Determining brain fitness to fight: Has the time come?

Abstract Professional boxing is associated with a risk of chronic neurological injury, with up to 20–50% of former boxers exhibiting symptoms of chronic brain injury. Chronic traumatic brain injury encompasses a spectrum of disorders that are associated with long-term consequences of brain injury and remains the most difficult safety challenge in modern-day boxing. Despite these concerns, traditional guidelines used for return to sport participation after concussion are inconsistently applied in boxing. Furthermore, few athletic commissions require either formal consultation with a neurological specialist (i.e. neurologist, neurosurgeon, or neuropsychologist) or formal neuropsychological testing prior to return to fight. In order to protect the health of boxers and maintain the long-term viability of a sport associated with exposure to repetitive head trauma, we propose a set of specific requirements for brain safety that all state athletic commissions would implement.

[1]  R. Winkelman,et al.  Chronic Traumatic Encephalopathy in Contact Sports: A Systematic Review of All Reported Pathological Cases , 2015, PloS one.

[2]  B. Jordan Chronic Traumatic Encephalopathy and Other Long-term Sequelae , 2014, Continuum.

[3]  M. Dijkers,et al.  Screening for Traumatic Brain Injury: Findings and Public Health Implications , 2014, The Journal of head trauma rehabilitation.

[4]  Steven P Broglio,et al.  National Athletic Trainers' Association position statement: management of sport concussion. , 2014, Journal of athletic training.

[5]  S. Bouix,et al.  Neuroimaging in repetitive brain trauma , 2014, Alzheimer's Research & Therapy.

[6]  Helena Brisby,et al.  Increased CSF Levels of Phosphorylated Neurofilament Heavy Protein following Bout in Amateur Boxers , 2013, PloS one.

[7]  Wanyong Shin,et al.  Professional fighters brain health study: rationale and methods. , 2013, American journal of epidemiology.

[8]  Ross Zafonte,et al.  Summary of evidence-based guideline update: Evaluation and management of concussion in sports , 2013, Neurology.

[9]  Allen K. Sills,et al.  TEMPORARY REMOVAL: Consensus Statement On Concussion In Sport - The 4th International Conference On Concussion In Sport Held In Zurich, November 2012 , 2013 .

[10]  Helena Brisby,et al.  Olympic boxing is associated with elevated levels of the neuronal protein tau in plasma , 2013, Brain injury.

[11]  Allen K. Sills,et al.  Consensus statement on concussion in sport: the 4th International Conference on Concussion in Sport held in Zurich, November 2012 , 2013, British Journal of Sports Medicine.

[12]  Allen K. Sills,et al.  Consensus statement on concussion in sport--the 4th International Conference on Concussion in Sport held in Zurich, November 2012. , 2013, Clinical journal of sport medicine : official journal of the Canadian Academy of Sport Medicine.

[13]  S. Duma,et al.  Brain Injury Prediction: Assessing the Combined Probability of Concussion Using Linear and Rotational Head Acceleration , 2013, Annals of Biomedical Engineering.

[14]  L. Purcell,et al.  Boxing Participation by Children and Adolescents , 2011, Pediatrics.

[15]  M. Ziejewski,et al.  North American Brain Injury Society's Ninth Annual Conference on Brain Injury , 2011 .

[16]  M. Kamboh,et al.  Emerging Histomorphologic Phenotypes of Chronic Traumatic Encephalopathy in American Athletes , 2011, Neurosurgery.

[17]  J. Baker,et al.  Direct Hits to the Head during Amateur Boxing is Associated with a Rise in Serum Biomarkers for Brain Injury , 2011, International journal of immunopathology and pharmacology.

[18]  Jackson Streeter,et al.  Blood-based diagnostics of traumatic brain injuries , 2011, Expert review of molecular diagnostics.

[19]  M. Levy,et al.  Mortality Resulting From Head Injury in Professional Boxing , 2010, Neurosurgery.

[20]  M. Lafave Consensus statement on concussion. , 2009, Clinical journal of sport medicine : official journal of the Canadian Academy of Sport Medicine.

[21]  B. Jordan,et al.  Brain injury in boxing. , 2009, Clinics in sports medicine.

[22]  A. McKee,et al.  Chronic Traumatic Encephalopathy in Athletes: Progressive Tauopathy After Repetitive Head Injury , 2009, Journal of neuropathology and experimental neurology.

[23]  W. Orrison,et al.  Traumatic brain injury: a review and high-field MRI findings in 100 unarmed combatants using a literature-based checklist approach. , 2009, Journal of neurotrauma.

[24]  Richard Watts,et al.  Multivariate analysis of diffusion tensor imaging data improves the detection of microstructural damage in young professional boxers. , 2008, Magnetic resonance imaging.

[25]  S. Heiland,et al.  Prevalence of Cerebral Microhemorrhages in Amateur Boxers as Detected by 3T MR Imaging , 2008, American Journal of Neuroradiology.

[26]  N. Relkin,et al.  Apolipoprotein E epsilon4 associated with chronic traumatic brain injury in boxing. , 1997, JAMA.

[27]  M. Mendez,et al.  The Neuropsychiatric Aspects of Boxing , 1995, International journal of psychiatry in medicine.

[28]  T. Ohwada,et al.  Diagnostic significance of serum neuron-specific enolase and myelin basic protein assay in patients with acute head injury. , 1995, Surgical neurology.

[29]  L. Dillner Juniors' new deal meets its first deadline. , 1993, BMJ.

[30]  M. Holzgraefe,et al.  The significance of diagnostic imaging in acute and chronic brain damage in boxing. A prospective study in amateur boxing using magnetic resonance imaging (MRI). , 1992, International journal of sports medicine.

[31]  W. Hauser,et al.  CT of 338 active professional boxers. , 1992, Radiology.

[32]  W. Hauser,et al.  Serial Computed Tomography in Professional Boxers , 1992 .

[33]  J Sandover,et al.  The damaging punch. , 1985, British medical journal.

[34]  L. Cohen Should the sport of boxing be banned in Canada? , 1984, Canadian Medical Association journal.

[35]  G. Lundberg Boxing should be banned in civilized countries. , 1983, JAMA.

[36]  G. Will “Punch Drunk” , 1939 .

[37]  M. Osnato,et al.  POSTCONCUSSION NEUROSIS-TRAUMATIC ENCEPHALITIS: A CONCEPTION OF POSTCONCUSSION PHENOMENA , 1927 .

[38]  M. Neiman Protecting Professional Boxers: Federal Regulations with More Punch , 2007 .

[39]  B. Jordan,et al.  Chronic Traumatic Brain Injury Associated with Boxing , 2000, Seminars in neurology.

[40]  B. Rowlands,et al.  Neuron-specific enolase as an aid to outcome prediction in head injury. , 1996, British journal of neurosurgery.