Three academics have raised concerns about the research because they claim it excluded almost 40 per cent of players who were concussed during the time of the study and did not examine the long-term effects of their injuries. | agerealfooty afl
can also reveal a second set of cognitive tests for Makdissi’s thesis, which related to 16 of the 138 concussions, found deficits in reaction times, attention and working memory in concussed players who were returned to play, but these results were not published in the study.in recent weeks asking why he did not report the second set of cognitive data.
An AFL spokesman said the purpose and scope of the study - to determine whether a concussed player who came back the following week was at increased risk of impaired performance, injury or concussion in that “post-concussion match” - were clearly set out in the paper, and the game had adopted a more cautious approach in the years since, including the minimum 12-day stand-down rule.
Makdissi’s study reported that one player retired because of “persistent headaches”, and the player had been excluded because of “insufficient baseline”, meaning they had not played before their concussion. It raises the possibility that another unidentified player retired from concussion during the period of the study.
Kemp, who played 243 games and won the Norm Smith Medal in the Eagles’ 1994 grand final win, announced his retirement later in 2001. Kemp, who experienced numbness in his fingers, was told he risked permanent memory loss and blindness if he kept playing. “I was working out that the more concussions you get the easier it is to get a concussion and the worse the effects are. So, it’s like a big snowball.”
Woodcock said the study was well powered to detect changes in player performance after concussion, but not to detect injury rates after concussion.
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