Not really. Does not matter if your on a kids bike, time trial bike, or a 60lb mountain bike... Speed and paint color have no effect on calories burned or progress made towards any kind of fitness.Looneybomber wrote: That means you save energy/calories.
It is only about how hard you are working.
Your basing your assumption on the fast that your basing your effort on speed... If you really wanna ride, or if your seriously going to talk about burning calories you should be exerting yourself at a given level regardless of speed.
You can change the bike all you want, unless your changing what you are doing your really just going to be going faster or slower.
You can't honestly tell me that if I run for 20 minutes just shy of my lactate threshold that I will burn more calories on a mountain bike then a hybrid.
And honestly, for anyone like me... your going to burn more on a faster bike. Faster bikes push you to push harder. No one will kill themselves to make a wallmart mountain bike go as fast as possible, because its just not worth it. When I first got my road bike I notice it tired me out WAY quicker then my old bike simply because it was fast enough to encourage me to pedal faster/harder...
