Vibroplate/ Powerplates

Hi All!
Hope your all being sucessfull on your journeys with MFP.
I have one question, The Vibroplates... or some people call them Powerplates..
I Found them fantastic in losing my weight at the start, but im wondering how much exactly is the Calories burned? 10 Mins shows 283cals.. seems alot?:noway:

Any one have these and have any Tips/advice on losing weight with them?

Thanks all!
Liv :wink: