Usain Bolt found it hard to match his usual pace while sprinting in zero-gravity conditions. Subscribe to Guardian Sport ► http://bit.ly/GDNSport He did however win a weightless race on board an aeroplane, normally used for scientific research Support the Guardian ► https://support.theguardian.com/contribute Today in Focus podcast ► https://www.theguardian.com/news/series/todayinfocus The Guardian ► www.theguardian.com/sport The Guardian YouTube network: The Guardian ► www.youtube.com/theguardian Guardian News ► http://is.gd/guardianwires Guardian Football ► http://is.gd/guardianfootball Guardian Culture ► http://is.gd/guardianculture #UsainBolt #UsainBoltZeroGravity #ZeroGravity #ZeroG #UsainBoltZeroG