alex1990 saidI've heard there's protein powders that are a combination of Whey and Casein too. Are those any good?
I do plan on getting a whey protein for post-workouts, and a casein protein to take before bed.
It depends on the dose. The limiting factor is cellular demand. Your body will uptake all the protein you throw at it. However, if your body is only using 30g an hour for homeostasis and cellular repair, the rest will go to energy stores.
You can't really say 'majority' without knowing demands and consumption, and full use is not dependent on steroids. You're right in some cases, but it is not a fair generalization.
30g of protein an hour seems absurdly high, where did you get that number? The DV for protein, depending on the individual, is roughly (per pound)
Sedentary adult 0.4 g
Active adult 0.4-0.6 g
Growing athlete 0.6-0.9 g
Adult building muscle mass 0.6-0.9 g
Taken from herehttp://www.rice.edu/~jenky/caryn/protein.htmlhttp://www.menshealth.com/mhlists/guide-to-protein/recommended-protein-intake.php
These have their own citations, you can find similar data anywhere on the web.
Anyway, the daily values for highly active adults would be 96-144 grams a day, as you can probably see, 30 grams an hour is a bit high, 30*24=720? Even post workout consumption has the upper limit of 20 grams.http://www.ncbi.nlm.nih.gov/pubmed/19056590
After 20 grams, higher levels of leucine oxidation of took place, which means that your body is just burning it as a source of fuel... not as part of the muscle building process.
Considering that a single serving of Greek yogurt is about 11%-8% of the daily value (10 grams)... and that most people consume way more than just Greek yogurt in a day, the American diet is after all, meat heavy... you don't actually need supplements. So yes, the word, "majority
" still holds.
"Your body will uptake all the protein you throw at it." No, our digestive systems aren't as special as we think they are. Too much protein (say, 50g) in one sitting will result in a good amount that just gets excreted out as it doesn't stay in the digestive for too long. A portion of what you do absorb will also get deaminized. I remember an experiment in one of my biochemistry classes talking about consuming protein that has been labeled with Nitrogen-15 with varying quantities, and then looking at nitrogen-15 content in the urine and feces afterwards with a mass spec. Consuming small amounts of protein throughout the day ends up resulting in less nitrogen-15 in the urine (as urea) and feces (as undigested protein), which means that more of it is kept within the body. Consuming large quantities in few sessions results in larger proportions of nitrogen 15 in the urine and feces which means fewer amounts of that protein are kept in the body. These different cases all consumed the same amount of protein, just at different quantities and intervals. I'll try to find this study... but it's a pretty "duh" conclusion. This study had different methods than the one I mentioned above, but arrived at the same conclusions...
The limiting factor is cellular demand, but 30 grams an hour, is, again, I hope you realize is ridiculously high. Cite your sources
Some people may claim that high protein consumption is what got them buff, but in reality, it is probably more to do with their level of commitment... chugging down +200 grams of protein throughout the day takes a lot of determination and probably suppressed appetite and reduced their cravings for fattier foods...