jacob Griffith, Kim Cluff, Brandon Eckerman, Jessica Aldrich, Ryan Becker, Peer Moore-Jansen, Jeremy Patterson
Elevated intracranial fluid volume can drive intracranial pressure increases, which can potentially result in numerous neurological complications or death. This study's focus was to develop a passive skin patch sensor for the head that would non-invasively measure cranial fluid volume shifts. The sensor consists of a single baseline component configured into a rectangular planar spiral with a self-resonant frequency response when impinged upon by external radio frequency sweeps. Fluid volume changes (10 mL increments) were detected through cranial bone using the sensor on a dry human skull model...
March 29, 2018: Sensors
#10
Omar Akhand, Matthew S Galetta, Lucy Cobbs, Lisena Hasanaj, Nikki Webb, Julia Drattell, Prin Amorapanth, John-Ross Rizzo, Rachel Nolan, Liliana Serrano, Janet C Rucker, Dennis Cardone, Barry D Jordan, Arlene Silverio, Steven L Galetta, Laura J Balcer
OBJECTIVE: Measures of rapid automatized naming (RAN) have been used for over 50 years to capture vision-based aspects of cognition. The Mobile Universal Lexicon Evaluation System (MULES) is a test of rapid picture naming under investigation for detection of concussion and other neurological disorders. MULES was designed as a series of 54 grouped color photographs (fruits, random objects, animals) that integrates saccades, color perception and contextual object identification. Recent changes to the MULES test have been made to improve ease of use on the athletic sidelines...
April 15, 2018: Journal of the Neurological Sciences
#11
Gordon Ward Fuller, Matthew J Cross, Keith A Stokes, Simon P T Kemp
BACKGROUND: The King-Devick (KD) test is an objective clinical test of eye movements that has been used to screen for concussion. We characterised the accuracy of the KD test and the World Rugby Head Injury Assessment (HIA-1) screening tools as methods of off-field evaluation for concussion after a suspicious head impact event. METHODS: A prospective cohort study was performed in elite English rugby union competitions between September 2016 and May 2017. The study population comprised consecutive players identified with a head impact event with the potential to result in concussion...
March 21, 2018: British Journal of Sports Medicine
#12
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
#13
Philip W Cameron, Noelle C Soltero, Justin Byers
Mild traumatic brain injuries (mTBIs) are common in contact sports. There is an association between mTBIs and altered motor function. BioSway technology measures individuals' balance using the Balance Error Scoring System (BESS). Prior to incorporating BESS testing in concussion protocol, other variables that influence the BESS test require review. The objective of this study is to determine if game fatigue in hockey players also influences the BESS score. 23 male (21.08 ± 1.09) National Collegiate Athletic Association (NCAA) athletes were tested using the BioSway™ (Biodex, USA)...
2018: International Journal of Exercise Science
#14
Christopher A Abeare, Isabelle Messa, Brandon G Zuccato, Bradley Merker, Laszlo Erdodi
Importance: Estimated base rates of invalid performance on baseline testing (base rates of failure) for the management of sport-related concussion range from 6.1% to 40.0%, depending on the validity indicator used. The instability of this key measure represents a challenge in the clinical interpretation of test results that could undermine the utility of baseline testing. Objectives: To determine the prevalence of invalid performance on baseline testing and to assess whether the prevalence varies as a function of age and validity indicator...
March 12, 2018: JAMA Neurology
#15
J K Dierijck, A D Wright, J D Smirl, K Bryk, P van Donkelaar
Although balance control has been studied extensively following acute concussion, little is known regarding repetitive sub-concussive head impacts or chronic exposure to multiple concussive events. Quiet stance postural control was characterized in contact sport athletes at pre-season (n = 135) and post-season (n = 48) to evaluate the effects of subconcussive trauma to the head. To determine the impact of acute concussion on postural control, athletes diagnosed with a concussion during the season (n = 12) were tested at 72-h, 2-weeks, and 1-month post-injury...
March 8, 2018: International Journal of Psychophysiology
#16
Barry P Katz, Maria Kudela, Jaroslaw Harezlak, Michael McCrea, Thomas McAllister, Steven P Broglio
BACKGROUND: Sport-related concussion and repetitive head impact exposure in contact sports continue to receive increased attention in public and medical spheres. The Concussion Assessment, Research and Education (CARE) Consortium, a multicenter cooperative, was established to study the natural history of concussion in National Collegiate Athletic Association (NCAA) collegiate student-athletes across 29 colleges and universities in the United States. The purpose of this investigation is to provide normative data from the CARE Consortium and evaluate for differences between sport categories...
March 1, 2018: Sports Medicine
#17
Gian-Gabriel P Garcia, Steven P Broglio, Mariel S Lavieri, Michael McCrea, Thomas McAllister
BACKGROUND: Many concussion assessment methods exist, but few studies quantify the performance of these methods to determine which can best assess acute concussion alone or in combination. OBJECTIVES: The objectives of this study were to evaluate: (1) selected concussion assessments for acute concussion assessment; (2) the utility of change scores for acute concussion assessment; and (3) concussion assessment capabilities when constrained to limited clinical data or objective clinical measures...
February 27, 2018: Sports Medicine
#18
Samuel R Walton, Donna K Broshek, Jason Freeman, C Munro Cullum, Jacob E Resch
PURPOSE: To investigate the frequency of valid yet suboptimal Immediate Postconcussion Assessment and Cognitive Test© (ImPACT) performance in university athletes and to explore the benefit of subsequent ImPACT administrations. METHODS: This descriptive laboratory study involved baseline administration of ImPACT to 769 university athletes per the institution's concussion management protocol. Testing was proctored in groups of ≤ 2 participants. Participants who scored below the 16th percentile according to ImPACT normative data were re-administered ImPACT up to two additional times as these scores were thought to be potentially indicative of suboptimal effort or poor understanding of instructions...
February 27, 2018: Medicine and Science in Sports and Exercise
#19
Benjamin L Brett, Andrew W Kuhn, Aaron M Yengo-Kahn, Gary S Solomon, Scott L Zuckerman
Objective: The empirical identification of risk factors associated with sport-related concussion (SRC) may improve the management of student-athletes. The current study attempted to identify and quantify bio-cognitive risk factors associated with sustaining a SRC. Methods: Cross-sectional ambispective study; level of evidence, 3. Neurocognitive testing of 12,320 middle school, high school and collegiate athletes was completed at preseason baseline and post-SRC. Univariate and multivariable logistic regressions were used to determine which pre-injury variables accurately predicted the occurrence of SRC...
February 17, 2018: Archives of Clinical Neuropsychology: the Official Journal of the National Academy of Neuropsychologists
#20
Lisa M Koehl, Brittany D Walls, Stacey L Brothers, Sarah N Morris, Amanda C Glueck, Frederick A Schmitt, David T R Berry, Dong Y Han
Sports concussions are recognized as significant injuries among young athletes. Research demonstrates that return-to-play prior to becoming asymptomatic has significant repercussions including sustained cognitive deficits. Many programs have begun to use computerized testing rather than traditional neuropsychological tests to (a) determine baseline performance, (b) track symptoms, and (c) measure symptoms following concussion. Immediate Post-Concussion Assessment and Cognitive Testing (ImPACT) is one such tool...
February 21, 2018: Applied Neuropsychology. Child
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