Adrian Peterson was added to the Minnesota Vikings' injury report on Wednesday with a groin injury and didn't participate in the team's practice.

The veteran running back returned last Sunday after an 11-game absence due to a torn meniscus, but refused to commit to playing Saturday against the Green Bay Packers.

"I'm taking it day by day," Peterson said, according to Matt Vensel of The Star-Tribune.

Peterson's knee injury was still listed on the report.

The 31-year-old's return didn't have the impact some were expecting, as he rushed six times for just 22 yards and fumbled the ball in the red zone in a blowout loss to the Indianapolis Colts.

With the Vikings' playoff hopes all but extinguished, it's possible the team shuts Peterson down for the rest of the season in order to avoid any more injuries.