A virating exercise machine favoured by Kylie and Madonna is better than aerobics or swimming at fighting the flab, a study has found.
Women who dieted and used a Power Plate three times a week lost almost twice as much weight as those who did more conventional exercise.
The machines were particularly effective at trimming dangerous fat from around the stomach, researchers said.
Power Plates look like weighing scales with a vibrating platform which users stand, sit or lean on to do gentle exercises.
It is thought that the vibrations cause the muscles to contract and relax much more frequently than in normal exercise.
Researchers tracked 61 overweight and obese men and women given a variety of diet and exercise programmes to follow for six months.
Those who used a Power Plate on top of a low-calorie diet lost an average of 11 per cent of their weight, the European Congress on Obesity heard.
This compared with 6 per cent for those who dieted but did no exercise and 7 per cent for those who who dieted and did conventional work-outs such as aerobics, running and cycling.
But the researchers warned that simply standing on the machine is not enough - users must actively exercise as well.