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?
In: 1708
Trained person can do more work by spending more energy. But it’s about the same amount of work per energy spent. It’s rather physics, than biology.
Human muscle tissue consumes about the same amount of energy per amount of work. So, feeling of exhaustion is related to amount of work per amount of muscle.
If two people have different amount of muscles, they will burn the same amount of calories for the same work. But weaker person would be more tired.
Interestingly, the amount of calories spent can be estimated by the amount of breathing. If you breathe heavily, you’re spending a lot of calories.
Sometimes anaerobic energy consumption kicks in in muscles, which doesn’t require oxygen instantly to be consumed, but it will require the molecules to be replenished later.
But anaerobic breathing also sends chemical signals to increase the amount of mitochondria in cells. Also it improves the capillary network. That’s why HIIT is beneficial, it causes muscle cells to utilize anaerobic breathing causing the improvements I mentioned.
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