Here are five insights:
1. For the training intervention, 20 football players were divided into intervention and control groups.
2. The intervention group participated in a five-minute tackling drill without their helmets and shoulder pads twice per week in the preseason and once per week through the season.
3. During the same time, the control group performed noncontact football skills.
4. Head impacts for each athlete-exposure decreased for the intervention group by the end of the season.
5. The intervention group had 30 percent fewer head impacts for each athlete-exposure than the control group by the end of the season.
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