The Canadian Football League will effectively limit contact to games following the end of preseason training camp.

Commissioner Randy Ambrosie said the change was not aimed specifically at addressing concussions. It did come two months after a Boston-based study found chronic traumatic encephalopathy (CTE) in nearly all of the 202 brains sampled from former football players.

Under the CFL policy, the only padded equipment that players will be allowed to wear during practice will be helmets.