Adrian Peterson was back at Winter Park on Monday as the Vikings get ready for their mandatory minicamp starting Friday.

The Vikings did not have a full OTA workout, but NFL Network shot a video of Peterson and the rest of the running backs going through some drills.

The running backs carried a 14-pound football filled with sand during one drill that the network showed. Reporter Solomon Wilcots described it as the football version of a medicine ball, designed to help the running backs get a better feel for the football and presumably help reduce fumbles.

Wilcots also conducted an interview with Peterson that can be found right here.

We have media access starting Friday and Peterson obviously will be the center of attention as he addresses reporters en masse for the first time since the NFC Championship game.

Peterson has not participated in the OTAs this offseason. Instead, he's worked out in Houston.

Vikings coach Brad Childress has said the team did an offseason study on how to help Peterson solve his fumbling problems so we should get a better idea of what that entails this weekend.

NFL Network will air more of the Peterson interview during Total Access at 6 p.m. on Monday.