Just Whey Protein?

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Just Whey Protein?
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Just Whey Protein? - Apr. 21 2008 22:09:50

xweighted

Posts: 31
Joined: Feb. 21 2008
Status: offline

I know you can't beat solid foods and I usually get 300g + proetein/day from solid foods and only have a protein shake on waking and after workout.

So just hyperthetically speaking has anyone wondered what sort of progress you would make on just whey as a protein source.

I am just trying to figure out how good a protein source it really is.

Obviously it is fast acting so maybe a shake an hour?

Interested to hear peoples opinions.

Post #: 1

RE: Just Whey Protein? - Apr. 21 2008 22:48:19

fraser

Posts: 1983
Joined: Jun. 18 2006
From: ABERDEEN
Status: offline

Judging whey by biological value and protein digestibility corrected amino acid scoring it's ace, but as you say because it's partially digested you need to have a regular intake for it to be effective or slow it down in some way- usually by having it with fats and fibre. There's a study where folk were fed either:

30g whey in one go;
43g casein in one go;
or 2.3g whey every 20 mins
(they were all given identical amounts of the amino acid leucine as well)
they measured their protein deposition by taking a note of leucine balance a while after they'd consumed the pro- whey came out the fastest by a long shot, casein was slower and delayed protein breakdown much longer, whey every 20 mins mimicked the slower digesting pro- both methods were much better at improving protein balance than the 1 shot of whey

(in reply to xweighted)

Post #: 2

RE: Just Whey Protein? - Apr. 21 2008 23:23:09

1MR

Posts: 10467
Joined: Nov. 5 2006
From: Preston, UK
Status: offline

quote:

Obviously it is fast acting so maybe a shake an hour?

I can't find you any data sorry, but I'm relatively sure that very frequent hyperaminoacidemia will result in poor overall protein synthesis, compared to regualrily varying amino profiles and absorptions. If anyone has any information on this (or dispell it as myth), I'd be very greatful.

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ORIGINAL: FromTheAshes
There is no shame whatsoever in doing what you need to do, to get you where you need to be. Thats resolve.

(in reply to fraser)

Post #: 3

RE: Just Whey Protein? - Apr. 21 2008 23:30:32

fraser

Posts: 1983
Joined: Jun. 18 2006
From: ABERDEEN
Status: offline

I've got a few fancy protein studies on my comp but they're not available online; the one ref'd above shows protein synthesis is 4 times greater with casein and 9 times greater with repeated doeses of whey compared to the single dose of whey... but what sort of weirdo sits and eats protein powder by itself?!

(in reply to 1MR)

Post #: 4

RE: Just Whey Protein? - Apr. 22 2008 11:51:35

fraser

Posts: 1983
Joined: Jun. 18 2006
From: ABERDEEN
Status: offline

an oldie but a goodie
http://www.humankinetics.com/eJournalMedia/pdfs/5642.pdf

(in reply to xweighted)

Post #: 5