Dozens of people in Japan have taken part in a race on office chairs - a competition which was inspired by Formula One and Le Mans.

The contest, which founded 10 years ago, involves teams of three battling it out across two hours to see who can complete the most laps of the 200m course.

Over the weekend, 55 teams entered the Hanyu race, with the winning team Kitsugawa Unyu claiming the top prize of 90kg of rice.

There are 10 different Isu-1 Grand Prix events planned across the country this year.