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(etothepii @ Aug. 17 2007,07:52)</div><div id="QUOTEHEAD">QUOTE</div><div id="QUOTE">I'll try to get my math right this time!!!
Here is 100 grams of chicken breast, taken from nutritiondata.com:
Chicken Breast
Calories: 110
Calories from fat: 11
Total fat: 1g
Saturated fat: 0g
Trans fat: 0g
Cholesterol: 58mg
Sodium: 65mg
Total Carbohydrates: 0g
Fiber: 0g
Sugar: 0g
Protein: 23g
Vitamin A: 0
Vitamin C: 0
Calcium: 1
Iron: 4
OK, there is 100g of matter in that food, but adding up all the nutrients above together we get less than 25g of food, 15g moisture. Nutritiondata.com confirms this by listing it's moisture content as 75%.
Looking at protein, you might say it's only 23% protein, that is, 23/100 = .23.
But, protein has 4 calories per gram (rounded off, actually, it's a little over 4 calories per gram). 23*4= 92, and 92/110 = .84, or 84%. Nutritiondata.com lists it as 90% protein. They must have exact, and not rounded calculations.
So we see that chicken is much more than 25% protein. Do you consider 90% protein to be protein dense?
So the nutrient density of food is not detemined by dividing grams, but calories. Otherwise, you are figuring in moisture, which while critical for life, has no impact on nutrient ratios.
Here's another illustration for you:
Ninety-nine grams of water has zero calories, 0 fat, carb, protein, etc. Add 1g of oil to that water. Our new beverage is "99% fat free," right? Nope, it has 9 calories, and all 9 calories come from fat. The beverage is 100% fat.</div>
First post here, and perhaps a bit off topic, but this is something that has had me perplexed for quite some time.
The example shown for 100g chicken breast comes from data pertaining to raw chicken. Fine. Here is my dilemma. On sites such as nutritiondata.com, calorieking, USDA, etc.. You have the option of selecting the method in which prepared in a variety of ways. When doing so and comparing "raw" to "cooked" the numbers change signifigantly. I don't eat my chicken raw, but I don't prepare it in the way these websites give you the option of either. I generally either cook them on the grill with some pepper or in a non-stick frying pan with cooking spray.
For someone like myself who tracks calories and macronutrients like it's a second job, it's important for me to have the most accurate data possible. If I'm calculating over a day that I'm ingesting 225 grams of protein, but in reality because of inaccurate information I'm only getting say 200, then I'm possibly shortchanging myself and feel would be cheating myself out of the max gains possible.
This not only applies to protein, but to all three major macronutrients.
I would love to have the luxury of being able to just wing it with my daily food intake, but I have to keep detailed logs, otherwise I will severely undereat.
The more I think about, the more I think alot of what I have been doing is wrong in some way. I have an extremely hard time making gains, despite taking in a fairly large excess. (according to my calculations, that is)
I am 5' 7" 152.5lb, and have a current daily goal of 3100 calories. Macro split is 50% carb, 30% prot, 20% fat.
For an added measure, I am also attaching a typical daily log for myself.
Any and all input is greatly appreciated.
Thanks everyone for reading!