Concussions in professional sports have received increased attention, which is partly attributable to evidence that found concussion incidence rates were much higher than previously thought. Further to this, professional hockey players articulated how their concussion symptoms affected their professional careers, interpersonal relationships, and qualities of life. Researchers are beginning to associate multiple/repeated concussions with Chronic Traumatic Encephalopathy, a structural brain injury that is characterized by tau protein deposits in distinct areas of the brain. Taken together, concussions impact many (...) people in the sporting community from current and former professional athletes and their families to medical and health professionals and researchers. In light of the growing awareness and sensitivity towards concussions, the purpose of this paper is to provide recommendations that are designed to improve player safety in professional hockey and address the ethical issues surrounding these suggestions. (shrink)

Concussion is a common, serious injury in youth ice hockey, affecting up to 25% of players per season by one estimate. • Bodychecking is a major cause of injury and concussion in hockey, yet some Canadian provinces allow players as young as nine years to engage in bodychecking. • Reducing rates of concussion requires eliminating bodychecking for all except elite hockey players aged 16 years and older, as per the recommendations of the Canadian Academy of Sports and (...) Exercise Medicine. (shrink)

Concussive injuries to the head and brain are relatively common in the National Football League. This is not news, since the issue has been covered in many articles in the popular press and many news specials on television. As an NFL offensive lineman for 13 years, I suffered a huge number of hits to the head — an estimated 215,000 at least. Nevertheless, I have fared better than many of the players of my era: many suffered from chronic traumatic encephalopathy. (...) For example, some of my fellow Hall of Fame players from that era, Mike Webster, Jim Ringo, John Mackey, and Joe Perry, all suffered from CTE and all are now deceased. I count myself lucky that the main malady affecting me after those many blows to the head is a 60% hearing loss in my left ear — probably due to undiagnosed concussions and particularly to thousands of head slaps by defensive players, whose first hit after the snap was often a right-handed blow to the helmet's open hole over my left ear. (shrink)

Concussion and Mild Traumatic Brain Injury affect millions of people worldwide. mTBI has been called the “signature injury” of the recent conflicts in Iraq and Afghanistan, affecting thousands of active duty service men and women, and veterans. Sport-related concussion represents a significant public health problem, with elite and professional athletes, and millions of youth and amateur athletes worldwide suffering concussions annually. These brain injuries have received scant attention from neuroethicists, and the focus of this special issue is on (...) defining the ethical considerations and developing and elucidating the neuroethical contributions to the discussion about concussion and mTBI. (shrink)

Collision sports pose a high risk of concussion. How to respond to this risk is more ethically complex when considering children and adolescents due to a) incomplete evidence regarding the impact of concussion on developing brains, b) physiological and social vulnerability, and c) the young person’s reliance on proxy decision-makers, usually parents. There is also a lack of clear definitions of (a) collision sport (vs. contact sport) and (b) what constitutes a child or adolescent. We consider whether parents (...) should be free to allow their children/adolescents to play contact or collision sport. The article analyses the harms and benefits of collision sport and methods of determining risk, before outlining our support for the precautionary principle. We then consider whether the ‘best interests’ or ‘right to an open future’ framework ought to be applied to the issue of childhood participation in collision sport. Rather than supporting a ban of child/adolescent participation in collision sport, we argue that permissibility should be decided on a sport-by-sport basis. Moreover, we apply the ‘Accountability of Reasonableness’ framework to ensure that sound ethical values guide and support protections for this vulnerable group in the absence of high-quality evidence. (shrink)

Chronic traumatic encephalopathy resulting from head hits and concussions is an unfortunate illness that has affected numerous football players, especially in the National Football League. Many of my fellow players suffer from this problem, and many have died prematurely because of it. I make some suggestions for improving the situation for retired and current players.

The Concussion in Sport Group guidelines have successfully brought the attention of brain injuries to the global medical and sport research communities, and has significantly impacted brain injury-related practices and rules of international sport. Despite being the global repository of state-of-the-art science, diagnostic tools and guides to clinical practice, the ensuing consensus statements remain the object of ethical and sociocultural criticism. The purpose of this paper is to bring to bear a broad range of multidisciplinary challenges to the processes (...) and products of sport-related concussion movement. We identify lacunae in scientific research and clinical guidance in relation to age, disability, gender and race. We also identify, through multidisciplinary and interdisciplinary analysis, a range of ethical problems resulting from conflicts of interest, processes of attributing expertise in sport-related concussion, unjustifiably narrow methodological control and insufficient athlete engagement in research and policy development. We argue that the sport and exercise medicine community need to augment the existing research and practice foci to understand these problems more holistically and, in turn, provide guidance and recommendations that help sport clinicians better care for brain-injured athletes. (shrink)

Abstract:Patients with repeated minor head injury are a challenge to our clinical skills of neurodiagnosis because the relevant evidence objectively demonstrating their impairment was collected in New Zealand (although published in theBMJandLancet) and, at the time, was mired in controversy. The effects of repeated closed diffuse head injury are increasingly recognized worldwide, but now suffer from the relentless advance of imaging technology as the dominant form of neurodiagnosis and the considerable financial interests that underpin the refusal to recognize that acute (...) accelerational injury is the most subtle and insidiously damaging (especially when seen in the light of biopsychosocial medicine), and potentially one of the most financially momentous (given the large incomes impacted and needing compensation) phenomena in modern sports medicine. The vested interests in downplaying this phenomenon are considerable and concentrated in North America where diffuse head injury is a widespread feature of the dominant winter sports code: Gridiron or American Rules football. The relationship of this to shattered lives among the brightest and best of young men and the relatively dated objective evidence are a toxic mix in terms of ethical analysis and, therefore, there is a malignant confluence of social forces that tends toward minimizing the injury. (shrink)

Current discussions about concussion in sport are based on a crucial epistemological question: whether or not we should believe that repetitive mild Traumatic Brain Injury causes Chronic Traumatic Encephalopathy. This epistemological question is essential to understanding the ethics at stake in treating these cases: indeed, certain moral obligations turn on whether or not we believe that mTBI causes CTE. After discussing the main schools of thought, namely the CTE-sceptic position and the CTE-orthodox position, this article examines the concussion (...) debate in sport and asks if its current articulation helps to answer whether or not we should call for responsive, ethical action. (shrink)

Postmortem evidence of chronic traumatic encephalopathy (CTE) in the brains of American National Football League players who suffered concussions while playing have intensified concerns about the risks of concussion in sport.1 Concussions are frequently sustained by amateur and professional players of Australia’s three most popular football codes (Australian football, rugby league, and rugby union) and, to a lesser extent, other contact sports such as soccer. This raises major concerns about possible long-term neurological damage, cognitive impairment and mental health problems (...) in players of these sports. (shrink)

Concussions are traumatic brain injuries that can result from a blow to the head or a jolt to the body. Athletes in many sports are exposed to concussion risks. There is a growing concern in sport and society about sport-related concussions (SRC) and an increasing awareness of the importance of proper diagnosis, treatment, and prevention. A traditional, reactive approach emphasizes sound protocols in cases of suspected SRC. A proactive approach involves identifying various causes of SRC and implementing preventive measures. (...) For example, to reduce SRC prevalence in Canadian youth ice hockey, a ban on body checking has been introduced. When a preventive SRC measure implies a change in the main rules of a sport, it impacts its nature and alters how it is played. This can lead to tensions between SRC prevention and sporting concerns. By employing an extended consequentialist framework that includes normative analyses of the values of sport, I will examine the possibilities and limitations of preventive SRC measures in terms of constitutive rule changes. More specifically, I will propose a consequentialist framework to determine the conditions under which athlete exposure to SRC risks in a given sport can be considered unacceptable, acceptable, and even valuable. (shrink)

Concussion in professional football is a topic that has generated a significant amount of interest for many years, partly due in recent times to the filing of the class-action litigation and the uncapped compensation injury fund and settlement involving 4,500 retired professional players and the National Football League. The proceedings claimed that the NFL, as the governing body of American football, failed in its duty to protect players’ health during their professional playing careers by exposing players to risks of (...) repetitive concussions and actively concealing links to potential long-term consequences. The NFL litigation sharpened the focus on the fundamental regulatory, governance and ethical considerations for football governing bodies, as self-regulated organisations, when governing the delicate balance between the dynamics of contact and collision sports, entertainment and player-health considerations. It also raised questions about public accountability and responsibilities to all levels of the sport through a framework of public health ethics. The NFL litigation and Congressional hearings have led to changes within the NFL and its regulatory and governance responses. A case study of the NFL responses to concussion in the sport of American football can provide insight into concussion regulation. Australian football governing bodies can align their regulatory and governance responses to concussion within their sports with the aim to avoid similar accusations, and circumvent a more coercive form of intervention. (shrink)

Drawing on the recent concussion litigation from the United States’ National Football League, the paper examines the emergence of neuroscience knowledge as part of a defining rationale for the justification and rationalization of the lawsuit. The paper argues that neuroscience knowledge is best understood as a regulatory discourse that is attached to larger social, political, and economic realities that bring it into being as a legitimate type of knowledge. This larger socio-political governance logic is one that scholars call ‘biopolitical’ (...) which emphasizes the protection of individual life over and above other ways of being. Risk discourses that frame risk-taking practices as immoral thus emerge within this biopolitical regime of governance that frame morality in terms of public health that individual citizens ought to pursue. With this in mind neuroscience knowledge plays an important role in concussion litigation. It emerges as a technology of biopolitical governance in that it is used to justify legal decisions on concussion. This is despite the fact that neuroscience knowledge remains nascent and even scientifically uncertain. Because of this, the paper argues that scholars ought to not only consider neuroscience research skeptically, but also ought to be aware of the dangers of neuroscience’s emergence as an ‘anticipatory discourse’ that has the potential to reduce human behavior to matters of the brain that thus transforms our very ontology of ourselves and the practices we perceive as ‘good’. (shrink)

Neuroscience research has improved our understanding of the long term consequences of sports-related concussion, but ethical issues related to the prevention and management of concussion are an underdeveloped area of inquiry. This article exposes several examples of conflicts of interest that have arisen and been tolerated in the management of concussion in sport (particularly professional football codes) regarding the use of computerized neuropsychological (NP) tests for diagnosing concussion. Part 1 outlines how the recommendations of a series (...) of global protocols for dealing with sports-related concussions (the 1st, 2nd and 3rd Consensus Statements on Concussion in Sport) have endorsed the use of NP testing. The development of these protocols has involved experts who have links with companies that sell computerised NP tests for concussion management. Part 2 describes how some professional football leagues—in particular the National Football League (NFL), the Australian Football League (AFL) and the National Rugby League (NRL)—have mandated specific NP testing products. They have done so on the basis of these international guidelines and by engaging experts who have conflicts of interest with NP testing companies. These decisions have also been taken despite evidence that casts doubt on the reliability and validity of NP tests when used in these ways. (shrink)

This study examined the extent to which concussion management plans at National Collegiate Athletic Association member schools were in line with NCAA Concussion Policy and best practice recommendations in absence of any process to ensure compliance. Most schools' concussion management plans were in compliance with 3 or 4 of the NCAA's 4 required components. Annual athlete education and acknowledgement was the requirement least often included, representing an area for improvement. Further, schools tended to more often include best (...) practices that were more medically-oriented, compared to best practices that were less medical in nature. (shrink)

Concussion is a form of traumatic brain injury that has been defined as a “trauma-induced alteration in mental status that may or may not involve loss of consciousness.” Terms such as getting a “ding” or getting your “bell rung” are sometimes used as colloquialisms for concussion, but inappropriately downplay the seriousness of the injury. It is estimated that between 1.6 and 3.8 million concussions occur annually in the United States as a result of participation in sports or recreational (...) activities. To date, there are no objective, biological markers for concussion; rather, the current diagnosis of concussion is dependent upon symptom reporting by the athlete. In the acute phase, concussions can result in a broad spectrum of symptoms that can be transient or last for days, weeks, or even months. Symptom prolongation is generally referred to as post-concussion syndrome. (shrink)

The 6th Consensus Statement on Concussion in Sport is authored by the Concussion in Sport Group (CiSG) and intends to provide evidence-based recommendations on concussion management for the welfare of sports participants. However, the authors of the Consensus Statement have declared many competing links to third-party groups. While the declaration of an author’s competing interests is now a widely accepted practice within academic publishing aimed at greater transparency and research integrity, it is not a measure to remove (...) the potential influence of third-party links. In the case of the Consensus Statement, this leaves uncertainty about how the potential sources of third-party bias declared by individual members of the CiSG may have influenced the CiSG’s interpretation of the existing state of evidence on concussion management and impacted the content of the recommendations contained with the Consensus Statement. Openly declaring third-party links falls short of securing trustworthiness in the Consensus Statement recommendations since it leaves end-users of the Consensus Statement with the task of interpreting the impact(s) of these competing interests with little information to guide them. This is because the authors themselves offer neither explanation nor guidance concerning potential bias arising from the competing interests that they have declared, which impinges upon the ability of readers to evaluate the trustworthiness of the content. The status quo could be improved by excluding researchers who have conflicts of interest. Nevertheless, if authors with competing interests are permitted to be part of the CiSG (as is the status quo), then I propose a novel option for increasing transparency that would require authors of the Consensus Statements to provide a reflexive explanation, not simply a declaration, of their competing interests. (shrink)

Head injuries are an inherent risk of participating in the major collision sports played in Australia. Protocols introduced by the governing bodies of these sports are ostensibly designed to improve player safety but do not prevent players suffering from repeated concussions. There is evidence that repeated traumatic brain injuries increase the risk of developing a number of long term problems but scientific and popular debates have largely focused on whether there is a causal link between concussion and chronic traumatic (...) encephalopathy. We argue that the governing bodies of collision sports played in Australia have used uncertainty about CTE to justify a “wait and see” approach instead of attempting to prevent repeated head injuries. This stance is difficult to defend when these governing bodies claim to give a high priority to protecting player welfare. (shrink)

IntroductionConcussion is a growing public health concern. No uniformly established therapy exists; neurofeedback studies report treatment value. We use infralow frequency neuromodulation to remediate disabling neurological symptoms caused by traumatic brain injury and noted improved outcomes with a novel concussion protocol. Postconcussion symptoms and persistent postconcussion symptoms are designated timelines for protracted neurological complaints following TBI. We performed a retrospective study to explore effectiveness of ILF in PCS/PPCS and investigated the value of using this concussion protocol.MethodPatients with PCS/PPCS (...) seen for their first neurology office visit or received their first neurofeedback session between 1 August 2018 and 31 January 2021 were entered. Outcomes were compared following treatment as usual vs. TAU with ILF neurotherapy. The study cohort was limited to PPCS patients; the TAU+ILF group was restricted further to PPCS patients receiving at least 10 neurotherapy sessions. Within the TAU+ILF group, comparisons were made between those who trained at least 10 sessions using concussion protocol and those who trained for at least 10 sessions of ILF regardless of protocol.ResultsAmong our resultant PPCS cohort leading persistent neurological complaints were headache, memory impairment, and brain fog. PPCS patients in TAU+ILF+CP demonstrated greater net and percent improvement of symptoms compared to PPCS subjects in TAU. PPCS patients in TAU+ILF-CP trended toward significant symptom improvements compared to TAU, and TAU+ILF+CP trended toward greater efficacy than TAU+ILF-CP.ConclusionPPCS patients who received TAU+ILF+CP demonstrated significantly greater improvement as a group when compared to TAU. When used as an integrative modality to treatment as usual in managing patients with PPCS, ILF neuromodulation with use of concussion protocol provided significant symptom improvements. (shrink)

This paper explores, first, the common law principles of personal injury litigation explored through court decisions relating to sports injuries in (primarily) England and Wales and, second, the statutory schemes relating to concussion liability and young players in the United States. It explores the difficulties of using those strategies as a means of establishing liability for injuries arising from sports-related concussion (SRC) and explains why they are of such limited utility. While proposed class actions over historically acquired injuries (...) or individual litigation over recent catastrophic injury may have some merit, and while future amendments to the US laws might remove some of their inherent flaws, the difficulties in establishing liability for personal injury will always be exacerbated by the specific characteristics of SRC and the legal, factual and evidential issues that arise. For those reasons, the paper considers the potential benefits of other means of concussion prevention and mitigation, including no-fault compensation and mandatory insurance, the more widespread use of effective, nuanced concussion protocols, and inter-disciplinary research that engages with doctrinal legal research. (shrink)

Postmortem research on the brains of American tackle football players has revealed the presence of chronic traumatic encephalopathy (CTE), a degenerative brain disease caused by repeated head trauma. Repeated concussion is a risk factor for CTE, raising ethical concerns about the long-term effects of concussion on athletes at risk for football-related concussion. Of equal concern is that youth athletes are at increased risk for lasting neurocognitive and developmental deficits that can result in behavioral disturbances and diminished academic (...) performance. In this article, we consider evidence of the effects of concussion in youth athletes, and discuss ethical duties to youth athletes and how these duties might be satisfied, given the intrinsic risks of football. Finally, we evaluate potential strategies for reducing concussions in junior football, and recommend the optimal strategy for reducing brain injury to an acceptable level while still making available the benefits of football participation for youth athletes. (shrink)

This paper examines college athletes’ perceived support for concussion reporting from coaches and teammates and its variation by year-in-school, finding significant differences in perceived coach support. It also examines the effects of perceived coach support on concussion reporting behaviors, finding that greater perceived coach support is associated with fewer undiagnosed concussions and returning to play while symptomatic less frequently in the two weeks preceding the survey. Coaches play a critical role in athlete concussion reporting.

Background:Reducing the incidence and negative consequences of concussion among youth athletes is a public health priority. In 2010, Massachusetts passed legislation aimed at addressing the issue of concussions in school athletics. We sought to understand local-level implementation decisions of the Massachusetts concussion law.Methods:A qualitative multiple-case study approach was utilized. Semi-structured interviews with school-employed actors associated with the law's implementation were used for analysis. Interview data were subjected to a conventional content analysis.Results:A total of 19 participants from 5 schools (...) were interviewed. Schools were purposefully selected from communities varying in socioeconomic status and population. Participants included 5 athletic directors, 5 coaches, 4 athletic trainers, 4 school nurses, and 1 health and wellness coordinator. Eight themes emerged regarding specific ways schools have implemented the law. Six themes emerged regarding factors influencing implementation.Conclusions:All cases employ neurocognitive testing as a means to assess concussions, place decision-making authority in athletic trainers' hands, and use a 30-minute online video to disseminate concussion education. Employing athletic trainers could pose challenges to school districts with limited financial capacity, as financial assistance from the state is not provided under the law. The validity of neurocognitive testing and the effectiveness of online concussion training need further study. Cooperation from student athletes, their parents, and physicians is necessary for full implementation of the law. (shrink)

Professional sports with high rates of concussion have become increasingly concerned about the long-term effects of multiple head injuries. In this context, return-to-play decisions about concussion generate considerable ethical tensions for sports physicians. Team doctors clearly have an obligation to the welfare of their patient (the injured athlete) but they also have an obligation to their employer (the team), whose primary interest is typically success through winning. At times, a team’s interest in winning may not accord with the (...) welfare of an injured player, particularly when it comes to decisions about returning to play after injury. Australia’s two most popular professional football codes—rugby league and Australian Rules football—have adopted guidelines that prohibit concussed players from continuing to play on the same day. I suggest that conflicts of interest between doctors, patients, and teams may present a substantial obstacle to the proper adherence of concussion guidelines. Concussion management guidelines implemented by a sport’s governing body do not necessarily remove or resolve conflicts of interest in the doctor–patient–team triad. The instigation of a concussion exclusion rule appears to add a fourth party to this triad (the National Rugby League or the Australian Football League). In some instances, when conflicts of interest among stakeholders are ignored or insufficiently managed, they may facilitate attempts at circumventing concussion management guidelines to the detriment of player welfare. (shrink)

The principle of informed consent is so firmly established in bioethics and biomedicine that the term was soon bowdlerized in common practice, such that engaging in the informed decision-making process with patients or research subjects is now often called “consenting” them. This evolution, from the original concept to the rather questionable coinage that makes consent a verb, reveals not only a loss of rhetorical precision but also a fundamental shift in the potential meaning, value, and implementation of the informed consent (...) process. Too often, the sharing of information has been replaced by the mere acquisition of agreement with the authority ostensibly offering a choice.Scholars of informed consent agree that its salience and its legitimacy derive from a fiduciary duty to inform, in order to respect, protect, and promote autonomous decision making by those to whom the duty is owed. (shrink)

Concussions are a significant public health problem worldwide. This brain injury is problematic in the paediatric population for a variety of reasons; however, the enquiry into these problems has been mainly through the biomedical perspective. This approach has impacted nursing knowledge and practice of children and youth with a concussion, primarily since other perspectives are viewed as not being objective. In this manuscript, I draw on Thomas Kuhn's view of objectivity to evaluate the biomedical perspective of concussion. I (...) utilize current research and clinical examples to illustrate the advantages and drawbacks of this perspective for nursing. From this discussion, I propose an alternative perspective to capture the complexity of paediatric concussions for nursing, a systems perspective. Although I argue for an alternative perspective to approach paediatric concussions for nursing, I maintain that the biomedical perspective can be incorporated as one part of nursing knowledge and practice for paediatric concussion. (shrink)

Concussion in sports is a topic that is receiving increasing amounts of publicity and attention. Increasing recognition of concussion as well as improving understanding of the short- and long-term physiologic effects of concussion have resulted in widespread legislation governing the recognition and treatment of sports concussion. The increasing amount of medical research in the field and oftentimes subjective symptoms of concussion leave many ethical questions to be answered.

This article critically examines the development and consensus outputs of the Concussion in Sport Group. We examine the six Consensus Statements between 2001 and 2023 to explore the challenges that the presence of contextual forces pose to the development of effective and ethically justifiable medical guidelines to manage situations involving brain-injured athletes. First, we discuss the implicit and explicit ethical framework and goals underlining the statements. Secondly, drawing on a relational account of athlete choice, we expound on the limitations (...) of the framework, concentrating on those resulting from a simplified understanding of athlete autonomy. Thirdly, we conclude by proposing a series of recommendations to improve concussion management protocols: (1) adopting a broader understanding of autonomy built upon relational accounts, beyond just the healthcare professional-athlete relationship; (2) further minimizing conflicts of interest that increase athletes’ vulnerability and hinder decision-making ability; (3) enhancing healthcare professional training to allow better adjustment of treatment plans to athletes’ contexts; and (4) promoting research on sociocultural elements affecting athletes’ vulnerability and autonomy. (shrink)

It is generally accepted that we need more research into concussions and other injuries with potential long-term effects in sport because such research underpins effective, evidence-based prevention, management, support, and treatment. This paper provides an analysis of the obligations of sports federations to support and facilitate such research, as well as an analysis of the role active participants in the sport should have in the research process. The paper focuses on concussion and concussion research, though very similar arguments (...) apply to other common sports injuries with potential long-term effects. The paper argues that sports federations have a moral obligation and a prudential interest in initiating, facilitating, and funding concussion research. This follows from their duty of care towards active participants and from considerations of reciprocity. The ability to discharge these research obligations depends on the resources available to a particular federation, but those who can discharge them should do so. The paper further argues that athletes and other active participants in sport should be involved in all aspects of the concussion research process from conception to design, i.e. that Active Participant Involvement and Engagement (APIE) should be a non-negotiable element of concussion research projects. This is supported by instrumental reasons, but also by philosophical argument based on standpoint epistemology and on ethical arguments related to the interests of active participants. Standpoint epistemology is the epistemological position that the knowledge a person has and can have depends on that person’s standpoint in the world. Keywords: Concussion, funding, participant involvement, sport, sport association, sport federation. (shrink)

The occurrence of sport-related concussions (SRCs) has emerged as a significant health concern in professional sports, with millions of concussions occurring worldwide each year. Current return-to-play (RTP) protocols after SRCs involve a multi-disciplinary approach with growing interest in genetic testing technology. Numerous studies have indicated that the gene Apolipoprotein E4 (APOE4) holds promise as a predictive factor for developing diseases after concussions and other traumatic brain injuries. Nevertheless, there is an ongoing and contentious debate surrounding the impact of SRC genetic (...) testing on the RTP decision, encompassing concerns about the potential adverse effects on individual athletes, coaches, and even the whole sport community at large not in a small degree due to incidental findings. Hence, the purpose of this article is to explore the clinical and ethical components of SRCs genetic testing and its potential integration into RTP protocols by utilizing the ACCE framework to assess the validity, utility, and ethical aspects of SRCs. (shrink)

While provisions of youth sports concussion laws are very similar, little is known as to how they are being implemented, factors that promote or impede implementation, or the level of compliance in each jurisdiction. We aimed to describe state experiences with implementation in order to inform ongoing efforts to reduce the harm of sports-related traumatic brain injury and to guide future evaluations of the laws’ impacts and the development of future public health laws. We conducted key-informant interviews in 35 (...) states with recently enacted concussion legislation. States varied considerably in their readiness and capacity for implementation. Factors facilitating implementation included existing partnerships, procedures, and resources; centralized implementation authority; prior related efforts; and involvement in the policymaking process by those now charged with implementation. Inhibitors included ambiguous statutory language, unclear delegation of authority, and compliance difficulties. Ongoing challenges persist, including primary prevention; determining which providers are qualified to make return-to-play assessments and contents of those assessments; compliance difficulties in rural and under-served areas; and unclear responsibility for enforcement. Despite the similarity of youth sports concussion laws, early evidence suggests there is considerable variation in their implementation. These findings are critical for ongoing empirical investigations to accurately evaluate the laws’ provisions and to identify successful legal approaches to protecting young athletes. (shrink)

Over the past decade, a flurry of media stories devoted to sports-related concussions have drawn attention to the previously “silent epidemic” of traumatic brain injury in athletes. From 2001 to 2009, the annual number of sports-related TBI emergency department visits in individuals age 19 and under climbed from 153,375 to 248,414, an increase of increase of 62 percent. Multiple head injuries place youth athletes at risk for serious health conditions, including cerebral swelling, brain herniation, and even death — postconcussive conditions (...) that have collectively been referred to as “second impact syndrome.” Studies have shown that children and teens — and girls, in particular — are more likely to sustain a concussion and have a longer recovery time than adults. Recent research also suggests that even subconcussive hits in children and adolescents may result in longer-term health effects such as decreased cognitive functioning, increased rates of depression, memory problems, and mild cognitive impairment. (shrink)

State concussion laws and sport-league policies are important tools for protecting public health, but also present implementation challenges. Both state laws and league policies often require athletes provide written acknowledgement of having received concussion-related information and/or of their responsibility to report concussion-related symptoms. This paper examines these requirements in two ways: an analysis of the variation in state laws and sport-league policies and a study of their effects in a cohort of collegiate football players.

Magnetic resonance imaging (MRI) can provide a number of measurements relevant to sport-related concussion (SRC) symptoms; however, most studies to date have used a single MRI modality and whole-brain exploratory analyses in attempts to localize concussion injury. This has resulted in highly variable findings across studies due to wide ranging symptomology, severity and nature of injury within studies. A multimodal MRI, symptom-guided region-of-interest (ROI) approach is likely to yield more consistent results. The functions of the cerebellum and basal (...) ganglia transcend many common concussion symptoms, and thus these regions, plus the white matter tracts that connect or project from them, constitute plausible ROIs for MRI analysis. We performed diffusion tensor imaging (DTI), resting-state functional MRI, quantitative susceptibility mapping (QSM), and cerebral blood flow (CBF) imaging using arterial spin labeling (ASL), in youth aged 12-18 years following SRC, with a focus on the cerebellum, basal ganglia and white matter tracts. Compared to controls similar in age, sex and sport (N = 20), recent SRC youth (N = 29; MRI at 8 ± 3 days post injury) exhibited increased susceptibility in the cerebellum (p = 0.032), decreased functional connectivity between the caudate and each of the pallidum (p = 0.035) and thalamus (p = 0.021), and decreased diffusivity in the mid-posterior corpus callosum (p < 0.038); no changes were observed in recovered asymptomatic youth (N = 16; 41 ± 16 days post injury). For recent symptomatic-only SRC youth (N = 24), symptom severity was associated with increased susceptibility in the superior cerebellar peduncles (p = 0.011) and reduced activity in the cerebellum (p = 0.013). Fewer days between injury and MRI were associated with reduced cerebellar-parietal functional connectivity (p < 0.014), reduced activity of the pallidum (p = 0.002), increased CBF in the caudate (p = 0.005), and reduced diffusivity in the central corpus callosum (p < 0.05). Youth SRC is associated with acute cerebellar inflammation accompanied by reduced cerebellar activity and cerebellar-parietal connectivity, as well as structural changes of the middle regions of the corpus callosum accompanied by functional changes of the caudate, all of which resolve with recovery. Early MRI post-injury is important to establish objective MRI-based indicators for concussion diagnosis, recovery assessment and prediction of outcome. (shrink)

This essay explores how evidence-based policy can be developed for sport-related concussion (SRC), focusing particularly on the role and influence of the Consensus Statements of the Concussion in Sport Group (CiSG). Three credible policy purposes are suggested: (i) to mitigate acute health impacts of concussion events in sport; (ii) to reduce or eliminate the identified causes of SRC (direct blows to the head, neck, or body); and (iii) to improve long-term brain health outcomes for athletes. Eight of (...) ten systematic reviews commissioned for the most recent Consensus Statement, and ten of its thirteen headings, address the first purpose. The primary influence of the CiSG Consensus Statements has been to improve SRC acute response practice and protocols in professional/elite sport, which has always been their primary policy purpose, although evidence of improvement is more limited in child/adolescent and recreational sport. But a primary focus on mitigating acute health impacts has crowded out other credible policy purposes of concern to stakeholder groups with whom evidence-based policy for SRC must be co-produced. No recommendations are made to improve long-term brain outcomes for athletes because concerns about imperfections in evidence are cited to question the link between such outcomes and SRC. Modifications to reduce or eliminate purposive blows to the head, neck, or body that are permitted as a structural part of the way some sports are played are given very limited attention, even when discussing prevention, where they are just one approach considered alongside protective equipment, neuromuscular strengthening, and concussion management strategies. The essay concludes that the CiSG should shift the primary policy purpose of its Consensus Statements to address the identified causes of SRC: purposive blows to the head, neck, or body. Reducing or removing causes of SRC both better safeguards children/adolescents and renders debates about the link between SRC and long-term brain health outcomes superfluous. (shrink)

Concussion is a form of mild traumatic brain injury that can occur as a result of contact to the head or other parts of the body that causes a rapid acceleration-deceleration force to the brain that may cause a functional disturbance in an individual’s ability to concentrate or learn new information. Contrary to popular belief, it is not a bruise to the brain, and there is usually nothing detectable on standard imaging such as a computed tomography or magnetic resonance (...) imaging. Symptoms and signs are therefore important to detect and include decreased levels of consciousness, headache, nausea, difficulty concentrating, memory loss, and poor coordination. These signs and symptoms usually occur within minutes after the injury but may also appear several hours or even days later. (shrink)

The idea of human-like robots with artificial intelligence (AI) engaging in sports has been considered in the light of robotics, technology and culture. However, robots with AI can also be used to clarify ethical questions in sports such as boxing with its inherent risks of brain injury and even death.This article develops an innovative way to assess the ethical issues in boxing by using a thought experiment, responding to recent medical data and overall concerns about harms and risks to boxers. (...) The thought experiment imagines a fight between a human and a robot. Critical issues about head trauma and brain injuries are then discussed. These can be summed up in two ethical questions: ‘why is it acceptable for a boxer to deliver concussive and recurrent subconcussive punches to a human head (skull and brain), powerful enough to achieve a knockout, or score more points, or to potentially inflict an injury immediately or eventually resulting in death?’, with the reciprocal question, ‘why is it acceptable to allow oneself to be injured in a like manner, possibly fatally, by an opponent?’The two questions are explored using the thought experiment in two matching perspectives: where the human boxer is attacking and the robot boxer is defending; and conversely, where the human boxer is on the receiving end of punches delivered by the robot. Each perspective opens with some general remarks, followed by an analysis of the boxing contest and eliciting some implications for future opportunities for the sport. (shrink)

The Consensus Statement of the Third International Congress on Concussion in Sport in November 2008 defined concussion as a “complex pathophysiologic process affecting the brain, induced by traumatic biochemical forces.” Definitions of concussion vary slightly between various professional organizations of neurosurgeons, neurologists, and orthopedic surgeons, but all share the common characteristics of trauma affecting the head or body resulting in transient neurologic deficits or symptoms. Underlying the symptoms of concussion is a complex pathophysiologic process at the (...) cellular level. While concussion is typically thought of as resulting from a direct impact to the head, a concussion can also be sustained as a result of an impact to the body causing the force of the impact to be transmitted to and absorbed by the brain. (shrink)