Penn St. program tries to prevent concussions by examining surfaces

What does the hardness of the football field have to do with concussions?

According to a recent post in USA Football's "From the Field" blog, field density plays a sizable factor in head injuries. In fact, Penn State's Center for Sports Surface Research reported that 10 percent of concussions come from how hard the ground -- or the artificial turf -- is on a football field.

The Center has a separate device for measuring the hardness of artificial surfaces.

The center, which suggests testing fields once a year, has a process for making the fields softer for landings. For natural grass, aerate it just like a golf courses.

For artificial turf, add more recycled rubber.

-- Bill Bradley, contributing editor

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