ST. PAUL (AP) - Minnesota Gov. Mark Dayton is being slowed by a hip-muscle tear that an aide says could limit his public schedule while he recovers.

Deputy Chief of Staff Bob Hume says the 66-year-old governor injured the muscle over the weekend and was checked out at the Mayo Clinic on Monday. He was prescribed a physical therapy regimen but is still experiencing discomfort. Dayton canceled a scheduled appearance Wednesday at a business ribbon cutting.

Last winter, the first-term Democrat was sidelined for weeks by major back surgery.

Hume says Dayton will keep a public schedule "off and on" but keep up with his workload even if he's not at the Capitol.

Hume says he doesn't know what activity caused the injury, which came soon after Dayton returned from an overseas trade trip.