Even with anaerobic metabolism, the process produces lactate and pyruvate as a byproduct that the body needs to clear that out, which generally involves oxygen consumption. So the energy expenditure might spike in that moment without a corresponding spike in oxygen in that moment, but the amount over time should increase to where the overall amount should still correlate with total calori expenditure.
Even with anaerobic metabolism, the process produces lactate and pyruvate as a byproduct that the body needs to clear that out, which generally involves oxygen consumption. So the energy expenditure might spike in that moment without a corresponding spike in oxygen in that moment, but the amount over time should increase to where the overall amount should still correlate with total calori expenditure.
That’s kinda what I assumed, but again: don’t read good. What’s the time scale to make up the difference?