Articles

Article 1:
This article, done by multiple MD's and PhD's talks about what symptoms occur, and the severity of concussions. These doctors go in depth as to why some athletes may be more vulnerable to a second concussion than others. Repeated injuries, even mild injuries, over time can lead to serious brain damage. They say that early detection through a thorough knowledge of the signs and symptoms and specific documentation of the injury is critical to the management of concussions.
http://doctors.in.gr/pdf/ped/ped4.pdf
Wojtys, Edward M., David Hovda, Greg Landry, Arthur Boland, Mark Lovell, Michael McCrea, and Jeffrey Minkoff. Concussions in Sports. American Orthopaedic Society for Sports Medicine, 1999. Web. 13 Mar. 2013.

Article 2:
A major issue with concussions, is knowing when a player is ready enough to play again. JAMA network goes in depth with information about symptoms, and when an athlete is actually ready to play again. This journal also talks about the controversial guidelines on player readiness within the medical community. This controversy comes from the lack of scientific foundation, and therefore, in most cases not taken seriously.
http://jama.jamanetwork.com/article.aspx?articleid=192220
Collins, Michael W., PhD, Mark R. Lovell, PhD, and Douglas B. Mckeag, MD. "Current Issues in Managing Sports-Related Concussions." The Journal of the American Medical Association 282 (1999): n. pag. Jama Network. Web. 20 Mar. 2013.

Article 3:
As contact sports continue to become more popular worldwide, many athletes are exposed to both acute and chronic traumatic brain injury. Chronic represents the cumulative, and long term effects of concussions. Rabadi Meheroz and Barry Jordan talk about sports needing to increase rules, medical surveillance, and protective equipment.
http://journals.lww.com/cjsportsmed/Abstract/2001/07000/The_Cumulative_Effect_of_Repetitive_Concussion_in.11.aspx
Meheroz, Rabadi H., MD, and Jordan D. Barry, MD. "The Cumulative Effect of Repetitive Concussions in Sports." Clinical Journal of Sport Medicine 11.3 (2001): n. pag. Web. 20 Mar. 2013.

Article 4:
Contact sports, one of the most popular activities in all the world, must create a balance between maintaining a competitive edge and ensuring player safety. A problem with this is that players, coaches, sports media, and spectators are biased. When treating concussions, it is important to prevent acumulative brain injury, which means dont let them play unless they have been absolutely cleared.
http://www.neurology.org/content/48/3/575.short
Kelly, James P., MD, and Jay H. Rosenberg, MD. "Diagnosis and Management of Concussions in Sports." The Official Journal of the American Academy of Neurology 48 (1997): n. pag. Web. 20 Mar. 2013.

Article 5:
This article, like many others discusses the many symptoms and severity of concussions. Kimberly Harmon talks about statistics, she says that as many as 250,000 concussions occur each year, and around 20 percent of players sustain concussions. She states that once the first concussion has occured, the player becomes four to six times more likely to sustain a second.
http://www.aafp.org/afp/1999/0901/p887.html?pagewanted=all
Harmon, Kimberly G., MD. "Assessment and Management of Concussion in Sports." Journal of the American Academy of Family Physicians (1999): n. pag. AAFP. Web. 22 Mar. 2013.