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1 .This is Scientific American 60-Second Mind, I'm Ingrid Wickelgren. Got a minute?
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2 .Brain injury is a growing concern in football.
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3 .But changes during practice could make the game safer for kids by cutting total blows to the head in half.
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4 .So finds the largest study ever to measure head impacts in youth football.
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5 .The work is in the Annals of Biomedical Engineering.
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6 .Researchers put accelerometers in the helmets of 50 9- to 12-year-olds on three teams to detect forces on the head.
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7 .For kids on two teams, practice was far riskier than games:
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8 .they got more than twice as many whacks to the skull at practice than in games.
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9 .The more hits, the greater the chance of brain injury.
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10 .But the third team got knocked in the noggin only half as often as the others, and the difference was entirely from workouts.
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11 .That team not only practiced less but their sessions were safer:
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12 .players followed new Pop Warner rules that restrict the number of contact drills and outlaw the roughest ones.
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13 .During actual games, however, contact was the same for all players,
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14 .which shows that protecting kids in practice doesn't change the product on the field.
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15 .That can stay as brutal as we like.
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16 .Thanks for the minute, for Scientific American 60-Second Mind. I'm Ingrid Wickelgren.
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