My understanding is that whey is absorbed quickly and is only used by your body for an hour or so, where casein starts slower and stays in use for up to like 6 hours.
How does meat/fish protein, or even eggs stack up to that? If I eat a can of tuna before bed (22g protein) will my body utilize that for a long time while I sleep?
Edited: Sorry, I accidentally said creatine instead of casein.
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Thread: Tuna vs. Whey/Casein Powder
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06-01-2009, 01:42 AM #1
Tuna vs. Whey/Casein Powder
Last edited by Blackjack68; 06-01-2009 at 01:47 AM.
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06-01-2009, 02:35 PM #2
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06-01-2009, 02:42 PM #3
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06-01-2009, 03:07 PM #4
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pretty good question. I would like to know this also. I do know that tuna is better than any of that protein powder. I also know that your body doesn't absorb 100% of any type of protein powder and that real food is absorbed much better. Meat takes a while to digest so my guess would be that tuna should stay there just as long as casein powder. I usually have a can of tuna right before bed along with a whey protein shake.
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06-01-2009, 03:15 PM #5
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06-01-2009, 03:52 PM #6
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It takes WHEY PROTEIN about 3hrs+/- to be fully digested
According to http://www.bodybuilding.com/fun/layne42.htm
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06-01-2009, 05:12 PM #7
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06-01-2009, 10:02 PM #8
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06-01-2009, 10:45 PM #9
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Article on food vs. protein supplements debate
http://www.formerfatguy.com/articles...s-vs-foods.asp
Study on protein absorption rates:
http://www.humankinetics.com/eJourna.../pdfs/5642.pdf
Heres a couple highlights:
Casein and Whey Protein
Absorption rates of ?fast? and ?slow? dietary proteins, whey (WP), and casein
(CAS) respectively, provide an interesting contrast in protein absorption kinetics.
In a study by Boirie et al. (38), subjects were fed 30 g (336 mmol N) of labeled
whey protein (13C-WP), or 43 g (479 mmol N) of labeled casein protein (13C-CAS),
with the same amount of dietary leucine (380 μmol/kg), where postprandial leucine
balance is used as an index of protein deposition (39, 48). The rapid absorption of
WP in the first 3 to 4 h accounted for the vast majority of amino acid absorption in
the order of 8 to10 g/h and ~ 6.1 g/h for CAS. A second study involved the repeated
consumption of 2.3 g of whey protein every 20 min (RPT-WP), (a rate of ~ 7g/h),
to mimic slowly absorbed amino acids. This was compared to a 30 g protein meal
of amino acids (AA). Estimated absorption rates were ~ 8 g/h and 6 g/h for AA
and RPT-WP, respectively (39).
There's then a summary at the bottom of the page that shows food proteins absorb much slower then whey or even casein. It also states that Casein protein is far superior to whey protein despite the "misconception" around sports figures because it provides 4-9 times more protein synthesis. After this study I'm going to stick to Casein protein and eat a lot more egg whites (much like Tim Ferris did in his great article on here.)A minute of perfection was worth the effort. A moment was the most you could ever expect from perfection.
-Chuck Palahniuk
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06-01-2009, 11:12 PM #10
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06-01-2009, 11:45 PM #11
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06-02-2009, 12:20 AM #12
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