Originally Posted by
sreten
If they are the same size and weight, going at the same speed, they will burn the same calories.
I don't believe this is true. A fit rider has a body that is more efficient than an out of shape at producing the same
"power" (remember that the human body is quite inefficient at making power - I've seen
numbers around 25%).
That being said, I don't know how big an effect being in shape makes quantitatively.
Originally Posted by
sreten
The unfit rider will have a higher HR, and will have to make more effort to keep up.
I believe this is true. Woudln't
"more effort" translate into more calories? This statement seems to disagree with your sentence just before.
Originally Posted by
sreten
Over a given distance, the faster you do the distance, the more calories it takes. Power output determines speed.
This is true because of the aerodynamic drag, which goes like speed squared. If all of the resistive forces were linear with speed, it would be the case that the total power output to go a given distance would be equal regardless of speed.