PMID: 11897890Mar 19, 2002Paper

Protein nutrition and resistance exercise

Canadian Journal of Applied Physiology = Revue Canadienne De Physiologie Appliquée
W J Evans

Abstract

Strength conditioning will result in an increase in muscle size and this increase in size is largely the result of increased contractile proteins. The mechanisms by which the mechanical events stimulate an increase in RNA synthesis and subsequent protein synthesis are not well understood. Lifting weight requires that a muscle shorten as it produces force (concentric contraction). Lowering the weight forces the muscle to lengthen as it produces force (eccentric contraction). Eccentric contractions produce ultrastructural damage that may stimulate increased muscle protein turnover and a cascade of metabolic events which is similar to an acute phase response and includes complement activation, mobilization of neutrophils, increased circulating and skeletal muscle interleukin-1 and macrophage accumulation. While endurance exercise increases the oxidation of essential amino acids and increases the requirement for dietary protein, resistance exercise results in a decrease in nitrogen excretion, lowering dietary protein needs. Research has indicated that increased dietary protein intake (up to 1.6 g protein x kg(-1) x d(-1)) may enhance the hypertrophic response to resistance exercise. It has also been demonstrated that in very old me...Continue Reading

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Citations

Sep 24, 2010·Journal of the International Society of Sports Nutrition·Matthew B CookeAlan Hayes
Nov 17, 2010·European Journal of Applied Physiology·D R PendergastN M Fisher
Sep 18, 2010·Journal of Obesity·Barbara Strasser, Wolfgang Schobersberger
Feb 4, 2014·Critical Care Nursing Clinics of North America·Helen W LachKristine M L'Ecuyer
Jun 1, 2010·Surgery for Obesity and Related Diseases : Official Journal of the American Society for Bariatric Surgery·Edward Shang, Till Hasenberg
Nov 25, 2004·Physical Medicine and Rehabilitation Clinics of North America·Mohamed S AhmedAdrian Cristian
Jan 7, 2014·Medicine and Science in Sports and Exercise·Jochen KresslerMark S Nash

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