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Reaction time and concussion

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https://www.readbyqxmd.com/read/29683918/detection-of-persisting-concussion-effects-on-neuromechanical-responsiveness
#1
Gary B Wilkerson, Dustin C Nabhan, Chad J Prusmack, William J Moreau
PURPOSE: Assessment of various indices of neuromechanical responsiveness for association with concussion history. METHODS: An observational cohort study included 48 elite athletes (34 males: 23.8 ±4.4 years; 14 females: 25.4 ±4.5 years) who performed visuomotor reaction time (VMRT) tests involving rapid manual contact with illuminated target buttons that included 2 dual-task conditions: 1) simultaneous oral recitation of scrolling text (VMRT+ST) and 2) simultaneous verbal responses to identify the right or left direction indicated by the center arrow of the Eriksen flanker test (VMRT+FT)...
April 21, 2018: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29623281/effect-of-head-impact-exposures-on-changes-in-cognitive-testing
#2
Eleni Diakogeorgiou, Theresa L Miyashita
Background: Gaining a better understanding of head impact exposures may lead to better comprehension of the possible effects of repeated impact exposures not associated with clinical concussion. Purpose: To assess the correlation between head impacts and any differences associated with cognitive testing measurements pre- and postseason. Study Design: Case-control study; Level of evidence, 3. Methods: A total of 34 National Collegiate Athletic Association Division I men's lacrosse players wore lacrosse helmets instrumented with an accelerometer during the 2014 competitive season and were tested pre- and postseason with the Sport Concussion Assessment Tool (SCAT 3) and Concussion Vital Signs (CVS) computer-based neurocognitive tests...
March 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29621016/impact-normative-data-of-ethnically-diverse-adolescent-athletes
#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
https://www.readbyqxmd.com/read/29601343/a-preliminary-investigation-of-accelerometer-derived-sleep-and-physical-activity-following-sport-related-concussion
#4
Alicia M Sufrinko, Erin K Howie, R J Elbin, Michael W Collins, Anthony P Kontos
OBJECTIVE: Describe changes in postconcussion activity levels and sleep throughout recovery in a sample of pediatric sport-related concussion (SRC) patients, and examine the predictive value of accelerometer-derived activity and sleep on subsequent clinical outcomes at a follow-up clinic visit. SETTING: Outpatient concussion clinic. PARTICIPANTS: Twenty athletes aged 12 to 19 years with diagnosed SRC. METHODS: Prospective study including visit 1 (<72 hours postinjury) and visit 2 (6-18 days postinjury)...
March 29, 2018: Journal of Head Trauma Rehabilitation
https://www.readbyqxmd.com/read/29584536/examining-practice-and-learning-effects-with-serial-administration-of-the-clinical-reaction-time-test-in-healthy-young-athletes
#5
Cindy N Nguyen, Reuben N Clements, Lucas A Porter, Nicole E Clements, Matthew D Gray, Russell T Baker
CONTEXT: The Clinical Reaction Time (RTclin ) test has been recommended as a valid test for assessing concussion and determining recovery of reaction time function following concussion. However, it is unknown whether repeat assessment, as is used in post-concussion testing, is affected by learning or practice phenomena. OBJECTIVE: To determine if a practice or learning effect is present with serial administration of the RTclin test. DESIGN: Randomized control trial...
March 27, 2018: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/29580906/post-traumatic-psychiatric-disorders-ptsd-is-not-the-only-diagnosis
#6
Yann Auxéméry
Traumatic events and their consequences are often hidden or minimised by patients for reasons linked to the post-traumatic stress disorder itself (inexpressibility, shame, depressive thoughts, fear of stigmatisation, etc.). Although post-traumatic stress disorder (PTSD) remains the most widely known disorder, chronic post-traumatic psychiatric disorders are many and varied. After a trauma, the practitioner has to check for the different clinical forms of post-traumatic psychological consequences: PTSD is not the only diagnosis...
May 2018: La Presse Médicale
https://www.readbyqxmd.com/read/29545567/long-term-effects-of-mild-traumatic-brain-injuries-to-oculomotor-tracking-performances-and-reaction-times-to-simple-environmental-stimuli
#7
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
https://www.readbyqxmd.com/read/29543036/an-examination-of-adolescent-athletes-and-nonathletes-on-baseline-neuropsychological-test-scores
#8
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 US 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...
April 2018: Journal of Athletic Training
https://www.readbyqxmd.com/read/29498030/baseline-performance-of-ncaa-athletes-on-a-concussion-assessment-battery-a-report-from-the-care-consortium
#9
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
https://www.readbyqxmd.com/read/29485429/valid-but-invalid-suboptimal-impact%C3%A2-baseline-performance-in-university-athletes
#10
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
https://www.readbyqxmd.com/read/29393677/effects-of-repetitive-subconcussive-head-trauma-on-the-neuropsychological-test-performance-of-high-school-athletes-a-comparison-of-high-moderate-and-low-contact-sports
#11
William T Tsushima, Hyeong Jun Ahn, Andrea M Siu, Kara Yoshinaga, So Yung Choi, Nathan M Murata
The aim of this study was to examine the neuropsychological test results of non-concussed high school athletes playing at three different levels of contact sports. Based on the concussion risk data of 12 different sports, a High Contact group (n=2819; wrestling/martial arts, cheerleading, track and field, football), a Moderate Contact group (n=2323; softball, basketball, soccer), and a Low Contact group (n=1580; baseball, volleyball, water polo, tennis, cross-country) were formed and compared in terms of their scores on the Immediate Post-Concussion Assessment and Cognitive Testing (ImPACT)...
February 2, 2018: Applied Neuropsychology. Child
https://www.readbyqxmd.com/read/29388850/neurophysiological-and-cognitive-impairment-following-repeated-sports-concussion-injuries-in-retired-professional-rugby-league-players
#12
Alan J Pearce, Billymo Rist, Clare L Fraser, Adrian Cohen, Jerome J Maller
BACKGROUND: Concussion is regarded as a common injury in rugby league, however no studies have explored the long-term neurophysiological and cognitive effects of repeated concussion injuries in this sport. METHODS: Former professional rugby athletes (n = 25) were compared to 25 age-matched participants with no history of a concussion. All participants completed standardised motor dexterity, reaction time, and cognitive tasks for working memory, associative learning and rule acquisition and reversal...
2018: Brain Injury: [BI]
https://www.readbyqxmd.com/read/29381402/comparison-of-baseline-impact-performance-in-amateur-motocross-riders-to-football-and-basketball-athletes
#13
Natalie K Sandel, Phillip R Worts, Scott Burkhart, Luke Henry
PRIMARY OBJECTIVE: The American Motorcyclist Association requires professional riders to undergo baseline computerized neurocognitive testing (CNT) using the Immediate Post-Concussion Assessment and Cognitive Testing (ImPACT) test for concussion management. It is recommended this practice be expanded to the amateur level, but limited research has explored whether baseline testing is necessary for youth when normative data is available. This study evaluates the utility of baseline testing for amateur riders by comparing their performance to those of traditional youth sports comprising normative datasets...
2018: Brain Injury: [BI]
https://www.readbyqxmd.com/read/29337022/reaction-time-and-joint-kinematics-during-functional-movement-in-recently-concussed-individuals
#14
Robert C Lynall, J Troy Blackburn, Kevin M Guskiewicz, Stephen W Marshall, Prudence Plummer, Jason P Mihalik
OBJECTIVE: To compare movement reaction time and joint kinematics between athletes with recent concussion and matched control recreational athletes during 3 functional tasks. DESIGN: Cross-sectional. SETTING: Laboratory. PARTICIPANTS: College-aged recreational athletes (N=30) comprising 2 groups (15 participants each): (1) recent concussion group (median time since concussion, 126d; range, 28-432d) and (2) age- and sex-matched control group with no recent concussions...
January 11, 2018: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/29308917/assessing-the-effects-of-concussion-using-the-c3logix-test-battery-an-exploratory-study
#15
John P K Bernstein, Matthew Calamia, Joshua Pratt, Shelly Mullenix
The C3Logix is a computerized concussion assessment tool that measures a wider array of symptoms (i.e., balance and oculomotor functioning) than other computerized batteries. Although the C3Logix has been used increasingly by athletic organizations at all levels of play, its utility within the concussion population has not been extensively examined. The current study aimed to determine whether the C3Logix is sensitive to the effects of concussion. A total of 54 student-athletes enrolled at a large southern university completed the C3Logix at baseline and within days following a suspected concussion (mean = 2...
January 8, 2018: Applied Neuropsychology. Adult
https://www.readbyqxmd.com/read/29278998/neurocognitive-and-fine-motor-deficits-in-asymptomatic-adolescents-during-the-subacute-period-after-concussion
#16
Richard J Servatius, Kevin M Spiegler, Justin D Handy, Kevin C H Pang, Jack W Tsao, Catherine A Mazzola
Adolescents are at high risk for sustaining concussions. There is considerable controversy regarding the sensitivity of neurocognitive tests to detect and track dysfunction in the aftermath of concussion. Two neurocognitive test batteries were compared during the subacute phase of recovery from concussion to determine sensitivity to concussion. Adolescents (ages 11-17 years) with a concussion diagnosis (eight males, seven females, 9-69 days after injury) were recruited through a concussion clinic and compared with community nonconcussed volunteers (11 males, three females)...
February 9, 2018: Journal of Neurotrauma
https://www.readbyqxmd.com/read/29198541/returning-adolescents-to-driving-after-sports-related-concussions-what-influences-physician-decision-making
#17
James MacDonald, Neha Patel, Julie Young, Emily Stuart
OBJECTIVE: To determine which data collected on an initial patient clinic visit for a sports-related concussion (SRC) might influence physicians to clear an adolescent to return to drive (RTD) after injury. STUDY DESIGN: Retrospective cohort study of 189 adolescents with a SRC referred to a hospital-based concussion clinic between June 1, 2015, and May 31, 2016. Subjects were ≥16 years with a valid driver's license (median age = 16, IQR [16, 17]). Concussion evaluations included Post-Concussion Symptom Scale, modified Balance Error Scoring System, and postinjury computerized neurocognitive testing (CNT)...
March 2018: Journal of Pediatrics
https://www.readbyqxmd.com/read/29189341/normative-data-set-of-sway-balance-mobile-assessment-in-pediatric-athletes
#18
Stevi L Anderson, Dustin Gatens, Colette Glatts, Stephen A Russo
OBJECTIVE: To examine and describe normative values for an objective, mobile measure of postural stability commonly used in concussion assessments, SWAY Balance (SWAY Medical, Tulsa, Oklahoma). DESIGN: Retrospective analysis of baseline balance assessments in a healthy pediatric population. SETTING: Baseline assessments completed by certified athletic trainers at an outpatient concussion center or sports medicine offices in Philadelphia, PA and surrounding suburban Pennsylvania and New Jersey or during an athletic trainer's baseline assessment of collegiate athletes at a National Collegiate Athletic Association (NCAA) Division-II University in Fort Lauderdale, FL...
November 16, 2017: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/29189340/influence-of-postconcussion-sleep-duration-on-concussion-recovery-in-collegiate-athletes
#19
Nicole L Hoffman, Michelle L Weber, Steven P Broglio, Michael McCrea, Thomas W McAllister, Julianne D Schmidt
OBJECTIVE: To determine whether decreased sleep duration postconcussion influences days to asymptomatic and assessment of performance throughout recovery. DESIGN: Prospective. SETTING: Institutional Clinical Research Laboratory. PATIENTS: Four hundred twenty-three collegiate athletes were diagnosed with concussion. INTERVENTIONS: Multidimensional concussion assessment battery was conducted at baseline, within 24 to 48 hours, daily [2-4 days postinjury (PI); symptoms only], once asymptomatic, and after return-to-play...
November 16, 2017: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/29168451/intraindividual-cognitive-variability-an-examination-of-anam4-tbi-mil-simple-reaction-time-data-from-service-members-with-and-without-mild-traumatic-brain-injury
#20
Wesley R Cole, Emma Gregory, Jacques P Arrieux, F Jay Haran
OBJECTIVES: The Automated Neuropsychological Assessment Metrics 4 TBI-MIL (ANAM4) is a computerized cognitive test often used in post-concussion assessments with U.S. service members (SMs). However, existing evidence remains mixed regarding ANAM4's ability to identify cognitive issues following mild traumatic brain injury (mTBI). Studies typically examine ANAM4 using standardized scores and/ or comparisons to a baseline. A more fine-grained approach involves examining inconsistency within an individual's performance (i...
February 2018: Journal of the International Neuropsychological Society: JINS
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