LEXINGTON, Ky., Sep 4, 2009 (UPI via COMTEX) -- Using YouTube videos,
researchers at the University of Kentucky in Lexington identified an involuntary
response to head trauma.
Observing hundreds of hours of tape showing people getting smacked, punched and
knocked in the head during sporting and recreational events led researchers to
identify the "fencing response."
Study leader Jonathan Lifshitz said the response -- a forearm raised stance
similar to the en garde position in sword fighting -- can indicate damage to
blood vessels and neurons in the brain stem that control balance. It also can
appear as a defensive boxing pose.
"The fencing response frequently takes place before the player even hits the
ground," Lifshitz said in statement. "The observation of the fencing response
can help coaches and trainers make immediate and future return-to-play
decisions."
Although moderate-to-severe head trauma can cause permanent brain damage or
death if ignored by medical staff, these injuries sometimes are not readily
apparent. The fencing response provides an immediate visual cue that could help
injured players get the attention they need, Lifshitz said.
However, the response is not universal.
"The absence of a fencing response should not be taken as a sign that no injury
has occurred," Lifshitz said.
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Copyright 2009 by United Press International