I never heard of Kettlercise before so looked at some videos. Kettlercise doesn't look very demanding. Less heavy breathing than my 12 minute/mile pace jogs. There are very impressive claims about how much calories Kettlercise can burn, like 657 calories in 45 minutes (24yo F, 5'6", of unknown weight)
I tried using the calories burnt as function of HR formula* on this page:

Is it possible to measure calorie burn from heart rate alone?

That formula comes up with numbers I think are credible for my calorie burn when I am jogging (*I have a pretty good estimate of my real VO2MAX).

But the HR that would be required for a 24yo female to get to 657 cal/53 minutes, requires all kinds of extreme values in the formula above. VO2max = 50, 70 kg, avg HR = 195. Do those numbers make sense(??) Is the formula that inaccurate?

Or would I be right to think that Kettlercise energy expenditure is probably being over-hyped?

  • 1
    Kettlebell exercises are probably too complex of movements to fit into that formula. Plus there's some degree of anaerobic work going on with these types of movements.
    – Alex L
    Commented Feb 8, 2016 at 0:09
  • Do some snatches and swings with a 53lb kb, and then check that effort against a 12 minute mile.
    – Eric
    Commented Feb 8, 2016 at 7:25
  • 1
    How did you obtain the value for your "good estimate of your real VO2max"?
    – JohnP
    Commented Feb 8, 2016 at 19:58
  • Thanks for replies. .....It looks very boring, costs money, I have history of RSI in my forearms, so Kettlebells probably not good for me. I just wondered if those calorie expenditure values could be true for something that doesn't look that tiring..... I had my VO2MAX lab-tested 10 yrs ago. Assuming an avg % decline for my age, my VO2Max should still be around 44-I forget the units, but anyway, close enough. My husband had his VO2MAX done 10 yrs ago & again 3.5yrs ago (both lab -treadmill etc) and his hadn't changed at all in the intervening time. Commented Feb 9, 2016 at 9:49

1 Answer 1


Exercises with kettlebells can be as hard as barbell work, sprinting or high end sport activities if done correctly.

'Kettlecise' sounds like a group class which is typically aimed at anybody. So it might not be suitable for someone already quite fit.

Try it out and then increase the weights as necessary. A 8kg kettlebell in a class feels a lot different to a 24kg one.

Much like a jog and a sprint are essentially the same but completely different.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.