Tuesday, September 12, 2006

Protein Myths

Protein

Here's an excellent protein post I grabbed from the Supertraining Yahoo news group...it addresses many protein myths that people just can't seem to get over.

James Krieger is the auhtor of this info...

MYTH: The body's can't absorb more than 50 grams of protein per meal

SCIENCE:
There is no evidence that the body can only absorb 50 g of protein at asingle meal. Intestinal absorption limits are well over 300 grams. Inregards to metabolism, how protein is utilized (and how much can be"utilized" without being oxidized) is completely dependent upon one's dailyprotein intake, other nutrients consumed with meal, pattern of proteinintake, etc, etc, etc.

MYTH: Excess protein gets turned into ammonia and then urea (hard on the liver).

SCIENCE:
There's no scientific evidence that diets high in protein are hard on the liver.


MYTH: Romainian Weightlifters thrived on 2.2g/kg/day to 3.5g/kg/day inthis study,where the athletes experienced a 6% increase in lean muscle mass and a 5% increase in strength:

SCIENCE:
Keep in mind that the Romanian lifters were most likely on drugs, whichchanges their ability to store protein. In a drug-free lifter, 2.2 g/kg is excessive; research on drug-free strength athletes training 2 h/day for 6 days per week shows that anything beyond 1.6-1.8 g/kg is oxidized as an energy source.

James Krieger, M.S., M.S.,
ACSM-HFI
20/20 Lifestyles Research Associate
PRO Sports Clubhttp://www.proclub.com
Editor, Journal of Pure Powerhttp://www.jopp.us



protein myths

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