GAYLORD, Mich. — The organization that governs Michigan high school athletes has voted to trim the amount of full-contact football practice from a maximum of 90 to 30 minutes per week and to drastically reduce the amount of full contact allowed in preseason workouts.

The Michigan High School Athletic Association voted this week on the reductions for full-contact practices, joining New Jersey as the second state to implement rules favored by Practice Like Pros, a nonprofit devoted to reducing youth football injuries .