When we eat 1 Calories (actually, energetically, it's a Kilocalories but the term Kilo should not do well in nutrition books ...), how much do we equate with? How much do we use (a man at rest emits 70W in thermal form permanently)? How much do we stock? How much can an average body store energy per day at a maximum (fat production)? What is the muscular output of a man? What is the maximum thermal power emitted by a man? Etc., etc...
In other words: this subject will have to try to answer the following question, how is the energy of the diet used and what is the energy balance of a human being (and by extension of animal propulsion)?
Obviously this depends on the person and probably the type of calories (1 calorie in slow sugars, fast or fat is not used in the same way), but we will try to speak on average.
In fact I wanted to answer the following on this subject:
https://www.econologie.com/forums/calcul-bes ... 10106.html
but I think the question deserves to be highlighted:
clasou wrote:Christophe wrote:I recently bought a bike computer that calculates calories burned and the fat equivalence ...
I have the following equivalence: 1 km = 1 gram of fat = 20 calories (we speak obviously of Calories so Kilocalories). The muscle yield is of the order of 20%.
Except error 1 gr of fast sugar is 4 calories, when gram fat is 9 calories.
the fatter element the oil is 900 calories to 100gr.
1 gram of fat = 9 Calories (Kilocalories) = 9 * 4.18 kJ = 38 kJ, that is for 1 kg 38 000 kJ. This is actually the good value in raw energy.
It is always delicate with the nouriture because it is necessary to distinguish raw and net energy (usable or storable). What is indicated on the packaging is the raw energy contained in the food.
The numbers I gave are the equivalences given on the meter during the energy loss. That is to say that to provide a mechanical calorie muscle (muscle performance 20%) it was necessary to spend 5 storage calories (fat) ... problem it does not stick with at all with the equivalence of the counter ... to opposite...
However, if we have the equivalent 1g of fat which contains 9 Calories = 20 Calories expended, it is because either there is a "bug" in the calculation of the counter, or it speaks in "raw energy that we have eaten" . We can eat 20 Calories to store only 9 corresponding to the gram of melted fat, but that seems enormous to me as a storable proportion ...
Indeed; when we eat 100 calories, we do not assimilate 100 (part remains in the "duct"), we spend it directly and we therefore only store a small part. In my opinion the storage is less than 1% ... but as said above it depends on the body and the type of calorie.
Should get hold of studies, maybe there are some numbers in this one: https://www.econologie.com/stockage-et-p ... -3133.html
Read also: https://www.econologie.com/forums/alimentati ... t8851.html
In short: let's try to make light on these points together ...