Thread: How calories are used in the body?

i do know that the microvilli in the proximal convoluted tubule of the nephron are alotted about 6% of the body's calories.

thats one piece of the puzzle.

can you tell i'm knee deep in anatomy and physiology?

I guess you could just not eat anything and use some sort of calorimtery and find out yourself!

Although your probably end up burning less calories for metabolic processes if you stop eating all together because of adaptation. Hmmm, good question.

1,037 every day.

Originally Posted by I Are Baboon

1,037 every day.

Too many factors to determine an exact number

Finding out an individual's amount of calories burned from metabolic processes would be super invasive as well, I think there have been some studies done though.

THere are a few calculations by Katch McArdle and Harris-Benedict formula.

I have posted these calculations on this site. They are fairly simple, and give a good estimate.

I will see if I can find the web site that also includes a few other factors, such as the thermogenic properties of food.

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Link to the calculations

whey protien???


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Link to a website for MET values

http://nutrition.about.com/od/guesta...onwtloss_2.htm


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Thermic Effect of Food

Calculating Thermic Effect of Food (TEF):

0.10 Moderate Protein Diet
0.15 High Protein Diet



(TEF = RMR(resting/basal metabolic rate) x 0.10/0.15 = TEF)


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If I'm not mistaken, breathing takes only about 5% of the body's energy needs normally, and brain activity takes a whopping 20%.

I actually recall reading (Source is escaping me) that somewhere around 50% of the body's energy is spent driving the potassium-sodium pumps in our cells! That is, the pump that pushes sodium out of the cell and potassium into the cell against their concentration gradients.

* IQ can effect energy consumption. After learning a task, lower IQ
people have to exert more energy to complete a task than high IQ
people who have learned the same task.

Also reading for someone like me who has dyslexia may take more energy than the normal reader...

An alcoholics liver may take more energy to do it's work than a sober person's...etc and so on....so the numbers will be all over the place for different people...