When exercising, does the amount of effort determine calories burned or the actual work being done?

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Will an athlete who runs for an hour at moderate pace and is not tired at the end burn more calories than an out of shape person who runs for an hour a way shorter distance but is exhausted at the end?
Assuming both have the same weight and such

What I want to know basically is if your body gets stronger will it need less energy to perform the same amount of work?

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Anonymous 0 Comments

It’s the effort for sure. The body isn’t a simplified physics textbook problem. It has all kinds of inefficiencies and optimizations. Your mechanical motion is indescribably complicated if we want to completely describe it with physics formulae. And that doesn’t even include biological changes and adaptations over time. So no, your calories burned has a loose connection to the “work” being done. Whatever you perceive your effort multiplied by time yields a far more accurate accounting of calories burned.

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