IRVINE, CA -- Actors playing rugby players in the new movie “Invictus” used Power Plate vibration technology machines to alleviate sore muscles on the set, the company said.

In the movie, Nelson Mandela, played by Morgan Freeman, attempts to use rugby and the 1995 Rugby World Cup to unite South Africa after apartheid.

“While shooting the movie 'Invictus,' we weren’t acting; we played full-tilt rugby every day, all day,” Grant Roberts, celebrity trainer and actor in the movie, said in a statement. “The Power Plate machine was an important tool that kept me functioning. I used it daily, pre- and post-rugby, to pre-activate my muscles before filming and at the end of the day to stretch and promote active recovery.”

Roberts said Freeman and director Clint Eastwood also tried out the Power Plate machine during the movie’s filming.