A brand new device which promises to tone the stomach and give the bottom a workout at the same time could be on the market soon.

Two sisters from Hampshire have invented the 'Booty Buster', a device which works the core muscles around the stomach while targeting cellulite in the bottom and thighs.

It's shaped like a wok and has an unstable base which forces the user to work their stomach muscles to maintain balance. It contains fixed ball-like nodules which massage the bottom area while the person is sitting on it.

Jenny Thorpe, 39, and Debbie Riseborough, 36, had their design prototypes tested by Sports Scientists at the University of Portsmouth and early results are promising.

Dr Joanna Scurr, from the University’s Department of Sport and Exercise Science said: "The premise behind a core workout device is that its very instability means that the muscles work harder to maintain balance.

"The Booty Buster showed significantly more muscle activity than other devices on the market for exercising core stability."

In order to monitor muscle activity Dr Scurr used a process called electromyography (EMG) which records electrical impulses that are produced every time a muscle is used. She attached small electrodes to the skin which picked up the electrical activity of the muscle underneath which were then monitored by a computer.

Thorpe, who is a fitness instructor said: "The benefits of core stability training are well known but almost every woman I know is bothered by cellulite and so we came up with the idea of incorporating something which would work on that too.

"The Booty Buster works the upper and lower abdominal muscles and the obliques and stimulates blood flow to the bottom and thighs keeping the connective tissue elasticated which helps stop fat deposits."

The two girls were able to develop their prototype after approaching the University of Portsmouth for advice and are now looking for more backing to take the product to market.

Interested parties should contact [email protected]

Picture: Jenny Thorpe with the prototype Booty Buster