Denver Broncos offensive co-ordinator Adam Gase has revealed that he is frustrated with the team's lack of running game.

The Broncos have the 27th-best rushing attack in the NFL and they're attempting more than 25 carries a game while averaging fewer than 100 yards.

"I was really frustrated with the fact that we did not run the ball better," Gase told the Denver Post.

"We do need to find a way to do it better. It's something we have to keep working on. We have to find a way to get these guys covered up [blocked], get our backs back to the line of the scrimmage and see what they can do."

CJ Anderson and Ronnie Hillman have carried the load as running backs in recent weeks, although Montee Ball is expected to return to action soon.