This Friday, the Irish documentary Revolutions opens in cinemas. Engaging and accessible, Revolutions offers a look into the rough and tumble world of the unconventional sport of roller derby, as well as a look into the lives of the women who play it. Beginning in 2011, the film follows the players and coaches of Dublin Roller Derby and the Cork City Firebirds, both competing separately and coming together to make up most of the Irish national team that travels to their first roller derby World Cup in Canada, competing against the likes of England and Argentina. Director Laura McGann has been promoting the film – her debut feature after numerous credits on TV shows and documentary shorts – ahead of a special Q&A to launch the film at the IFI on Friday. Film In Dublin spoke to Laura about the allure of roller derby, tension in the teams and the importance of keeping your distance when drinking coffee around athletes racing at high speed on skates.