Re: Protein / Fats/ Carbs relative to bodyweight



E

elzinator

Guest
Proton Soup wrote:
> On Sun, 06 Feb 2005 17:13:01 -0500, JMW <[email protected]> wrote:
>
> >"Sam" <[email protected]> wrote:
> >
> >>The research literature is pretty clear that taking in more than

2g/kg is,
> >>for most people, excessive. The higher protein intakes are either

stored as
> >>fat or excreted (these are usually checked with nitrogen levels).

> >
> >Regarding the fat storage, you're skipping a few steps ...


It is relative to total caloric intake.

> Do you know if there are any studies that compare protein

requirements
> of growing, weight-training athletes, versus those who have "reached
> their genetic potential" / "plateaued" / etc. ? Intuitively at

least,
> it seems like "optimum" protein requirements would be quite high for

a
> beginning, hypertrophy-minded strength athlete, but over time those
> requirements would decrease, probably on an inverse exponential type
> curve, approaching some asymptote.


Protein turnover (synthesis and breakdown) is a constant process. Even
those who don't exercise have a baseline turnover which is tissue and
organ specific (so it it temporally and spatially relative). The rate
of turnover is relative to the stimuli that induces breakdown. If more
protein is degraded due to an external (e.g. exercise) or internal
(e.g. disease/illness) stimulus, the body will attempt to return to a
baseline homeostasis. The rate or degree of that will depend on the
available substrates as well as several other factors.

So it all depends on several factors: initial conditioning (including
structural and metabolic adaptation or de-adaptation), volume and
intensity of training, overall diet and lifestyle, and age.