"When I was growing up, the same type of wrestling was on television, and we knew it was fake," he tells Web MD."But the level of violence today has escalated 100-fold in the last 10 years.
"We know that the more kids are exposed to [wrestling], the more it affects them," he tells Web MD.
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In a follow-up survey of the same kids six months later, Du Rant found that kids were still watching the same amounts of wrestling.
But boys were involved in less risky behaviors, while girls had increased their dangerous behaviors.