Anti-gravity fitness technology, which was developed by NASA and reduces impact during exercise, featured on this week's episode of Stephen Fry’s popular Channel 4 series Gadget Man.

Riding on the AlterG Anti-Gravity treadmill Fry commented how the machine, which can un-weight up to 80 per cent of a person’s body weight, lifted him on to his toes.

The technology’s low impact workout, suitable for rehabilitation, weight loss and athletic training, means users can burn calories while extending the life expectancy of bones and joints.

Premiership football clubs like Manchester United, Arsenal and Chelsea have purchased the treadmills, which were tested at Nike’s Oregon Research Project by America’s top distance runners, to help their players with recovery.

AlterG was founded in 2005 and launched its first commercial anti-gravity treadmill in 2007.