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Cognitive Rest AND Concussion

Mingxiong Huang, Deborah L Harrington, Ashley Robb, Annemarie Angeles, Sharon Nichols, Angela I Drake, Tao Song, Mithun Diwakar, Charles W Huang, Victoria Risbrough, Anders M Dale, Hauke Bartsch, Scott Matthews, Jeffrey W Huang, Roland R Lee, Dewleen G Baker
Blast mild traumatic brain injury (mTBI) is a leading cause of sustained impairment in military service members and Veterans. However, the mechanism of persistent disability is not fully understood. The present study investigated disturbances in brain functioning in mTBI participants using a source-imaging-based approach to analyze functional connectivity (FC) from resting-state magnetoencephalography (rs-MEG). Study participants included 26 active-duty service members or Veterans who had blast mTBI with persistent post-concussive symptoms and 22 healthy control active-duty service members or Veterans...
October 20, 2016: Journal of Neurotrauma
Mark E Halstead, Brenda Eagan Brown, Karen McAvoy
No abstract text is available yet for this article.
September 15, 2016: British Journal of Sports Medicine
Rachel S Johnson, Mia K Provenzano, Larynn M Shumaker, Tamara C Valovich-McLeod, Cailee E Welch Bacon
No abstract text is available yet for this article.
August 24, 2016: Journal of Sport Rehabilitation
Michael J Ellis, John Leddy, Barry Willer
Historically, patients with sports-related concussion (SRC) have been managed in a uniform fashion consisting mostly of prescribed physical and cognitive rest with the expectation that all symptoms will spontaneously resolve with time. Although this approach will result in successful return to school and sports activities in the majority of athletes, an important proportion will develop persistent concussion symptoms characteristic of post-concussion syndrome (PCS). Recent advances in exercise science, neuroimaging, and clinical research suggest that the clinical manifestations of PCS are mediated by unique pathophysiological processes that can be identified by features of the clinical history and physical examination as well as the use of graded aerobic treadmill testing...
2016: Frontiers in Neurology
Tracy A Klein, Janessa M Graves
BACKGROUND: Nurse practitioners (NPs) are statutorily authorized to provide assessment and cognitive recommendations for concussion in most states. Their scope of practice includes assessment and management of concussion sequalae including anxiety, insomnia, and depression, as well as return to school and activity guidance. OBJECTIVES: Analysis of symptom-based diagnosis of mild traumatic brain injury (TBI) in adolescents, including return to school and school workload recommendations comparing psychiatric and nonpsychiatric NPs...
September 6, 2016: Journal of the American Psychiatric Nurses Association
Bruce Taubman, Florence Rosen, Jennifer McHugh, Matthew F Grady, Okan U Elci
Immediate cognitive and physical rest in the concussed patient is almost universally recommended in the concussion literature. The authors conducted a prospective observational in a primary care pediatric office to examine the effect of delayed cognitive and physical rest had on recovery time in pediatric concussion. The authors found that patients who started cognitive and physical rest immediately after injury were more likely to recover within 30 days compared to patients who delayed cognitive and physical rest for 1-7 days after their injury (67% vs 35%, P = ...
August 31, 2016: Journal of Child Neurology
Travis W Davidson, François Tremblay
OBJECTIVE: Growing evidence suggests that long-term structural and physiological alterations are present in the brain of previously concussed athletes. In this study, we sought to further explore the long-term consequences of concussions with transcranial magnetic stimulation (TMS) by examining excitability changes both within and between hemispheres. METHODS: Participants (32 young adults with and without a history of concussions (HxC)) first underwent testing to assess cognitive and motor performance using standardized tests...
October 2016: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
Richelle Mychasiuk, Harleen Hehar, Irene Ma, Sydney Candy, Michael J Esser
Despite the most common form of brain injury, there has been little progress in the prognosis and treatment of concussion/mild traumatic brain injury (mTBI). Current 'return-to-play' guidelines are conservative, deterring the initiation of physical and social activity until patients are asymptomatic; but the effects of post-injury exercise have not been adequately investigated. Therefore, this study examined the effects of voluntary exercise on concussion recovery. Using a translational rodent model of concussion, we examined the influence of exercise on injury-associated behaviours that comprise post-concussive syndrome (PCS) and gene expression changes (bdnf, dnmt1, Igf-1, pgc1-a, Tert) in prefrontal cortex and hippocampus...
October 2016: European Journal of Neuroscience
Bridgette D Semple
No abstract text is available yet for this article.
October 2016: European Journal of Neuroscience
Eileen P Storey, Stephen R Master, Julia E Lockyer, Olivia E Podolak, Matthew F Grady, Christina L Master
PURPOSE: To determine the incidence of abnormal near point of convergence (NPC) after acute concussion in pediatric patients and to describe the clinical course of such patients. METHODS: A retrospective cohort study of 275 pediatric patients 5 to 18 years of age presenting to a tertiary care children's hospital subspecialty concussion program with a new concussion between July 1, 2014 and June 30, 2015 was conducted. RESULTS: Sixty-seven out of 275 pediatric patients presenting to a subspecialty concussion referral program were found to have abnormal NPC on physical examination as measured by an accommodative rule...
July 6, 2016: Optometry and Vision Science: Official Publication of the American Academy of Optometry
James D Carson, Alexandra Rendely, Alisha Garel, Christopher Meaney, Jacqueline Stoller, Jatin Kaicker, Leigh Hayden, Rahim Moineddin, Pierre Frémont
OBJECTIVE: To compare the knowledge and use of recommendations for the management of sport-related concussion (SRC) among sport and exercise medicine physicians (SEMPs) and emergency department physicians (EDPs) to assess the success of SRC knowledge transfer across Canada. DESIGN: A self-administered, multiple-choice survey accessed via e-mail by SEMPs and EDPs. The survey had been assessed for content validity. SETTING: Canada. PARTICIPANTS: The survey was completed between May and July 2012 by SEMPs who had passed the diploma examination of the Canadian Academy of Sport and Exercise Medicine and by EDPs who did not hold this diploma...
June 2016: Canadian Family Physician Médecin de Famille Canadien
John J Leddy, John G Baker, Barry Willer
Concussion is a physiological brain injury with physical, cognitive, and emotional sequelae. The macrophysiological insult to the brain affects the autonomic nervous system and its control of cerebral blood flow. Most patients recover within 2 weeks, but some do not. Persistence of symptoms beyond the generally accepted time frame for recovery is called post-concussion syndrome (PCS). PCS is not a single entity; it is a group of disorders that requires specific forms of therapy. Rest has been the mainstay of the treatment for concussion and PCS...
May 2016: Physical Medicine and Rehabilitation Clinics of North America
Sabrina Santiago
Concussion is a common diagnosis in adolescents, particularly in those who play sports. Physical and cognitive rest is the mainstay of treatment. However, the guidelines for returning to full cognitive effort are more nebulous. This article examines the existing evidence on return-to-learn guidelines, and offers some ideas of school accommodations that can be made for students who have experienced a concussion. This article also reviews the situations in which it is recommended to seek guidance from a concussion specialist or sports medicine physician...
March 2016: Pediatric Annals
John Leddy, Andrea Hinds, Dan Sirica, Barry Willer
Concussion affects the autonomic nervous system and its control of cerebral blood flow, which may be why uncontrolled activity can exacerbate symptoms after concussion. Traditionally, patients have been advised to restrict physical and cognitive activity until all symptoms resolve. However, recent research suggests that prolonged rest beyond the first couple of days after a concussion might hinder rather than aid recovery. Humans do not respond well to removal from their social and physical environments, and sustained rest adversely affects the physiology of concussion and can lead to physical deconditioning and reactive depression...
March 2016: PM & R: the Journal of Injury, Function, and Rehabilitation
Tricia Kasamatsu, Michelle Cleary, Jason Bennett, Keith Howard, Tamara Valovich McLeod
CONTEXT: Student-athletes may require cognitive rest and academic support after concussion. Athletic trainers (ATs) in secondary schools are uniquely positioned to provide medical care and to collaborate with school professionals while managing concussions. However, little is known regarding return-to-learn policies and their implementation in secondary schools. OBJECTIVE: To examine ATs' perspectives on return to learn, cognitive rest, and communication with school professionals after concussion...
February 2016: Journal of Athletic Training
Rachel S Johnson, Mia K Provenzano, Larynn M Shumaker, Tamara C Valovich-McLeod, Cailee E Welch Bacon
: Following concussion, it is hypothesized that cognitive activity may potentially hinder patient recovery. This is based on the theory that cognitive activity alters the metabolism of the brain, which could potentially delay the healing process of a traumatic brain injury. While the recommendation of cognitive rest is often maintained and rationalized, a causal relationship between cognitive activity and symptom duration has yet to be established. Symptom severity and duration is recorded and assessed using different outcome measurement tools such as the Post-Concussion Symptom Scale (PCSS)...
February 26, 2016: Journal of Sport Rehabilitation
Elizabeth W Pang, Benjamin T Dunkley, Sam M Doesburg, Leodante da Costa, Margot J Taylor
OBJECTIVE: A mild traumatic brain injury (mTBI), or concussion, has known neuropsychological sequelae, and neuroimaging shows disturbed brain connectivity during the resting state. We hypothesized that task-based functional connectivity measures, using magnetoencephalography (MEG), would better link the neurobiological underpinnings of cognitive deficits to specific brain damage. METHODS: We used a mental flexibility task in the MEG and compared brain connectivity between adults with and without mTBI...
February 2016: Annals of Clinical and Translational Neurology
Timothy B Meier, Patrick S F Bellgowan, Andrew R Mayer
Growing evidence suggests that sports-related concussions (SRC) may lead to acute changes in intrinsic functional connectivity, although most studies to date have been cross-sectional in nature with relatively modest sample sizes. We longitudinally assessed changes in local and global resting state functional connectivity using metrics that do not require a priori seed or network selection (regional homogeneity; ReHo and global brain connectivity; GBC, respectively). A large sample of collegiate athletes (N = 43) was assessed approximately one day (1...
January 28, 2016: Brain Imaging and Behavior
Sean C Rose, Anastasia N Fischer, Geoffrey L Heyer
BACKGROUND: Concussion guidelines recommend physical and cognitive rest until all postconcussion symptoms resolve, in part because of potential health risks, including catastrophic injury related to a second impact. However, when postconcussion symptoms persist for weeks or months, these risks are poorly characterized. HYPOTHESIS: Physicians' perceived health risks and management strategies for patients with persistent postconcussion symptoms will vary. STUDY DESIGN: Cross-sectional study...
January 2016: Sports Health
Tracy A Blake, Carly D McKay, Willem H Meeuwisse, Carolyn A Emery
PRIMARY OBJECTIVE: To evaluate the evidence regarding the effect of concussion on cardiac autonomic function (CAF). INCLUSION CRITERIA: Original research; available in English; included participants with concussion or mild traumatic brain injury (mTBI) and a comparison group; included measures of heart rate (HR) and/or heart rate variability (HRV) as outcomes. Studies of humans (greater than 6 years old) and animals were included. Critical appraisal tools: The Downs and Black (DB) criteria and Structured Effectiveness Quality Evaluation Scale (SEQES)...
2016: Brain Injury: [BI]
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