Amino Acids Essential for Muscle Growth

23 Apr

Muscle mass declines gradually in middle age, a condition called sarcopenia. Muscle loss eventually leads to decreased strength and quality of life. Muscle is in a constant state of synthe­sis and breakdown and requires ade­quate protein intake to maintain size, even when overloaded thramino acids formulaough weight training. Amino acids that make up pro­teins serve as chemical signalers and building blocks for muscle proteins.

Researchers from McMaster University summarized how weight training and protein intake cause mus­cle growth. Leucine is the key amino acid for turning onboybuilder muscle protein syn­thesis (mTOR pathway), but muscle hypertrophy grinds to a halt without the full complement of essential amino acids. Following intense resistance exercise, muscle protein synthesis occurs in direct proportion to protein intake, peaking at 20-40 grams. The mTOR pathway is most active in fast-twitch muscle fibers, which respond best to high-intensity weight training. Peak muscle growth occurs when you concentrate on these fibers by empha­sizing high-stress training programs.

People over 40 years of age are less responsive to key amino acids, so they should consume protein often during the day to maintain muscle mass and prevent atrophy (muscle breakdown). Older adults should combine weight training and adequate protein intake to preserve muscle mass as they age.

9 Responses to “Amino Acids Essential for Muscle Growth”

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  8. paul mcelhinney October 18, 2013 at 4:32 pm #

    hi there thank you master muscle for this great blog about amino acids being essential for advancing in muscle growth. One thing i did not know is from the last section of your blog about People over 40 years of age are less responsive to key amino acids. Keep up the good written. please keep me informed of other up and coming blog posts.

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  9. iamkert November 24, 2013 at 2:55 pm #

    This is very interesting to know, as someone who has worked so hard to gain the muscle i have though kyle leons muscle maximizer, i would hate to lose it because of something so simple.

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