protein calories

[derailed]

Protein are the building blocks of all muscles. But in order to synthesis actin and myocin fibers, calories from carbs are needed. The question is how much?

Well we all know that we should get about 1 g of protein per kilo of lean body weight per day. So lets take an 80 kilo man. He should have at least 80gr of protein a day to maintain a steady anabolic state. In order to calculate the calories needed for that protein intake, we need to figure out how much nitrogen your body uses a day.

To do that, take the grams of protein and divide by 6.25.

This equals 12.8 g of Nitrogen your body processes. To maintain 1 g of N, you will need 150-200 calories.

12.8 x 200 =2560

There you go guys. To utilize 80g of protein a day, you will need at least 2560 calories.

Eating any more protein without increasing your calories will result in your body converting the extra protein into carbs/ fat since your body does not store protein.

Lets change it up a bit. Say you want to do 1.25 g/protein/kilo/day.
1.25x80=100 g of protein/ day.

100/6.25= 16 g of N

16x200= 3200 calories needed to process 100 g of protein.

 

[Lupercal CATS]

Protein are the building blocks of all muscles. But in order to synthesis actin and myocin fibers, calories from carbs are needed. The question is how much?

Well we all know that we should get about 1 g of protein per kilo of lean body weight per day. So lets take an 80 kilo man. He should have at least 80gr of protein a day to maintain a steady anabolic state. In order to calculate the calories needed for that protein intake, we need to figure out how much nitrogen your body uses a day.

To do that, take the grams of protein and divide by 6.25.

This equals 12.8 g of Nitrogen your body processes. To maintain 1 g of N, you will need 150-200 calories.

12.8 x 200 =2560

There you go guys. To utilize 80g of protein a day, you will need at least 2560 calories.

Eating any more protein without increasing your calories will result in your body converting the extra protein into carbs/ fat since your body does not store protein.

Lets change it up a bit. Say you want to do 1.25 g/protein/kilo/day.
1.25x80=100 g of protein/ day.

100/6.25= 16 g of N

16x200= 3200 calories needed to process 100 g of protein.

Is that 2560 calories from carbs?

 

[Anybody]

I've always heard it's 1-2 grams of protein per POUND, not kilogram, per day.

The reason to take this much is that even though your body can't store protein long-term, it stays in your blood for awhile after being digested. IT's important to have a steady stream in your blood so that your body will burn that protein instead of breaking down muscle for protein energy needs. It's difficult to force your body to burn ONLY carbs for energy, especially during activity.

Synthesizing 80g of protein in one day would be astronomical. That's 3oz of raw muscle. Since skeletal muscle gains are usually accompanied by about 3x their weight in cellular fluids, that would mean gaining 12oz of lean body weight in one day.

That's what i think anyway, sorry if i'm misunderstanding you.

 

[derailed]

Sorry if i wasnt too clear. Its late, and I have a big exam in a few days. The protein you eat doesnt only go to make muscle. Our entire body is always restoring enzyme, structural proteins, globulins etc. What ever is left over from the protein you eat, your body will use it to make muscle if the proper stimulus is there.

In order to build muscle, we need to be in an anabolic state. Anabolic means we are taking in more nitrogen then we are excreting, positive nitrogen balance. Negative nitrogen balance is the opposite, catabolic, meaning that we are excreting more nitrogen then we are taking in. That extra nitrogen comes from the proteins that are being broken down for energy.

For every 6.25 g of protein, our body needs an extra 200 calories to make something from it, being enzymes, structural proteins, globulins, etc. If we are laking those 200 calories for every 6.25g of protein, what happens is that the liver will break them down into urea and what ever organic acid makes up that amino acid and off to the krebs cycle is goes.

Another thing is that protein actually stimulates the release of glucagon, a stress hormone. This hormone tells the body that its in a hypoglycemic state and that it needs to prepare to break stuff down in order supply glucose.

Basically what im saying is that without the proper calories, your blood may be full of amino acids but cant use them to build anything. Your aching muscles wont even try to take those amino acids, brain and blood have priorty. That forumla just shows how many calroies you need to take full advantage of the protein we eat. If you cant supply the calories, then lower your protein intake.

I know this sounds jumpy. But its hard to explain what im talking without explaining all of physiology and biochemistry.

 

[djsf]

For every 6.25 g of protein, our body needs an extra 200 calories to make something from it, being enzymes, structural proteins, globulins, etc. If we are laking those 200 calories for every 6.25g of protein, what happens is that the liver will break them down into urea and what ever organic acid makes up that amino acid and off to the krebs cycle is goes. I know this sounds jumpy. But its hard to explain what im talking without explaining all of physiology and biochemistry.

Fascinating. So for a 200 pound man (me) who eats 200g protein ed, I need to eat 6400 calories just to process it (200/6.25*200.

For purposes of enabling protein to be utilized, do those calories need to be any particular ratio of carbs to fat?

 

[derailed]

Fascinating. So for a 200 pound man (me) who eats 200g protein ed, I need to eat 6400 calories just to process it (200/6.25*200.

For purposes of enabling protein to be utilized, do those calories need to be any particular ratio of carbs to fat?

I need to do more research, but I think a 3/1 or 4/1 ratio would be ok. I dont suggest you eating 6400 kcal because your body does not use all the protein you ingest for growth or maintaince. Using that kind of diet would not be the rate limiting factor in your anabolic phase, but you would put on alot of fat with it.

I still think the 1g protein/ 1lb is overkill. But if you are not going to eat the calories to process the protein, dont even bother eating the protein. All youll be doing then is eating an Atkins style diet lol. A better way to look at it is to ask yourself, how much protein can my diet support? 3000kcal will support a 100g protein diet. Any excess protein will be converted to fat.

What does 6400kcal mean?
200g protein
1050g carbs
155g fat

1050g of carbs =40 potatos thats alot of food, talk about too much potassium. I wonder if thats enough to stop your heart.