Helmet `sensor' to help see extent of injury in athletes

1. Helmet `sensor' to help see
extent of injury in athletes
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2. Contd..
When the Steelers and Patriots clash on Thursday in the foot ball's season
opener, you'll see 250-pound men slam into each other, head o head, at high
speed. And get concussions? There's no easy way to tell. That goes for young
athletes, too, whose developing brains are particularly vulnerable to damage
if they keep playing after getting a concussion. Sports-related brain trauma
sends a quarter-million American kids to the emergency room annually , but
symptoms may unfold over hours, days, or even weeks.
Researchers led by Shu Yang have created a chemical strip that changes
colour on impact to measure the force of a collision. The material could be
integrated in o helmets for athletes or soldiers.
There's already a small industry trying to develop helmet sensors and other
devices to measure or prevent concussions in sports, though it hasn't yielded
breakthroughs yet.
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3. Contd..
The problem is determining what really happens to the brain on impact. “No
one's been able to predict in clinical cases how much force it actually takes
to cause a concussion,“ said Richard Figler, former te am physician for the
Browns. Players caught off guard by a soccer ball kicked rom behind, for
example, can sustain con cussions from much smaller forces than so meone
braced for a tackle, whose neck muscles absorb some of the blow.
The University of Pennsylvania techno ogy needs research to show whether
it can predict injuries, rather than just measure he force of a hit. The material
relies on tiny crystals whose color is linked to their under ying shapes, not to
pigmentation. When a hard blow changes the shape of the crystals he color
changes as well. One challenge wil be to measure the speed of an impact,
becau se the same force can be much more dama ging to neurons at higher
speeds. Brought to you by
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