Originally Posted by
DrIsotope
Work is work-- a kJ is a kJ regardless of the HR or cadence. We all have different natural cadences and different resting/active heart rates. But work done is work done.
Work is work and a kJ is a kJ, but that doesn't mean that 1 kJ equals exactly 1kcal for everybody. "kj work equals calories burned" is just an estimate; it's a pretty good estimate, and better than anything other measurement short of a gas exchange mask in a lab, but it's not an absolute truth.