Originally Posted by
Sullalto
Originally Posted by hubcyclist View Post
I use a power meter, so I get my work in kJ, which roughly translates into calories. So for that ride I expended 270 calories, not really a lot when you think about it, so you'd have to go on around 10 rides like that to burn a pound.
Human body isn't anywhere close to 100% efficient. Multiply the work you did by a factor of 3.5-4.5 to get calories burned.
Just to explain what he meant, converting kj to kilocalorie you divide the powermeter number by four (roughly) and then you multiply that by four (roughly) to account for metabolic efficiency. So the final number, by accident of the conversion factor comes out nearly the same.