Originally Posted by
MetalPedaler
Maybe. But what I meant is: When I first started riding at 220 lbs and out-of-shape, I burned a lot more calories on a shorter, slower ride, than I do now at 180 lbs. and being much more fit. Granted, I go faster and further now in the same time....but if i were doing the same ride at the same speed that I started out doing, I'd probably burn half the calories that I burned then.
Largely nonsense, I'm afraid. You'll burn fewer calories because you are shifting less weight at the same velocity, and therefore using less power. The difference will be minor on flat ground and will have nothing whatever to do with how fit you are.
Being fit allows you to burn more calories in a given time by maintaining a higher power output. It makes absolutley no difference to how many calories it takes to shift a given weight at a given velocity.