ANN ARBOR -- A grant from the NCAA will kick off a groundbreaking, long-term study of concussion and other head injuries among athletes, led by University of Michigan researchers and their colleagues around the country. The NCAA will provide $400,000 to begin to fund a longitudinal study by the National Sport Concussion Outcomes Study Consortium, a new group that includes three founding members from the University of Michigan: Jeffrey Kutcher, M.D., associate professor of neurology; James T. Eckner, M.D., assistant professor in physical medicine and rehabilitation; and Steven Broglio, Ph.D., assistant professor of kinesiology. With the NCAA grant, the Consortium will study more than 1,000 male and female college athletes who compete in 11 sports at three schools. Researchers hope to track those athletes throughout their lifetime to monitor long-term effects of head injuries.But the Consortium has even bigger plans. Kutcher says the group is seeking funding to expand the effort and begin enrolling athletes as early as high school, then follow them through college and even into professional careers. "We're hoping this could become a Framingham heart study for sports concussion," says Kutcher, referring to the study that began in 1948 with more than 5,000 people and has led to the identification of major cardiovascular disease risk factors."This study will be essential to improving our understanding of the risk to brain health for those who play sports. There is no data like this, it's groundbreaking. It will define the landscape." Kutcher and the U-M faculty founded the Consortium with Kevin Guskiewicz, Ph.D., chair of the Department of Exercise and Sport Science at the University of North Carolina; Chris Giza, M.D., of the Department of Neurology at UCLA; and Michael McCrea, Ph.D., professor of neurosurgery and neurology and director of brain injury research at the Medical College of Wisconsin. "There's a tremendous need for data that describe both the short and long-term health consequences of concussions," says Kutcher, who also is director of the Michigan Neurosport Concussion Program at U-M. "There are some hints, and a series of case reports in the literature, but no well-controlled study that addresses the long-term questions. To do that study, and do it correctly, requires following a population of athletes over time and documenting their brain function, while controlling for other variables." David Klossner, the NCAA's director of health and safety, said supporting the consortium's study will aid efforts to promote a safe competitive environment. "The NCAA is seeking to foster innovative research among its member universities to increase knowledge about the short-term and long-term neurological consequences of playing sports," Klossner said. "In addition to monitoring trends in concussions through the Association's injury-surveillance system, this research is another important step to enhance student-athlete safety." In this first phase of the study, the Consortium researchers will study athletes in contact sports in men's football, soccer, basketball, ice hockey, and lacrosse; women's water polo, soccer, basketball, field hockey, and lacrosse. Non-contact sport participants also will be recruited from the track and field and swimming and diving teams. Kutcher believes the data the study collects will provide a more comprehensive understanding of concussions. The short-term effects have been examined for several years, and technological advancements have helped improve the understanding of impacts on the brain by using shock sensors embedded in players' helmets. "There has been considerable attention paid to concussion recently, by the media and others, spurred by reports of National Football League players, hockey players — people who have had a long history of contact — having a very particular kind of dementing illness," says Kutcher. "But that story is only beginning to be told. We need to do the appropriate research to figure out the scope of the problem." Kutcher also directs the NBA's concussion program, is a consultant to the NHL Players Association and the team neurologist for the University of Michigan Athletic Department. He has been instrumental in crafting the concussion policies of the NCAA, Big Ten and Mid-American Conference. He has testified before U.S. Congress on helmet and equipment safety. For more information and free online courses about recognizing and responding to concussions, go to https://www.michiganneurosport.com/ SOURCE University of Michigan Health System Read more here: https://www.sacbee.com/2012/03/14/4336415/groundbreaking-long-term-study.html#storylink=cpy Photo: Wikimedia Commons

Researchers at Nationwide Children's Hospital in Columbus, Ohio, found that of the 14,635 high-school sports injuries reported during the 2008-2010 school year, 13% were concussions. The majority of them were uncomplicated, in fact, 40% of the students who suffered concussions saw their symptoms disappear within three days. Most returned to play within three weeks, but a significant number -- about 25% -- returned to play the same day they were injured, a situation many state concussion laws are designed to address. "This improper practice was widespread," noted researchers Mallika Marar, Natalie McIlvain, Sarah Fields and R. Dawn Comstock, who found it in 12 of the 20 sports they studied. "This clearly violates the consensus statement on sports-related concussion, which recommends that no adolescent athlete who sustains a concussion should return to play on the day of the injury,"reported WPTV.com. Other findings included: Most common symptoms: headache (94.2%), dizziness (75.6%) and difficulty concentrating (54.8%) More than one: Eleven percent had suffered concussions before, highest rate of recurrence was boys' wrestling (20%) Most by number: football (47%) followed by girls' soccer (8.2%) Most common practices/games: games; exception was cheerleading, participants were 10x more likely to be hurt during practice Most by gender: boys; although concussions in girls' sports represented a higher number of overall injuries Most common occurrence: athlete-to-athlete contact; girls were more likely to suffer a concussion from striking the ground or being struck by another players' piece of equipment such as a hockey stick The study was published in the January edition of the American Journal of Sports Medicine. Source: Study: High school athletes return from concussion too soon -- WPTV.com Questions/comments? Contact Jean Rickerson at Jean@SportsConcussions.org

As a new womens' lacrosse referee I initially had mixed feelings about the ongoing debate on the use of helmets in play. Listening to the discussion in referee training sessions that stressed the finesse of the game and the need of the referee to control or slow down play, verses the struggle I felt as a person having a medical degree and realizing the potential hazards of brain injuries, I tried to see both sides. Some people think that helmets will make the game more physical. But after my first official day as a referee standing on the sidelines watching my daughter’s middle school team begin their game, my beliefs became clear. Female lacrosse players need to wear helmets. During the first eight minutes of the game there were three injuries, one related to a child’s head and neck. This player had been checked from behind causing her neck to snap back. She then fell and hit her head on the turf. I witnessed every parent’s/referee’s/coach’s nightmare: a player down and seizing. To my dismay, this player returned to play in less than three weeks and went on to have another concussion and seizure. She is now barred from impact sports for the rest of her life. What I found out about my local school district surprised me and motivated me to try to educate parents and give people the best information possible. After speaking to the athletic trainers in my school district, I was made aware that high school students are given baseline concussion testing but younger players are not. We are now in the process of offering that testing to younger players. Also, while coaches can have in-person or online concussion training it seems that more could be done to help the coaches and parents become more informed about concussions. There are numerous issues that could explain the high incidence of concussions in women's lacrosse. One might be to consider the nutrition and health of girls playing the game today. Both men and women today are better nourished and physically stronger, faster and more powerful than the players of previous years. This has created a weight imbalance as some players can actually outweigh others by a large margin. The physics of combining speed and extra mass can lead to a dangerous combination. Equipment has also evolved to allow for lighter and faster sticks, causing unintended hits in some instances, I'm sure. Another factor is the increase in new players due to the popularity of the sport. Putting players of different skill levels in the same game can set up a difficult dynamic. It is important for players to be aware of their body position in space and reference to other players. This is a skill that comes with time and coaching. Coaching is another aspect of the game that helps teams work together better and control the speed of their game. Neck strengthening exercises can decrease the whiplash motion often caused by a hit to the cranial region. As for me, I have now completed my first season as a referee. I feel that helmets and proper body equipment in womens' lacrosse will make the game safer for everyone. My feeling is that there are too many factors that increase the potential for head injuries and we should mitigate them as best we can. While I realize helmets do not prevent concussions, I do believe they would be helpful to protect young women from unintended hits to the head. Dr. Lori McGowan is an Adjunct Professor of Biology at Harrisburg Area Community College in Harrisburg, Pennsylvania.

Starting in 2012, helmet reconditioners will no longer accept helmets 10 years or older. Leagues that have depended on reconditioning their helmets every year and cannot afford replacement gear will be most affected. Although helmets do not prevent concussions, most experts agree that newer ones are preferable to used, and an older, unreconditioned helmet might increase the risk of injury. Many leagues ask their booster clubs for assistance with fundraising as this issue has now reached a critical phase. Limited grants for replacement helmets by leading manufacturers are now available for eligible youth leagues in several areas around the country. Applications are now being accepted for youth football programs seeking to replace their league's helmets before the start of the 2012 season. The Centers for Disease Control and Prevention, USA Football and partnering organizations have introduced a helmet replacement program for youth in underserved communities. It is estimated the program will provide almost 13,000 new helmets to athletes in low-income communities beginning in July 2012. To qualify a league must meet the following criteria: - Operate a youth football league (no middle or high school programs) - Live in one of the following areas: Cleveland, New Orleans, New York, or the San Francisco Bay area - Serve an economically disadvantaged area The application process requires registration at USA Football, the governing body for youth football under the NFL. The application is accessible only after viewing a concussion awareness video and pledging to utilize USA Football's resources to educate members of your league before the 2012 season. A visit from an official to verify the ages and number of helmets exceeding 10 years of age in your inventory will occur by mid-June, with new helmets arriving prior to the beginning of the 2012 season. Participating helmet manufacturers include Rawlings, Xenith, Riddell and Schutt. Questions/comments? contact Jean Rickerson at jean@SportsConcussions.org

The brain appears to be wired more like the checkerboard streets of New York City than the curvy lanes of Columbia, Md., suggests a new brain imaging study. The most detailed images, to date, reveal a pervasive 3D grid structure with no diagonals, say scientists funded by the National Institutes of Health. “Far from being just a tangle of wires, the brain’s connections turn out to be more like ribbon cables -- folding 2D sheets of parallel neuronal fibers that cross paths at right angles, like the warp and weft of a fabric,” explained Van Wedeen, M.D., of Massachusetts General Hospital (MGH), A.A. Martinos Center for Biomedical Imaging and the Harvard Medical School. “This grid structure is continuous and consistent at all scales and across humans and other primate species." Wedeen and colleagues report new evidence of the brain’s elegant simplicity March 30, 2012 in the journal Science. The study was funded, in part, by the NIH’s National Institute of Mental Health (NIMH), the Human Connectome Project of the NIH Blueprint for Neuroscience Research, and other NIH components. “Getting a high resolution wiring diagram of our brains is a landmark in human neuroanatomy,” said NIMH Director Thomas R. Insel, M.D. “This new technology may reveal individual differences in brain connections that could aid diagnosis and treatment of brain disorders.” Knowledge gained from the study helped shape design specifications for the most powerful brain scanner of its kind, which was installed at MGH’s Martinos Center last fall. The new Connectom diffusion magnetic resonance imaging (MRI) scanner can visualize the networks of crisscrossing fibers – by which different parts of the brain communicate with each other – in 10-fold higher detail than conventional scanners, said Wedeen. “This one-of-a-kind instrument is bringing into sharper focus an astonishingly simple architecture that makes sense in light of how the brain grows,” he explained. “The wiring of the mature brain appears to mirror three primal pathways established in embryonic development.” As the brain gets wired up in early development, its connections form along perpendicular pathways, running horizontally, vertically and transversely. This grid structure appears to guide connectivity like lane markers on a highway, which would limit options for growing nerve fibers to change direction during development. If they can turn in just four directions: left, right, up or down, this may enforce a more efficient, orderly way for the fibers to find their proper connections – and for the structure to adapt through evolution, suggest the researchers. Obtaining detailed images of these pathways in human brain has long eluded researchers, in part, because the human cortex, or outer mantle, develops many folds, nooks and crannies that obscure the structure of its connections. Although studies using chemical tracers in neural tracts of animal brains yielded hints of a grid structure, such invasive techniques could not be used in humans. Wedeen’s team is part of a Human Connectome Project Harvard/MGH-UCLA consortiumExternal Link: Please review our disclaimer. that is optimizing MRI technology to more accurately to image the pathways. In diffusion imaging, the scanner detects movement of water inside the fibers to reveal their locations. A high resolution technique called diffusion spectrum imaging (DSI) makes it possible to see the different orientations of multiple fibers that cross at a single location – the key to seeing the grid structure. In the current study, researchers performed DSI scans on postmortem brains of four types of monkeys – rhesus, owl, marmoset and galago – and in living humans. They saw the same 2D sheet structure containing parallel fibers crossing paths everywhere in all of the brains – even in local path neighborhoods. The grid structure of cortex pathways was continuous with those of lower brain structures, including memory and emotion centers. The more complex human and rhesus brains showed more differentiation between pathways than simpler species. Among immediate implications, the findings suggest a simplifying framework for understanding the brain’s structure, pathways and connectivity. The technology used in the current study was able to see only about 25 percent of the grid structure in human brain. It was only apparent in large central circuitry, not in outlying areas where the folding obscures it. But lessons learned were incorporated into the design of the newly installed Connectom scanner, which can see 75 percent of it, according to Wedeen. Much as a telescope with a larger mirror or lens provides a clearer image, the new scanner markedly boosts resolving power by magnifying magnetic fields with magnetically stronger copper coils, called gradients. Gradients make it possible to vary the magnetic field and get a precise fix on locations in the brain. The Connectom scanner’s gradients are seven times stronger than those of conventional scanners. Scans that would have previously taken hours – and, thus would have been impractical with living human subjects – can now be performed in minutes. “Before, we had just driving directions. Now, we have a map showing how all the highways and byways are interconnected,” said Wedeen. “Brain wiring is not like the wiring in your basement, where it just needs to connect the right endpoints. Rather, the grid is the language of the brain and wiring and re-wiring work by modifying it.” Curvature in this DSI image of a whole human brain turns out to be folding of 2D sheets of parallel neuronal fibers that cross paths at right angles. This picture came from the new Connectom scanner.Source: Van Wedeen, M.D., Martinos Center and Dept. of Radiology, Massachusetts General Hospital and Harvard University Medical School Reference Wedeen VJ, Rosene DL, Ruopeng W, Guangping D, Mortazavi F, Hagmann P, Kass JH, Tseng W-YI. The Geometric Structure of the Brain Fiber Pathways: A Continuous Orthogonal Grid. March 30, 2012 Science. ### The mission of the NIMH is to transform the understanding and treatment of mental illnesses through basic and clinical research, paving the way for prevention, recovery and cure. For more information, visit the NIMH website. The NIH Blueprint for Neuroscience Research is a cooperative effort among the NIH Office of the Director and the 15 NIH Institutes and Centers that support research on the nervous system. By pooling resources and expertise, the Blueprint supports transformative neuroscience research, and the development of new tools, training opportunities, and other resources to assist neuroscientists. About the National Institutes of Health (NIH): NIH, the nation's medical research agency, includes 27 Institutes and Centers and is a component of the U.S. Department of Health and Human Services. NIH is the primary federal agency conducting and supporting basic, clinical, and translational medical research, and is investigating the causes, treatments, and cures for both common and rare diseases. For more information about NIH and its programs, visit the NIH website. Questions/comments? contact Jean Rickerson at jean@SportsConcussions.org

Common sense has led many to believe that youth football players can't possibly sustain high-impacts like their adult counterparts. But veteran correspondent Stone Phillips' report "Hard Hits, Hard Numbers," features researchers at Virginia Tech (VT) who recently turned that theory upside down when they analyzed impact data from the helmets of 7- and 8-year old players in Montgomery County, Virginia. Accelerometers placed inside seven helmets wirelessly transmitted data to scientists on the sideline for a season's worth of practices and games, with surprising results. The bottom line? Maybe it's time to take another look at practices, drills, and helmet design to minimize the forces absorbed during an average season. Regardless of the significance of the impact, none of the players sustained concussions during the season. Therein lies an enduring mystery, why small impacts can cause concussions in some players while others walk away from big hits. The force of acceleration is often measured in g. Fighter pilots may "pull" 9g in an F-16, a sneeze may register 3g. They're part of everyday life. But because of the heightened interest in sports-related concussions, researchers are looking at a multitude of ways to reduce brain impacts for everyone from adults to youth. But first, they had to identify if there was even an issue at all. Worth a look The VT study was the first of its kind to measure the impacts sustained during youth football. Having worked for nine years recording over 150,000 hits with the helmet impact system at the university, researchers turned their attention to an area youth league. The forces averaged about 15g, meaning half of the hits measured below that level, the other half above. In one case, well above. One hit measured 100g, a big hit by college standards. Most of the more forceful impacts came during practice. Highlights from PBS NewsHour include: - reseachers believe 98g or above is a red flag for a possible concussion - a total 753 impacts were recorded - average player sustained 107 impacts in one season; high school players average about 500; college players sustain about 1,000/season - there were 38 impacts of 40g or greater; almost every one occurred during practice - six impacts measured over 80g the lower range VT researchers consider to be the risk of concussion - youth football players lack strong neck and chest muscles of older players to maintain head stability - 50, 60, 70g loads were surprising - location of impact is important as are individual differences and tolerances - there is more helmet-to-helmet contact in youth football than occurs in older players; most impacts occurred to the front of the helmet - more head-to-ground impacts found at college level Changes afoot Researchers concluded that addressing changes in practice would likely reduce the number of impacts per season, an important factor in any youth sport. Less contact drills, fewer contact practices and other modifications would be beneficial, particularly as the effects of sub-concussive hits, impacts that may cause changes in the brain without causing symptoms, continue to be studied. Source: Stone Phillips Reports Pint-Size Footbal Players Take Big-League Hits -- PBS NewsHour -- April 3, 2012 Questions/comments? contact Jean Rickerson at jean@SportsConcussions.org

Reducing the number of concussions suffered by student-athletes is on the minds of many, including those that lead some of the most prestigious universities in the nation. Soon, following in the footsteps of changes made last year to Ivy League football programs, athletes in other sports may see the adoption of more protective measures as well. Ivy League football players saw significant changes in their practices last season after the eight presidents, two of whom are medical doctors, acted to reduce the number of impacts to their student-athletes' brains in an effort to minimize concussions. In July 2011 the Ivy League Concussion Committee developed a new set of regulations limiting full-contact practices to two per week, three less than allowed by the NCAA. In addition, of the preseason "two-a-days" only one can be full contact. Similar sport-specific regulations may be applied to other activities such as lacrosse, hockey, and soccer in the near future. “We are leading other conferences,” said Ivy League Executive Director Robin Harris. “I don’t know of any conference looking at this in the same manner that we are. We really see this as an area that we can be a leader in terms of the medical care safety of our athletes as well as in terms of the research we contribute to our collective understanding of concussions and athletics,” according to the The Harvard Crimson. Ivy League Deputy Executive Director Carolyn Campbell- McGovern was apart of this game change, “A lot of the recommendations from the football report were naturally going to be applied to other sports as well, particularly the education components, sideline testing components, and any other of those types of enhancement,” Campbell-McGovern said. Recommendations for each sport, lacrosse, soccer, and hockey, will likely be different. On Wednesday, the Ivy League Concussion Committee met in New York to discuss what changes will be made. The committee will also review recommendations made by each sport's subcommittee. Athletic trainers, including Harvard Head Athletic Trainer Brant Berkstresser, physcians, and administrators make up the concussion committee. It is co-chaired by presidents David Skorton of Cornell, and Jim Kim of Dartmouth. Harvard Medical School instructor and doctor at Children's Hospital Boston's Division of Sports Medicine, Michael J. O'Brien has ideas for change. He says he sees 300-400 concussions every month, 98 percent of them sports-related. “The bigger risk is the athlete who gets injured, flies under the radar a little bit and gets a hit a few more times in that game or in the next two or three games. The injuries to that athlete tend to be exponential, their threshold to injury is much worse, and the damage is exponential. Using computer based testing to get objective information rather than just reporting symptoms would help," O'Brien said. Source: Ivy League Aims to Abate Concussions - The Harvard Crimson March 30, 2012 Questions/comments? contact Jean Rickerson at Jean@SportsConcussions.org

It is not yet known why girls suffer concussions at a higher rate than boys. The most prevalent theories range from lesser neck and upper body strength, to better reporting among females, to hormonal differences. Researchers at Emory University in Atlanta are currently in the third phase of a clinical trial designed to determine if the hormone progesterone, normally associated with female reproductive processes, can protect damaged neurons. Administered within four hours of the injury and lasting for three days, results of the treatment have been positive so far. Although catastrophic injuries in sports are rare, the question regarding applicability of a related treatment for concussion remains open. Pilot study highlighted efficacy Every 15 seconds, someone in the United States sustains a significant traumatic brain injury. Approximately 2 million adults and children in the United States suffer from traumatic brain injuries each year - leading to 50,000 deaths and 80,000 new cases of long-term disability, according to the Centers for Disease Control and Prevention. Despite the enormity of the problem, scientists have failed to identify effective medications to improve outcomes following a traumatic brain injury. Emory researchers, however, concluded in an earlier pilot clinical trial that giving progesterone to trauma victims shortly following brain injury appears to be safe and may reduce the risk of death and long-term disability. Their previous three-year study, called ProTECT I (Progesterone for Traumatic brain injury--Experimental Clinical Treatment), enrolled 100 participants at Grady Memorial Hospital. It was designed to evaluate whether progesterone can be administered intravenously in a safe and reliable way. "We found evidence that progesterone is not only safe for use in patients suffering from traumatic brain injuries," says Wright. "We also found a 50 percent reduction in mortality in those patients treated with progesterone. Even though this was a small pilot study, we found signs that progesterone improved functional outcomes and reduced disability in patients with moderate brain injury. "By expanding our test sites to 17 major trauma centers across 15 states and enrolling more than 1,000 patients, we hope to confirm these preliminary findings and determine if progesterone benefits victims of acute traumatic brain injury," says Wright. Progesterone common in males and females Progesterone is naturally present in small but measurable amounts in the brains of males and females. Human brain tissue is loaded with progesterone receptors. Laboratory studies suggest that progesterone is critical for the normal development of neurons in the brain and exerts protective effects on damaged brain tissue. Donald G. Stein, PhD, Asa G. Candler Professor of Emergency Medicine, Emory School of Medicine, and director of Emory's Department of Emergency Medicine Brain Research Laboratory, pioneered discoveries regarding the effect of progesterone following traumatic brain injury - first discovering the neuro-protective properties of progesterone in the laboratory more than 25 years ago. "The results that we are now seeing, and hope to continue validating, are an incredible and gratifying reward for more than 25 years of concentrated research," says Stein. "My work first started when I began to notice evidence that women tended to respond to treatment and recover better than men after suffering from brain injury and stroke. Many people do not realize that it's not just a female hormone; both men and women produce progesterone directly in the brain, as well as other tissue. "Ultimately, we learned that progesterone basically does in brain injuries what it also does during fetal development - protect cells and tissue," says Stein. "To now witness the translation of this laboratory research into a treatment that may have life-saving benefits is breathtaking." Source: A Hormonal Remedy for Brain Injuries is Explored --The New York Times -- June 21, 2012 Atlanta To Serve as National Epicenter for Promising Phase III Brain Injury Treatment Trial - Emory University Photo courtesy of (c) 2008 Eddy Grady@creativecommons.com Questions/comments? contact Jean Rickerson at jean@SportsConcussions.org

As the on-ice passion of the NHL playoff games intensifies so do the penalties, particularly for vicious hits to the head. Saturday's games resulted in three separate incidents that will highlight the league's commitment to cracking down on illegal hits that may, and often do, cause concussions. Brendan Shanahan, Senior Vice President, Player Safety and Operations held hearings on two of the three violations Sunday afternoon. The third is scheduled for Monday. The hits are reviewed on video and the suspensions are explained in great detail by Shanahan on the NHL network (see videos below). Shanahan suspended New York Rangers forward Carl Hagelin for an illegal hit that forced opponent Daniel Alfredsson's head into the glass. Alfredsson, the Senators captain, left the game for evaluation and his status for the rest of the playoffs is uncertain. On Monday the team announced he had suffered a concussion on the play. This is Hagelin's first major penalty. The Wall Street Journal reports that disciplinary action against Hagelin may increase if Alfredsson, who has a history of concussions, is unable to return to the series. A one-game suspension was also issued Sunday for Ottawa Senators defenseman Matt Carkner for continuing to pummel an "unwilling opponent," Rangers forward Brian Boyle, who was knocked to the ice after Carkner delivered two powerful blows to his head. Carkner continued to hit Boyle as he lay on the ice. Boyle did not return the punches. Carkner was classified as an "aggressor" under NHL rules and was assessed a minor penalty for instigating, a major penalty for fighting and a game misconduct. Blackhawks forward Andrew Shaw is scheduled for a hearing on Monday for a shoulder-to-head hit on Coyotes goalie Mike Smith that left him down on the ice writhing in pain. Shaw earned a charging major and game misconduct on the play. Smith remained in the game. Last Thursday, Vancouver Canucks forward Byron Bitz was suspended for two games for a vicious hit to the head on Los Angeles Kings forward Kyle Clifford the night before. Clifford's head was shoved into the glass causing him to miss at least one game. In addition to the suspension Bitz was assessed a major penalty for boarding and a game misconduct the night of the game. Carl Hagelin/ Daniel Alfredsson Matt Carkner/ Brian Boyle Byron Bitz/ Kyle Clifford Source: NHL Network Questions/comments? Contact Jean Rickerson at jean@SportsConcussions.org