Arnold Schwazenegger drop-kicked from behind, says he hardly felt a thing

Arnold Schwazenegger's tough guy reputation has been left untarnished after a man attacked him at an event in South Africa.

While talking and filming videos with fans at the Arnold Classic Africa multi-sports event, a man ran up to the former bodybuilder, movie star and Californian governor and drop-kicked him in the back.

The martial arts move saw the man jump in the air and kick the 71-year-old Schwazenegger with two feet and all of his bodyweight behind him. Arnie's reaction?

"I thought I was just jostled by the crowd," the Terminator star later wrote on Twitter.

"Thanks for your concerns, but there is nothing to worry about... I only realised I was kicked when I saw the video."

The offender was quickly subdued by security guards after bouncing off Schwazenegger's back, and no further violence occurred.

Wayne Price, the organiser of the event, said in a statement that Schwazenegger would continue on with his schedule, which included attending the induction of former New Zealand Commonwealth Games gold medallist Precious McKenzie into the South African Hall of Fame.

"Mr Schwazenegger is fine and still in good spirits. He still carried on with the activities as planned and is fully taking this in his stride."

Meanwhile the drop-kicker, who is known to police after being involved in similar incidents in the past, will not be charged with any crime - at Arnie's request.

"He views this as an unfortunate incident by a mischievous fan," Price said.