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Reaction time and concussion

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https://www.readbyqxmd.com/read/28236259/a-retrospective-cross-sectional-and-longitudinal-study-of-the-effects-of-age-on-cns-vital-signs-scores-in-high-school-athletes
#1
Sharon D Rogers, Patrick J Smith, Alexandra J Stephenson, D Erik Everhart
INTRODUCTION: Current recommendations for concussion management acknowledge the importance of objective assessments of neuropsychological (NP) ability, and computerized NP assessments have been widely integrated into the concussion management protocols of high schools. The optimal intervals for baseline test administration in high-school athletes are currently uncertain. The ability to accurately detect subtle NP deficits is particularly important for high-school athletes, in which concussions are increasingly recognized for adverse effects to the developing brain...
February 24, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28122770/factor-structure-of-impact%C3%A2-in-adolescent-student-athletes
#2
Paul B Gerrard, Grant L Iverson, Joseph E Atkins, Bruce A Maxwell, Ross Zafonte, Philip Schatz, Paul D Berkner
OBJECTIVE: ImPACT(®) (Immediate Post-Concussion Assessment and Cognitive Testing) is a computerized neuropsychological screening battery, which is widely used to measure the acute effects of sport-related concussion and to monitor recovery from injury. This study examined the factor structure of ImPACT(®) in several samples of high school student athletes. We hypothesized that a 2-factor structure would be present in all samples. METHOD: A sample of 4,809 adolescent student athletes was included, and subgroups with a history of treatment for headaches or a self-reported history of learning problems or attention-deficit hyperactivity disorder were analyzed separately...
February 2017: Archives of Clinical Neuropsychology: the Official Journal of the National Academy of Neuropsychologists
https://www.readbyqxmd.com/read/28119303/effects-of-sleep-loss-on-subjective-complaints-and-objective-neurocognitive-performance-as-measured-by-the-immediate-post-concussion-assessment-and-cognitive-testing
#3
Ryan P J Stocker, Hassen Khan, Luke Henry, Anne Germain
OBJECTIVE: This study examined the effects of total and partial sleep deprivation on subjective symptoms and objective neurocognitive performance, as measured by the Immediate Post-Concussion Assessment and Cognitive Testing (ImPACT) in a sample of healthy adults. METHOD: One-hundred and two, right-handed, healthy participants (between ages 18 and 30 years old) completed three consecutive nights in the sleep laboratory with concurrent continuous polysomnography monitoring...
January 23, 2017: Archives of Clinical Neuropsychology: the Official Journal of the National Academy of Neuropsychologists
https://www.readbyqxmd.com/read/28107216/analysis-of-central-and-peripheral-vision-reaction-times-in-patients-with-postconcussion-visual-dysfunction
#4
Joseph F Clark, James K Ellis, Timothy M Burns, John M Childress, Jon G Divine
OBJECTIVE: To determine whether central and peripheral vision reaction times (PVRTs) are prolonged in patients with visual dysfunction after sustaining a concussion. DESIGN: Comparison of Dynavision D2 central and PVRTs in patients with postconcussion visual dysfunction were compared with control data from a normative patient database. Concussion patients without visual dysfunction were not included in this study. SETTING: National Collegiate Athletic Association Division 1 college training room and university based, academic health center...
January 19, 2017: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/28071936/concussion-baseline-testing-preexisting-factors-symptoms-and-neurocognitive-performance
#5
Jordan E Cottle, Eric E Hall, Kirtida Patel, Kenneth P Barnes, Caroline J Ketcham
CONTEXT: Neurocognitive test scores are often considered an important aspect of concussion management. To best use these data, clinicians must understand potential factors that may influence baseline performance on these tests. OBJECTIVE: To determine preexisting factors that may influence performance on the Immediate Post-Concussion Assessment and Cognitive Test (ImPACT). DESIGN: Cross-sectional study. SETTING: Research laboratory...
February 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/27905859/baseline-neurocognitive-performance-and-clearance-for-athletes-to-return-to-contact
#6
Breton M Asken, James R Clugston, Aliyah R Snyder, Russell M Bauer
CONTEXT:  Computerized neurocognitive assessments are commonly used to manage sport-related concussion. Variations in baseline performance may influence neurocognitive performance after injury as well as the amount of time needed for an athlete to be cleared for return to sport participation. OBJECTIVE:  To investigate the relationship between mean baseline Immediate Post-Concussion Assessment and Cognitive Test (ImPACT) scores and postconcussion reliable decline as well as the association between postconcussion cognitive decline and days missed after injury...
January 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/27855264/acute-effects-of-near-infrared-light-therapy-on-brain-state-in-healthy-subjects-as-quantified-by-qeeg-measures
#7
Fred Grover, Jon Weston, Michael Weston
OBJECTIVE: Recent investigation suggests that near infrared (NIR) light may improve symptoms from mild traumatic brain injury. In addition, quantitative electroencephalography (qEEG) has shown measures correlating with concussion: P300, reaction time, and amplitude. The objective of this study was to determine whether NIR light treatment has an acute effect on brain state in healthy patients as measured by EEG. METHODS: A total of 31 healthy volunteers, between the ages of 14 and 65, underwent qEEG event-related response tests before and after a 20-min NIR light head treatment...
March 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/27747793/a-preliminary-study-of-the-effectiveness-of-an-allostatic-closed-loop-acoustic-stimulation-neurotechnology-in-the-treatment-of-athletes-with-persisting-post-concussion-symptoms
#8
Charles H Tegeler, Catherine L Tegeler, Jared F Cook, Sung W Lee, Lee Gerdes, Hossam A Shaltout, Christopher M Miles, Sean L Simpson
BACKGROUND: Effective interventions are needed for individuals with persisting post-concussion symptoms. High-resolution, relational, resonance-based, electroencephalic mirroring (HIRREM®) is an allostatic, closed-loop, acoustic stimulation neurotechnology, designed to facilitate relaxation and self-optimization of neural oscillations. METHODS: Fifteen athletes (seven females, mean age 18.1 years, SD 2.6) with persisting post-concussion symptoms received 18.7 (SD 6...
December 2016: Sports Medicine—Open
https://www.readbyqxmd.com/read/27736285/comparison-of-baseline-and-post-concussion-impact-test-scores-in-young-athletes-with-stimulant-treated-and-untreated-adhd
#9
Ryan M Gardner, Aaron Yengo-Kahn, Christopher M Bonfield, Gary S Solomon
OBJECTIVES: Baseline and post-concussion neurocognitive testing is useful in managing concussed athletes. Attention deficit hyperactivity disorder (ADHD) and stimulant medications are recognized as potential modifiers of performance on neurocognitive testing by the Concussion in Sport Group. Our goal was to assess whether individuals with ADHD perform differently on post-concussion testing and if this difference is related to the use of stimulants. METHODS: Retrospective case-control study in which 4373 athletes underwent baseline and post-concussion testing using the ImPACT battery...
February 2017: Physician and Sportsmedicine
https://www.readbyqxmd.com/read/27561090/comparison-of-neuropsychological-test-scores-of-high-school-athletes-in-high-and-low-contact-sports-a-replication-study
#10
William T Tsushima, Andrea M Siu, Nozomi Yamashita, Ross S Oshiro, Nathan M Murata
This replication study re-examined the neuropsychological effects of participation in high and low contact youth sports. Modeled after a recently published investigation, two contact sport groups of participants ages 12 to 18 were formed based on the rate of concussion in their respective sport, with the assumption that more head impacts and neuropsychological effects occur in high contact sports that have a greater number of reported concussions as compared with low contact sports. The preseason baseline ImPACT neuropsychological test scores and symptom scores of non-concussed youth athletes in a High Contact Sport (football, n = 139) and a Low Contact Sport (basketball, baseball, soccer, wrestling, volleyball, paddling, and cheerleading, n = 57) were compared...
August 25, 2016: Applied Neuropsychology. Child
https://www.readbyqxmd.com/read/27558141/a-comparison-of-cognitive-function-in-former-rugby-union-players-compared-with-former-non-contact-sport-players-and-the-impact-of-concussion-history
#11
Patria A Hume, Alice Theadom, Gwyn N Lewis, Kenneth L Quarrie, Scott R Brown, Rosamund Hill, Stephen W Marshall
AIM: This study investigated differences in cognitive function between former rugby and non-contact-sport players, and assessed the association between concussion history and cognitive function. METHODS: Overall, 366 former players (mean ± standard deviation [SD] age 43.3 ± 8.2 years) were recruited from October 2012 to April 2014. Engagement in sport, general health, sports injuries and concussion history, and demographic information were obtained from an online self-report questionnaire...
August 24, 2016: Sports Medicine
https://www.readbyqxmd.com/read/27525174/utilization-of-impact-testing-to-measure-injury-risk-in-alpine-ski-and-snowboard-athletes
#12
John Faltus, Brittney Huntimer, Thomas Kernozek, John Cole
BACKGROUND: While studies that have examined the prevalence of musculoskeletal injuries in alpine skiing and snowboarding exist, there has been no discussion of how neurocognitive deficits may influence such injuries. Recent authors have identified a possible link between Immediate Post-Concussion Assessment and Cognitive Testing (ImPACT) testing results and the prevalence of musculoskeletal injury in athletic populations. However, no study has specifically examined this in the alpine skiing and snowboard athletes who sustain injury and those that do not...
August 2016: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/27501359/lower-extremity-stiffness-changes-after-concussion-in-collegiate-football-players
#13
Dominique F Dubose, Daniel C Herman, Deborah L Jones, Susan M Tillman, James R Clugston, Anthony Pass, Jorge A Hernandez, Terrie Vasilopoulos, Marybeth Horodyski, Terese L Chmielewski
PURPOSE: Recent research indicates that a concussion increases the risk of musculoskeletal injury. Neuromuscular changes after concussion might contribute to the increased risk of injury. Many studies have examined gait postconcussion, but few studies have examined more demanding tasks. This study compared changes in stiffness across the lower extremity, a measure of neuromuscular function, during a jump-landing task in athletes with a concussion (CONC) to uninjured athletes (UNINJ). METHODS: Division I football players (13 CONC and 26 UNINJ) were tested pre- and postseason...
January 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/27474381/drop-jump-landing-varies-with-baseline-neurocognition-implications-for-anterior-cruciate-ligament-injury-risk-and-prevention
#14
Daniel C Herman, Jeffrey T Barth
BACKGROUND: Neurocognitive status may be a risk factor for anterior cruciate ligament (ACL) injury. Neurocognitive domains such as visual attention, processing speed/reaction time, and dual-tasking may influence ACL injury risk via alterations to neuromuscular performance during athletic tasks. However, the relationship between neurocognition and performance during athletic tasks is not yet established. HYPOTHESIS: Athletes with low baseline neurocognitive scores will demonstrate poorer jump landing performance compared with athletes with high baseline neurocognitive score...
September 2016: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/27456455/obesity-and-neurocognitive-recovery-after-sports-related-concussion-in-athletes-a-matched-cohort-study
#15
Young M Lee, Adela Wu, Scott L Zuckerman, Kevin M Stanko, Gregory Y LaChaud, Gary S Solomon, Allen K Sills
OBJECTIVES: Sports-related concussions (SRCs) are a significant public health concern in athletes. Data exist suggesting a link between obesity and decreased neurocognitive function, yet the effect of body mass index (BMI) on neurocognitive function and recovery after a SRC is unknown. The goal of our study was to discern the effect of BMI on recovery after SRC. METHODS: This study was a retrospective observational cohort study. Between 2013 and 2014, 7,606 athletes between the ages of 13-20 years valid baseline neurocognitive testing performed at multiple regional concussion centers sustained a concussion...
2016: Physician and Sportsmedicine
https://www.readbyqxmd.com/read/27266563/test-retest-retest-and-retest-growth-curve-models-of-repeat-testing-with-immediate-post-concussion-assessment-and-cognitive-testing-impact
#16
Arthur C Maerlender, Caitlin J Masterson, Tiffany D James, Jonathan Beckwith, Per Gunner Brolinson, Joe Crisco, Stefan Duma, Laura A Flashman, Rick Greenwald, Steven Rowson, Beth Wilcox, Tom W McAllister
Computerized neuropsychological testing has become an important tool in the identification and management of sports-related concussions; however, the psychometric effect of repeat testing has not been studied extensively beyond test-retest statistics. The current study analyzed data from Division I collegiate athletes who completed Immediate Post-Concussion Assessment and Cognitive Testing (ImPACT) baseline assessments at four sequential time points that varied over the course of their athletic careers. Administrations were part of a larger National Institutes of Health (NIH) study...
October 2016: Journal of Clinical and Experimental Neuropsychology
https://www.readbyqxmd.com/read/27168551/simple-and-procedural-reaction-time-for-mild-traumatic-brain-injury-in-a-hyperbaric-oxygen-clinical-trial
#17
Susan Churchill, R Scott Miller, Kayla Deru, Steffanie H Wilson, Lindell K Weaver
Simple reaction time (SRT) and procedural reaction time (PRT) are speed-of-processing tasks in the Automated Neuropsychological Assessment Metrics (ANAM) that may be sensitive to mild traumatic brain injury (mTBI). The investigators measured SRT and PRT throughput (correct responses per minute) at baseline, 6 weeks, and 13 weeks in military personnel with mTBI randomized to local care or 40 chamber sessions (sham-1.2 atmospheres absolute [ATA] air, hyperbaric oxygen-1.5 ATA O2). Scores were assessed at baseline using univariate analysis of variance and across time with repeated measures methods...
May 2016: Military Medicine
https://www.readbyqxmd.com/read/27045961/determining-sensitivity-specificity-of-virtual-reality-based-neuropsychological-tool-for-detecting-residual-abnormalities-following-sport-related-concussion
#18
Elizabeth Teel, Michael Gay, Brian Johnson, Semyon Slobounov
OBJECTIVE: Computer-based neuropsychological (NP) evaluation is an effective clinical tool used to assess cognitive function which complements the clinical diagnosis of a concussion. However, some researchers and clinicians argue its lack of ecological validity places limitations on externalizing results to a sensory rich athletic environment. Virtual reality-based NP assessment offers clinical advantages using an immersive environment and evaluating domains not typically assessed by traditional NP assessments...
May 2016: Neuropsychology
https://www.readbyqxmd.com/read/27025905/long-term-effects-of-concussion-on-electrophysiological-indices-of-attention-in-varsity-college-athletes-an-event-related-potential-and-standardized-low-resolution-brain-electromagnetic-tomography-approach
#19
Patrick S Ledwidge, Dennis L Molfese
This study investigated the effects of a past concussion on electrophysiological indices of attention in college athletes. Forty-four varsity football athletes (22 with at least one past concussion) participated in three neuropsychological tests and a two-tone auditory oddball task while undergoing high-density event-related potential (ERP) recording. Athletes previously diagnosed with a concussion experienced their most recent injury approximately 4 years before testing. Previously concussed and control athletes performed equivalently on three neuropsychological tests...
December 1, 2016: Journal of Neurotrauma
https://www.readbyqxmd.com/read/26979930/are-there-subconcussive-neuropsychological-effects-in-youth-sports-an-exploratory-study-of-high-and-low-contact-sports
#20
William T Tsushima, Olga Geling, Monica Arnold, Ross Oshiro
This exploratory study was designed to examine the neuropsychological effects of sports-related head trauma-specifically, repetitive subconcussive impacts or head blows that do not result in a diagnosable concussion. The researchers compared the Immediate Post-Concussion Assessment and Cognitive Testing (ImPACT) neurocognitive test scores of 2 groups of nonconcussed youth athletes (n = 282), grouped according to the frequency of concussions in their respective sports, with the assumption that more subconcussive impacts occur in sports in which there are more reported concussions...
2016: Applied Neuropsychology. Child
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