Sunday, April 24, 2011

Critics, Evidence Debunk 'Concussion Testing' in Football

By Matt Chaney

for The Phanatic Magazine

This post is an excerpt preview for a pending analysis on Chaney’s Blog, ‘Brain Trauma Stalks Football Players, Dictates Impact Game Reform,’ which will include independent experts’ recommendations for constructive steps imperative to the sport’s survival at public schools and colleges.

Today’s official effort against gridiron brain trauma recycles the old “safer football” concept.

In the NFL and trickling down to colleges, schools and youth leagues, “behavior modification” of players involves teaching “proper contact,” or “form tackling” as known in 1976. Coaches tell football players to hit without using heads, as if hogs might be taught to fly.

Current purveyors of the theory, led by Chris Nowinski and Dr. Robert Cantu of the Sports Legacy Institute, and NFL commissioner Roger Goodell—who funds the Nowinski nonprofit with $1 million—propose action reminiscent of the plug-in electric football game, with plastic players bumping across the vibrating surface, hooking at shoulders in ring dances.

And that’s only the beginning of hocus-pocus remedy for rampant head injury in American football.

While mysteries are daunting for the problem, like positive diagnosis of concussion, mere clinical intuition guides the varied protocols of diagnosis and judgment for when players are fit to compete again. No random clinical trial of legitimacy has been attempted.

“It is scary,” said Dr. Lester Mayers, concussion researcher of Pace University athletics, who joins experts like Dr. Bennet Omalu in sounding alarm over football’s touting concussion testing, which is parroted by media.

These critics warn football conducts dangerous “concussion management” based on incomplete research for assessing symptoms, and many brain-injured players are prematurely returning to contact, all ages, typically within days.

Indeed, radiology techniques are demonstrating holes in concussion testing, notably of studies at Purdue University, where functional MRI reveals that sub-concussive brain injury in prep players is completely missed by external assessments through computer.

At Purdue, teen football athletes displaying brain injury through diffusion tensor imaging, an fMRI technique, are otherwise registering normal state in the intuitive-grounded baseline tests and monitoring systems of neuropsychology.

Meanwhile, concussion testing takes a thrashing in independent peer review.

Current Sports Medicine Reports recently published another scathing analysis by Christopher Randolph in Chicago, professor of neurology at Loyola University, who details glaring faults in “baseline” testing of hot-selling ImPACT software employed by youth leagues, schools, colleges and pro sports. “The use of baseline neuropsychological testing in the management of sport-related concussion has gained widespread acceptance, largely in the absence of any evidence suggesting that it modifies risk for athletes,” Randolph observes.

Since 2005, Randolph is among reviewers for several journals who find unacceptable rates of false-positive and false-negative results for ImPACT, among popular brain assessments developed and marketed by academics and doctors associated with the NFL and benefiting from the league’s pervasive publicity machine.

“It is a major conflict of interest, scientifically irresponsible,” Randolph told ESPN The Magazine in 2007. “We are trying to get to what the real risks are of sports-related concussion, and you have to wonder why they (NFL experts) are promoting testing. Do they have an agenda to sell more ImPACTS?”

The marketing succeeds, with sales to a thousand schools and hundreds of colleges thus far, and media only increase exposure of ImPACT in the furor over concussions, especially in football.

An overwhelming majority of journalists, politicians, educators and football experts ignore the accumulating evidence rebuking concussion testing as invalid and unreliable, choosing instead to endorse the quick-fix notion and push it for mandate by law.

“With the tools to properly manage concussions and implement safety precautions, parents, coaches and students can change the culture of school sports for the better and keep our students safe on the field and thriving in the classroom,” declared U.S. Rep. George Miller, of California.

Such rhetoric confounds Mayers. “The response is infantile,” he said. “The ImPACT people have taken over the idea that somehow they can tell you when it’s OK that the athlete goes back.”

The engineers and marketers of ImPACT, neuropsychologists Mark R. Lovell and Michael W. Collins in Pittsburgh, did not respond to questions about their product recently forwarded them. Lovell is the former NFL director of NP testing, and his consulting for the Steelers franchise spurred development of ImPACT software. Collins is on the Steelers medical staff and consults for other teams. A third partner in the product is Dr. Joseph Maroon, Steelers neurosurgeon who serves on the NFL committee overseeing concussion management.

“The topic of sport-related concussion has been highly visible in the media over the last few years… and the issue of concussion management in the NFL even has reached the point of Congressional hearings,” Randolph wrote in the January-February edition of Reports. “What consistently is missing from these debates, however, is a rational, empirically-based discussion of the true risks associated with sport-related concussion, the potential for any given management strategy to modify these risks, and the actual evidence that such risk modification can be achieved. In addition, there has been little attention paid to the clinical validity or psychometric characteristics of (computer) baseline tests, despite widespread use of these measures.”

Randolph, characterizing utility of the tool as “clinical guesswork in most cases,” concluded: “It is clear that, to date, the baseline tests used in sport-related concussion management programs lack sufficient clinical validity and reliability for their intended purpose.”

Mayers cites lack of specificity and sensitivity for NP tests on the market. “Basically, they’re all unsuitable for clinical work with concussions,” said Mayers, director of sports medicine for Pace University in New York. “They don’t have the reliability, the accuracy or the validity, the three technical terms for the use of neuro-psych work. They’ll miss 20 to 25 percent of athletes who have concussions, and this has been used by the NFL and the National Hockey League, and the NCAA is considering mandating this.”

Word is that the NCAA will soon require concussion testing of all member schools, with NFL officials and experts behind the push, and Mayers says these factors helped his department adopt computer assessment, posing a dilemma for him.

Mayers authored a 2008 review published by Archives of Neurology, concluding a concussed athlete should be sidelined at least four to six weeks, but he notes football’s current “standard of practice” for brain trauma includes NP testing and fast return to play, so he conformed at Pace. “I really believe four to six weeks (recovery time) is appropriate, but it’s not the standard of community,” he said. “So I could be sued by an athlete I held out for four weeks, if he chose to do so.”

A neurology journal has approved publication of a new Mayers review, which denounces computerized concussion assessment, he said.

More medical voices doubt concussion testing. Dr. Randall Benson, imaging expert and neurologist at Wayne State University, warned Congress last year “that neuropsychology is not an exact science,” a fact echoed by Dr. Jeffrey Kutcher, of Michigan Neurosport, testifying for the same committee. “Relying on protocols is, in my opinion, potentially dangerous, clinical protocols, as they assume that concussions are similar enough to each other to fit a predetermined paradigm,” said Kutcher, who serves on committees for the NFL and American Academy of Neurology.

Last month, lawmakers heard a military concussion test fails miserably. The tool, Automated Neuropsychological Assessment Metrics, “is insensitive and nonspecific,” said Lt. Gen. Eric Schoomaker, surgeon general of the U.S. Army. “It misses about a quarter to a third of (soldiers) who are concussed and includes about 50 percent of (those) not concussed.”

In addition, insurance companies inform the military and some schools that assessments lack scientific vetting and could raise liability stakes for personnel who administer the tests in error.

Dr. Omalu, practitioner of science and law, says concussion testing amounts to “fraud” in the context of accurate, reliable diagnosis, and it can be harmful during initial days following trauma—when most injured athletes, suffering chemical disruption of brain cells, are subjected to mental strain of the programs. The online ImPACT test lasts 20 to 30 minutes and presents memory challenges involving colors, texts and forms.

“ImPACT testing is not a diagnosis tool,” said Omalu, chief medical examiner for San Joaquin County, California, and director of autopsy for the independent Brain Injury Research Institute. “It is a forensic follow-up to monitoring a patient, to evaluate the amount of damage. Using (computerized) testing in the acute phase of injury can actually make the symptoms worse.”

Doctors outside sports medicine would agree, Omalu added, and apparently many who work in athletics, given media reports of concussed youths prescribed isolation with total layoffs ranging from a month to two years.

Dustin Fink, a certified athletic trainer in Illinois, seconds Omalu. Fink discourages computerized testing until a concussed athlete is free of symptoms such as headaches, memory loss and unsteadiness. “I use the NP tests as a baseline to educate the athlete about what some signs and symptoms could become present and as a true baseline when they think that are ready to return,” said Fink, an injury authority whose popular Website, theconcussionblog.com, serves as information clearinghouse.

Fink believes “money grab” drives overuse of concussion testing, and he generally supports Omalu’s publicized stance that longer rest is needed for concussed athletes. At Shelbyville High School, where Fink works, “we are seeing recovery times on the average of 24 days,” he said. “More and more evidence suggests that a 28 to 42-day (layoff) period may be necessary.”

In previous reports on Chaney’s Blog, Omalu has proposed concussed juvenile football players be sidelined at least three months. Omalu says NFL players should rest one to three months with diagnosed concussion, depending on severity and technology for treatment, which he advocates to be functional MRI that isn’t approved by the league.

Only sports in civilian life will quickly return the brain-injured to activity, and a practice of general medicine calls for strict isolation lasting days and longer, involving no stress mentally and physically.

In the military, researcher Craig Bryan, a psychologist and professor at the University of Texas Health Science Center, recently concluded that three days of isolation, removed from sunlight, was optimum for beginning treatment of concussed soldiers.

A neural consultant for the New York Jets once discouraged use of NP testing on a football player until symptoms abated, based on a large NCAA study he’d co-authored, and quickly found himself out of the league.

During a 2004 conference in New York, neuropsychologist Bill Barr remarked that “the research indicated that the best time to do neuropsychological tests on players with concussions was after their symptoms had completely cleared, usually five to 10 days after the trauma,” Peter Keating reported for ESPN in 2006.

Jets physician Dr. Elliot Pellman confronted Barr after the conference, and the neuropsychologist ended up losing both his job with the team and his place in league research. “NFL teams, Barr understood, preferred testing players just one to two days after a concussion, allowing for quicker diagnoses and returns to play,” Keating reported.

Barr, of the Comprehensive Epilepsy Center at NYU, did not respond to a recent interview request.

Matt Chaney is a journalist, editor, teacher and restaurant worker in Missouri, USA. For more information, including about his 2009 book, Spiral of Denial: Muscle Doping in American Football, visit the homepage at www.fourwallspublishing.com.



References

Alessi, A. (2010, December 17). Telephone interview with author.

Alessi, A. (2011, March 1). NFL labor talks focused on safety. Norwich Bulletin.

Anonymous. (2010, December 27). Player X: Compeition? Player safety? Yeah, right. It’s always about the money. ESPN The Magazine, p. 16.

Bachman, R. (2011, February 12). Concussions, an injury rising among teen athletes, more profound and enduring than previously known. Portland Oregonian.

Benson, R.R. (2010, January 4). Testimony of Randall R. Benson, M.D., assistant professor of neurology, Wayne State University. In Committee on The Judiciary, U.S. House of Representatives, (2009, October 28, & 2010, January 4). Legal issues relating to football head injuries, Part I & II, (Serial No. 111-82). Washington, DC: Committee on The Judiciary.

Benson, R.R., Meda, S.A., Vasudevan, Z.K, Govindarajan, K.A., Hanks, R.A., Millis, S.R., Makki, M., Latif, Z., Copin, W., Meythaler, J., & Haacke, E.M. (2007, November 3). Global white matter analysis of diffusion tensor images is predictive of injury severity in traumatic brain injury. Journal of Neurotrauma, 24(3).

Benson, R.R., Gattu, R., Zhifeng, K., Haacke, E.M. (2010, May 1). The use of advanced MR Imaging methods in traumatic brain injury: Development of imaging biomarkers for improving diagnosis, outcome prediction and treatment. Integrated Neuroscience Session, American Academy of Neurology.

Benson, R.R. (2011, January 18). Email to author.

Blount, R. (2011, April 13). Concussion symptoms hard to recognize, treat. Minneapolis Star Tribune.

Brady, E., & Falgoust, J.M. (2011, April 14). Concussions now a hot issue as league toughens policies. USA Today.

Breer, J. (2011, March 25). Expert paints alarming picture of concussions. Southeast Missourian.

Brewin, B. (2011, March 16). Battlefield brain-injury assessment tool has high failure rate. www.nextgov.com.

Briggs, D. (2011, February 27). No messing with the head at MU. Columbia Tribune.

Brix, S. (2011, January 21). Local schools implement concussion testing programs to ensure safety of student athletes. North Shore Sun.

Broglio, S.P., Macciocchi, S.N., Ferrara, M.S. (2007, June). Sensitivity of the concussion assessment battery. Neurosurgery 60(6).

Broglio, S.P., Puetz, T.W. (2008, November 1). The effect of sport concussion on neurocognitive function, self-report symptoms and postural control: A meta-analysis. Sports Medicine, 38(1).

Calvin, B.C. (2010, October 12). NFL educating kids about concussions. Sacremento Bee.

Cameron, A. (2011, January 2). Rampant concussions raising big questions on ice. Calgary Herald.

Cantu, R. (2010, December 21). Telephone interview with author.

Charkow, R. (2011, February 21). Battling sport’s concussion crisis: Ex-wrestler’s institute studies brains of deceased athletes to better understand brain trauma. www.cbc.ca.

Cleary, L. (2011, January 26). Concussions remain a gray area. www.nbcwashington.com.

Clover, J., & Wall, J. (2010, January). Return-to-play criteria following sports injury. Clinics in Sports Medicine, 29(1).

College Coaches. (2010, October 29). College coaches: Don’t blame us for helmet hits. Sports Illustrated.

Collins, M.W., Lovell, M.R., McKeag, D.B. (1999). Current issues in managing sports-related concussion. Journal of The American Medical Association, 282(24).

Comper, P., Hutchison, M., Magrys, S., Mainwaring, L., & Richards, D. (2010, October). Evaluating the methodological quality of sports neuropsychology concussion research: A systemic review. Brain Injury, 24(11).

Concussion Law. (2011, March 13). Rep. Gallison, Sen. Felag propose expansion of new student athlete concussion law. www.tiverton.patch.com.

Concussion Tests. (2011, March 6). Panel suggests concussion tests for Butte players. www.ktvq.com.

Conferences Criticized. (2010, February 2). Conferences criticized over concussion policies. The Associated Press.

Deitch, D. (2011, January 17). Poor tackling is the cause of concussions. Delaware County Daily Times.

Doherty, J. (2010, October 18). Concussion test tests patient’s patience. www.nwtimes.com.

Donaldson, A. (2011, January 10). Athletes face tough decision when hurt. Deseret News.

Duff, M. (2009, July 14). Management of sports-related concussion in children and adolescents. ASHA Leader.

Echemendia, R.J., Herring, S., & Bailes, J. (2009). British Journal of Sports Medicine, 43.

Eckner, J.T., Kutcher, J.S. (2010, Jan-Feb). Concussion symptom scales and sideline assessment tools: A critical literature update. Current Sports Medicine Reports, 9(1).

Electric Football. (1970 circa.) Old Coleco Electric Football commercial. www.youtube.com.

Engel, J.F. (2011, February 2). Steelers linebacker cuts through the hypocrisy. Fort Worth Star-Telegram.

Epstein, D. (2011, November 1). The damage done: While concussive hits dominate the debate, a groundbreaking new study suggests that minor blows—and there can be hundreds each game—are just as traumatic. Sports Illustrated.

Epstein, D. (2011, April 13). Unique study explores cumulative effect of hits in high school football. Sports Illustrated.

Evan, F. (2010, November 1). Early warning: Even at PeeWee level, coaches struggle to balance safety concerns with teaching toughness. Sports Illustrated.

Farrey, T. (2010, May 5). Questions vital to diagnosing concussion. ESPN.com.

Fernandes, D. (2010, January 1). Local teams tackling concussions with new technology. Virginian-Pilot.

Finley, D. (2011, April 7). Insomnia linked to post-injury headaches. San Antonio Express-News.

Fitz, G. (2011, April 3). ImPACT tests coming to a high school near you. Nashua Telegraph.

Flinchpaugh, B. (2011, January 24). Fort Zumwalt tackles concussion issue. St. Louis Post-Dispatch.

Football Injuries. (2011, April 13). Youth football injuries on the rise, study finds. Health Day News, American Academy of Orthopaedic Surgeons.

Fronick, A.M. (2010, December 28). ImPACT testing helps athletes safely return to play following concussion. The People’s Tribune.

Galvan, K. (2010, November 18). Mom says school handled son’s injury the wrong way. www.myfoxhouston.com.

Giger, C. (2010, October 28). A big ImPACT: Concussion test aids in precaution. Altoona Mirror.

Goodell Talks. (2010, October 23). Goodell talks about big hits. Scout.com.

Gregory, S. (2010, February 8). Problem with football: Our favorite sport is too dangerous: How to make it safer. Time.

Grindel, S.H., Lovell, M.R., & Collins, M.W. (2001, July). The assessment of sport-related concussion: The evidence behind neuropsychological testing and management. Clinical Journal of Sports Medicine, 11(3).

Guskiewicz, K. (2011, January 8). Telephone interview with author.

Guskiewicz, K.M., McCrea, M., Marshall, S.W., Cantu, R.C., Randolph, C., Barr, W., Onate, J.A., & Kelly, J.P. (2003). The NCAA concussion study: Cumulative effects associated with recurrent concussion in collegiate football players. Journal of The American Medical Association, 290(19).

Hamilton, J. (2011, February 2). Doctors throw flags on high school concussions. www.npr.org.

Haywood, L. (2011, March 7). Diagnostic tests and treatment in traumatic brain injuries. www.access-legal.co.uk.

Head Games. (2010, Summer). Head games: Where sports injury and science connect to understand and prevent a neuro-degenerative disease. Campus & Alumni News, Boston University, p. 9.

Hibbard, M.R. (2011, April 15). Rehab for the brain after traumatic injuries. American Psychological Association.

Hobson, M. (2010, October 27). NFL looking to avoid possible lawsuits stemming from severe player concussions. Vancouver Sun.

Hopper, M. (2009, October 29). Is the NFL too dangerous? Birmingham Weekly.

Hruby, P. (2010, October 22). Future shock: The death of football. ESPN.com.

Huff, D. (1987, January 5). High school deaths, injuries raise questions about safety: Athletes’ medical care may be inadequate. Washington Post, p. C3.

ImPACT Program. (Accessed 2011, January 25). ImPACT concussion evaluation and management program. www.medpsych.net.

ImPACT Reliability. (Accessed 2011, January 14). ImPACT reliability and validity. www.impacttest.com.

ImPACT Works. (2011, January 26). How ImPACT works and what it costs. Suburban Life Publications.

Jackson, N. (2011, January 7). A former player responds to Goodell’s open letter. Deadspin.com.

Jackson, N. (2011, January 24). Telephone interview with author.

Johnson, L.S.M. (2010, October 5). Kids, concussion and ConTACT: The shortcomings of return-to-play guidelines. Neuroethics & Law Blog.

Johnson, L.S.M. (2011, January 13). Email correspondence to author.

Jolly, T. (2010, February 8). Goodell stresses a culture of safety. www.nytimes.com.

Keating, P. (2006, October 24). Doctor yes. ESPN The Magazine.

Keating, P. (2007, August 9). NFL’s concussion expert also sells equipment to the league. ESPN The Magazine.

Keating, P. (2010, December 2). Is concussion testing good enough? ESPN.com.

King, P. (2010, October 17). Brandon Meriweather, James Harrison hits deserve hefty punishment. SportsIllustrated.CNN.com.

King, P. (2010, November 1). Concussions: The hits that are changing football. Sports Illustrated.

Kivela, P. (2010, November 1). Head injuries come to mind. Napa Valley Register.

Klaft, H. (2011, March 20). Effects of concussions go beyond playing field for Western High School student. Jackson Citizen Patriot.

Knight, D. (2010, December 21). Can’t rush recovery. WashingonPost.com.

Koeske, Z. (2010, November 8). Laws aim to protect student athletes with concussions, but money is lagging. PoliticsDaily.com.

Kutcher, J. (2010, January 4). Testimony of Jeffrey Kutcher, M.D., director, Michigan NeuroSport. In Committee on The Judiciary, U.S. House of Representatives, (2009, October 28, & 2010, January 4). Legal issues relating to football head injuries, Part I & II, (Serial No. 111-82). Washington, DC: Committee on The Judiciary.

Levinthal, D. (2009, September 17). Politicians score significant cash from NFL owners, coaches and players. OpenSecrets.org.

Lovell, M.R. (2006, June). Letters to the editor. Journal of Athletic Training, 41(2).

Lowe, M. (2010, October 14). All-clear after concussion. Portland Press Herald.

Maerlender, A., Flashman, L., Kessler, A., Kumbhani, S., Greenwald, R., Tosteson, T., & McAllister, T. (2010, November-December). Examination the construct validity of ImPACT computerized test, traditional, and experimental neuropsychological measures. The Clinical Neuropsychologist, 24(8).

Magliocca, G. (2009, December). Assumption of risk and football. ConcurringOpinions.com.

Maroon, J. (2010, January 4). Testimony of Joseph Maroon, M.D., vice chair, Department of Neurosurgery, University of Pittsburgh. In Committee on The Judiciary, U.S. House of Representatives, (2009, October 28, & 2010, January 4). Legal issues relating to football head injuries, Part I & II, (Serial No. 111-82). Washington, DC: Committee on The Judiciary.

Martin, M. (2009, October 1). NFL players at risk for dementia. NPR.org.

Mayers, L. (2008, September). Return-to-play criteria after athletic concussion: A need for revision. Archives of Neurology, 65(9).

Mayers, L. (2011, January 31). Telephone interview with author.

McChesney, R. (1989). Media made sport. In Wenner, L.A. (Ed.). Media, sports & society. Newbury Park, CA: Sage Publications.

McCollum, D. (2011, April 14). Nac docs tell athletic directors to evaluate concussions. www.ktre.com. style="color:#666666">

McCory, P. (2007, December). Using a sledgehammer to crack a walnut: The modern management of concussions. Injury Prevention, 13(6).

McCrea, M., Guskiewicz, K., Randolph, C., Barr, W.B., Hammeke, T.A., Marshall, S.W., & Kelly, J.P. (2009, November). Effects of a symptom-free waiting period on clinical outcome and risk of reinjury after sport-related concussion. Neurosurgery, 65(5).

McDonald, J. (2010, September 23). Concussion cases hard to figure. ESPNBoston.com.

McKeag, D.B. (2003). Understanding sports-related concussion: Coming into focus but still fuzzy. Journal of The American Medical Association, 290(19).

McKeever, C.K., & Schatz, P. (2003). Current issues in the identification, assessment, and management of concussions in sport. Applied Neuropsychology.

McKenna, D. (2010, October 29). The NFL’s concussion politics. www.washingtoncitypaper.com.

Melchiome, C. (2010, October 30). Test helps schools play it safe with concussions. Philadelphia Inquirer.

Miller, G. (2011, January 31). Rep. George Miller: Lawmakers reintroduce legislation to protect student athletes from concussions. Columbia State.

Moore, A. (2011, March 5). From one hit in basketball practice, months of concussive injury. Lehigh Valley Express-Times.

Muchnick, I. (2011, January 11). Joseph Maroon, doctor for NFL and WWE, has it every which way on concussions. BeyondChron.

Muchnick, I. (2011, January 23). Sports concussion scandal ground zero: NFL and WWE Doc Joseph Maroon’s hype article in ‘Neurosurgery’ on Riddell Football Helmets. wrestlingbabylon.com.

Muchnick, I. (2011, April 18). Will Ritalin become the human growth hormone of sports concussion testing? www.beyondchron.org..

NFL’s Lead. (2010, November 5). Maine high schools follow NFL’s lead. Mobile Maine News.

Olson, E. (2011, January 16). NFL backs state regulations for youth concussion. St. Louis Post-Dispatch.

O’Keeffe, M. (2010, October 23). Local expert says NFL, Roger Goodell have ‘moral responsibility’ to protect players from concussions. New York Daily News.

Omalu, B. (2010, January 4). Testimony of Bennet I. Omalu, M.D., co-director, Brain Injury Research Institute, West Virginia University. In Committee on The Judiciary, U.S. House of Representatives, (2009, October 28, & 2010, January 4). Legal issues relating to football head injuries, Part I & II, (Serial No. 111-82). Washington, DC: Committee on The Judiciary.

Omalu, B. (2010, February 8). Dr. Bennet Omalu’s remarks to the House Judiciary Committee in Houston. Brain Injury Research Institute.

Omalu, B. (2011, January 15). Telephone interview with author.

Omalu, B.I., DeKosky, S.T., Minster, R.L., Kamboh, M.I., Hamilton, R.L., & Wecht, C.H. (2005). Chronic traumatic encephalopathy in a National Football League player. Neurosurgery, 57(1).
Patel, D.R., Shivdasani, V., & Baker, R.J. (2005). Management of sport-related concussion in young athletes. Sports Medicine, 35(8).

Piland, S.G., Ferrara, M.S., Macciocchi, S.N., Broglio, S.P., & Gould, T.E. (2010). Investigation of baseline self-report concussion symptom scores. Journal of Athletic Training, 45(3).

Protect Heads. (2011, March 27). Rep. Bill Pascrell: ‘Protect soldiers’ heads.’ Newark Star-Ledger.

Randolph, C., McCrea, M., & Barr, W.B. (2005, September). Is neuropsychological testing useful in the management of sport-related concussion? Journal of Athletic Training, 40(3).

Randolph, C., Barr, W.B., & McCrea, M. (2006, June). Letters to the editor. Journal of Athletic Training, 41(2).

Randolph, C. (2011, January-February). Baseline neuropsychological testing in managing sport-related concussion: Does it modify risk? Current Sports Medicine Reports, 10(1).

Rule change. (2010, November 10). Rule change on youth football hits. The Associated Press.

Schwarz, A. (2010, September 22). Despite law, town finds concussion dangers lurk. New York Times.

Schatz, P. (2010, January). Long-term test-retest reliability of baseline cognitive assessments using ImPACT. American Journal of Sports Medicine, 38(1).

Schwarz, A. (2011, February 3). Two teams show divide in debate over safety. New York Times.

Schwarz, A. (2011, February 13). Concussion protocols fail Vonn. New York Times.

Screening Limits. (2010, December 3). Football player’s death points to screening limits. The Associated Press.

Shedden, M. (2010, December 28). Concussion concerns are changing football, but it’s still hit and miss. Tampa Tribune.

Shirley, S. (2010, November 14). Area schools should adopt baseline concussion tests. Murfreesboro Daily.

Siegel, A. (2010, December 8). Varied symptoms can result from concussions. Washington Post.

Spar, J. (2011, March 4). Nowinski: Rest a month after concussion. www.weei.com.

Stanmyre, M., & Friedman, J. (2010, January 5). ImPACT testing, an important tool used to evaluate the recovery from brain injuries. Newark Star-Ledger.

Styx, K. (2011, January 19). HHS studying head injuries with use of ImPACT. Hastings Star Gazette.

Suarez, R. (2009, November 27). Hard knocks: Does playing in the NFL cause brain trauma? PBS NewsHour.

Szostak, M. (2011, April 16). Proposals debated to allow sports fees, require baseline concussion testing. Providence Journal.

Talavage, T.M., Nauman, E.A., Breedlove, E.L., Yoruk, U., Dye, A.E., Morigaki, K.M., Feuer, H., Leverenz, L.J. (2010). Functionally-detected cognitive impairment in high school football players without clinically diagnosed concussion. Journal of Neurotrauma.

Tests Key. (2010, November 18). Neurocognitive tests key to assessing concussions. The Associated Press.

Valid, Reliable. (Accessed 2011, January 25). ImPACT: Valid. Reliable. Safe. www.impacttest.com.

Vicious Play. (2010, December 30). Don’t let vicious play tarnish the Super Bowl. Christian Science Monitor.

Wilner, B. (2010, October 20). NFL players wonder what’s happening to sport after league crackdown on hits. The Associated Press.

Wilner, B. (2010, October 28). Some NFL players not sold on how safe game will be if low hits are emphasized. The Associated Press.

Wood, C. (2010, September 7). Congress and concussions, prepping for further litigation. PointOfLaw.com.

Wulf, S. (2010, November 15). Play it safer. ESPN The Magazine, p. 25.

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