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- Path: sparky!uunet!verifone!rachim_t1
- From: rachim_t1@verifone.com
- Newsgroups: misc.fitness
- Subject: Re: Protien consumption
- Message-ID: <1992Nov18.140242.4660@verifone.com>
- Date: 18 Nov 92 14:02:42 -1000
- References: <1992Nov5.173403.16568@cbfsb.cb.att.com> <1992Nov5.194950.544@fcom.cc.utah.edu>
- Organization: VeriFone Inc., Honolulu HI
- Lines: 69
-
- In article <1992Nov5.194950.544@fcom.cc.utah.edu>, freier@mail.physics.utah.edu (rodney james freier) writes:
- > In article <1992Nov5.173403.16568@cbfsb.cb.att.com>, mmm1@cbnewsf.cb.att.com (mark.m.miller) writes:
- > |> I would like some input as to the amount
- > |> of protien the body can digest and in what
- > |> kind of time period it is used. I have read
- > |> that the body can only digest up to 30 gm
- > |> of protien at each meal. Which to my understanding
- > |> this means that anything over this amount will
- > |> not be utilized by the body. My friend believes
- > |> that this is not true. His reasoning is that if
- > |> you intake say 50 gm of protein at say noon and
- > |> you do not go to the bathroom until 4:00, the body
- > |> will utilize all of the protien. But if you go to the
- > |> bathroom at 12:45 you will loose the unused portion
- > |> of protien. This does not sound right. Send any replies
- > |> to the net so that others can read and reply. (or should
- > |> I say fight it out).
- > |>
- > |> c-ya Mark
- > |> .
- > |>
- > I'm no expert, but here's what I know. I welcome corrections and additional
- > information.
- >
- > -- I'm pretty sure the Going-To-The-Bathroom-Affects-Protein-Absorption idea
- > is dead wrong. Protien is unique among the nutrients in that it contains nitrogen.
- > This nitrogen is necessary for building tissue. If the body needs all of the protien
- > eaten recently, it will use very nearly all of it for tissue maintenance and will not
- > destroy and excrete much.
- > If the body is not going to use protien for tissue mainenance or construction,
- > it has to "deaminate" it. Once protien is broken down, the nitrogen ends up in uric
- > acid, which is a toxin, and is then excreted. (You can tell how much nitrogen your
- > body is getting rid of by how yellow your urine is.)
- > There are two situations that will make the body deaminate protien:
- > 1) getting too much protien, and 2) not getting enough carbohydrates.
- > In the first case, your body will break down the excess protien, store some of the
- > resulting stuff as fat or burn it for energy, and excrete the nitrogen. In the
- > second case, WHETHER OR NOT YOU ARE GETTING ENOUGH PROTIEN, the body will have to
- > deaminate some to supply the brain with glucose. It will even destroy muscle
- > tissue to get this glucose, if it has to.
- >
- > Now, the GTTBAPA idea is wrong because the body will deaminate protien
- > whenever it needs to. The kidneys can remove the uric acid and store it in the
- > bladder REGARDLESS of when you choose to go to the bathroom.
- >
- > -- Next, the body's ability to absorb protien is not as constant as you suggest.
- > The body will absorb more protien when it needs to. For example, a person healing
- > from an injury will absorb more protien because tissues need to be rebuilt. Also,
- > protien absorption is the highest about 2-3 hours after strenuous weight-bearing
- > exercise. (Weight bearing exercise actually causes small tears in the muscle fibers,
- > so this is equivalent to the first example. Muscle growth is the body's way of
- > healing the injuries and preventing them from being as bad next time. This is
- > why you end up so sore after your first workout after a long period without exercise,
- > and why the following workouts are not as bad.)
- >
- > So, if you want to maximize your protien absorption, schedule protien rich
- > meals after exercise and eat LOTS of complex carbohydrates throughout the day.
- > Use your urine as an indicator. If it's clear or light yellow much of the time,
- > then you are getting enough complex carbohydrates. If it's usually dark yellow, you
- > are either eating too much protien or not getting enough carbs.
- >
- > Rod
- > freier@mail.physics.utah.edu
- sorry for including all that.
- All I want to ask here is, I notice that the color of my pee varies with the
- amount of fluid I drink. I can start the day with dark yellow, drink a gallon
- of water (well, maybe a quart) and my next pee will be considerably lighter.
- How does that fit in with the amount of protein/carbs theory?
- -RT
-