A new Canadian study, published in the November issue of the journal Neurosurg Focus, says evidence shows that concussions are taking an even greater toll on athletes than researchers had realized.
Researchers, who followed two unnamed male junior hockey teams for 52 games, found the injuries are seven times more common than previously reported for players in their late teens and early 20s and that many of those most closely involved with the sport aren't taking the injuries seriously.
Paul Echlin, a London, Ont.-based sports medicine physician and lead author of the study, will be online at 2 p.m. ET today to take your questions on concussions in sport. You can also leave questions in advance using the comments function on this article.
On an iPhone or Blackberry? Smartphone users can replay a mobile-friendly version of the live chat here.