As expected, two weeks after the concussion, the concussed patients reported noticeable effects of their injury, from dizziness to headaches to problems with memory than the control groups.
"There is real evidence that people, when they are forced to play again after being concussed, can all too easily end up suffering," Bryant said.
An estimated 3.8 million athletes are concussed each year, but the Brain Trauma Foundation believes concussions are underreported and underdiagnosed.
Sweaty and concussed, I waited for the noise to die down and said: "Can I start again?" Omid Djalili is at the Pleasance Grand, Edinburgh, 23-27 August, before embarking on a UK tour I'm six and this is The Big One.
Two years ago, he wondered if he would play again, after a helmet-to-helmet hit against Washington State left Barner crumpled on the field, concussed.
To figure out which genes might give us clues as to who is easily concussed, scientists first needed to understand what's happening during a concussion.
And again, in another scene when John whacked him on the head with a frying pan, he ended up slightly concussed but showed no pain.
