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The body "selects" the substrate for fuel on the amount of time that it has to provide energy to sustain the exercise, and the amount of oxygen available to use in the conversion process. At lower intensities, fat (both stored and circulating ffa {free fatty acids}) is the preferred source, with carbohydrates in minimal proportions. As you get higher in ...


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While cycling you need to overcome inertia, wind resistance and gravity. Inertia is related to moving weight, wind resistance to your speed and gravity come into play when you climb uphill. Various things will influence the amount of work produced on your bike, and calories burnt as a result Course elevation profile Wind conditions The bike you ride (road, ...


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You do work on a bicycle to overcome wind resistance and to lift you and the bike up hills. If you do a slow flat ride, you will burn fewer calories; if you do a fast hilly ride, you will burn more. Converting the two values you give to calories per hour would be 440-810 calories. I'm a fairly serious recreational cyclist; I ride a few thousand miles a ...



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