Marion Barber (calf) limited

LAKE FOREST, Ill. -- For the second consecutive Wednesday, Chicago Bears running back Marion Barber tested out his injured calf and had limited participation in practice. Barber's calf did not respond well last week following his one-day stint at practice, forcing the Bears to shut down the veteran for the remainder of the week.

Barber hurt the calf in the third preseason game in Tennessee on Aug. 27, and has been inactive in the first two weeks of the regular season.

Bears coach Lovie Smith is looking forward to getting Barber back in action.

"It should help a lot," Smith said Wednesday. "I think most of you had a chance to see what Marion was able to do in training camp, in some of the early preseason games. He should give us a boost when he gets back. It was good to get him back out there doing some work today. Hopefully, it won't be long before we can really get him into the mix."

Also back on the practice field were safety Chris Harris (limited participation), wide receiver Roy Williams (limited) and offensive guard Lance Louis (limited). All three players failed to dress Sunday in the Bears' 30-13 defeat at the hands of the New Orleans Saints.

Meanwhile, wide receiver Earl Bennett, right tackle Gabe Carimi and safety Major Wright all sat out practice on Wednesday.

Williams wasn't certain about his potential availability for Sunday's game.

Williams said he felt "good" after suffering straining a groin muscle in the team's season-opening victory over the Falcons, but plans to take a wait-and-see approach into the week of preparation.

"You know what, I'm doing all the treatment, and we'll see what happens," Williams said.

Bennett and Carimi are expected to miss the Bears' matchup against the Green Bay Packers on Sunday at Soldier Field.

Jeff Dickerson covers the Bears for ESPNChicago.com and ESPN 1000. Information from ESPNChicago.com's Michael C. Wright was used in this report.