Dr. David Dodick, a concussion expert at the Mayo Clinic in Phoenix who was familiar with highlights of the new document, said they contain "no great revelations" beyond what experts know already. He noted that the guidelines state that the first 10 days after a concussion are the period of highest risk for being diagnosed with a second concussion, and that younger athletes take longer to recover from the injury.

Additional Coverage: Huffington Post, ABC News, Atlanta Journal-Constitution,  USA Today, Yahoo! News UK & Ireland (AFP), Huffington Post Canada

NBC Sports (AP) by Malcolm Ritter

Tags: athletes, concussion, concussion risk, Dr. David Dodick, Mayo Clinic Arizona, NBC Sports, recovery, Research, Sports Medicine