How many calories do ViPR and Kettlercise burn?

Hi all,

I've been doing Kettle classes (which are the same as the official Kettlercise) for about 2 months and also started ViPR.

I saw on the Kettlercise website that it burns about 700 calories an hour but it must depend on height, sex and weight? I understand that's also for someone that has put in max effort. I fear I'm over estimating calories burned, so any info or links would be appreciated!

Also, I cannot find any ViPR calorie burn info, not even on the official website. I've found messages on here and other sites but other women claim to burn between 330 to 450 for the 45 mins...again this must depend on size etc! Anyone have any 'official' idea?.

I'm tempted to log both as between HIIT and Met Effect but they are very different exercises!

Thanks all!