RE: Protein intake above 2 g/kg

[Guest guest]

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Posted by: " Bryce Teager "

Thu Sep 7, 2006 1:43 am (PST)

My professor challenged our class to find any research that showed

that taking more than 2.0 grams of protein/kg/day. is more

beneficial

than taking the 1.2-1.8 grams/kg that is recommended by the ACSM

(this

is for any athlete, including weightlifters, bodybuilders,

strongmen,

ultramarathoners...ect.).

He states that taking anymore than 2.0 grams/kg. is just going to

give

you expensive urine and the kidneys can't handle any more than that.

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Assuming someone is drug-free, the professor is partly correct. Protein

intakes above 1.8 g/kg are oxidized for energy. Please see research by Mark

Tarnopolsky on this, showing dramatically increased leucine oxidation rates

at protein intakes above 2 g/kg, without a corresponding increase in protein

synthesis.

I'm not sure what your prof means by the kidneys " can't handle any more than

that. " There is no evidence that diets high in protein are harmful to

kidneys.

Krieger, M.S., M.S., ACSM-HFI

20/20 Lifestyles Research Associate

PRO Sports Club

http://www.proclub.com

Editor, Journal of Pure Power

http://www.jopp.us