Proteína Para Síntese Proteica e Hipertrofia Muscular de Adultos: Quanto, Quando e Como Consumir?

O ganho de massa muscular ocorre por meio do equilíbrio entre os processos de síntese e degradação proteica. Desta forma, o exercício de força e o consumo adequado de proteínas estimulam a síntese proteica da musculatura esquelética, o que induz estímulos hipertróficos. Neste contexto, o consumo protéico diário deve ser de 0,8 a 1,0 g/kg/dia para indivíduos inativos fisicamente e 1,2 a 2,0 g/kg/dia para praticantes de exercício físico de força. Com relação às diferentes fontes proteicas, a quantidade de leucina é um fator essencial para determinar sua qualidade. Neste sentido, estudos mostram que o consumo de aproximadamente 0,25-0,30g de proteína/kg/refeição, que contenha 2-3 g de leucina, parece estimular de forma máxima a síntese proteica. Além disso, propõe-se que o fracionamento homogêneo ao longo do dia, o consumo protéico após o exercício e antes de dormir parecem ser estratégias importantes para síntese proteica e hipertrofia muscular. Contudo, esses dados devem ser utilizados com cautela, pois ainda há poucos estudos que avaliaram estas intervenções na hipertrofia muscular. Portanto, o objetivo desta revisão narrativa é realizar uma avaliação crítica dos principais estudos que avaliam o efeito da qualidade, quantidade e momento do consumo protéico na síntese proteica e/ou hipertrofia muscular em indivíduos jovens.

Referências

Rose AJ, Richter EA: Regulatory mechanisms of skeletal muscle protein turnover during exercise. Journal of applied physiology 2009, 106(5):1702-1711.

Srikanthan P, Karlamangla AS: Muscle mass index as a predictor of longevity in older adults. The American journal of medicine 2014, 127(6):547-553.

Wall BT, Snijders T, Senden JM, Ottenbros CL, Gijsen AP, Verdijk LB, van Loon LJ: Disuse impairs the muscle protein synthetic response to protein ingestion in healthy men. The Journal of clinical endocrinology and metabolism 2013, 98(12):4872-4881.

Moore DR, Churchward-Venne TA, Witard O, Breen L, Burd NA, Tipton KD, Phillips SM: Protein ingestion to stimulate myofibrillar protein synthesis requires greater relative protein intakes in healthy older versus younger men. J Gerontol A Biol Sci Med Sci 2015, 70(1):57-62.

Dodds RM, Roberts HC, Cooper C, Sayer AA: The Epidemiology of Sarcopenia. Journal of clinical densitometry : the official journal of the International Society for Clinical Densitometry 2015, 18(4):461-466.

Gong Z, Muzumdar RH: Pancreatic function, type 2 diabetes, and metabolism in aging. International journal of endocrinology 2012, 2012:320482.

Stephens FB, Chee C, Wall BT, Murton AJ, Shannon CE, van Loon LJ, Tsintzas K: Lipid-induced insulin resistance is associated with an impaired skeletal muscle protein synthetic response to amino acid ingestion in healthy young men. Diabetes 2015, 64(5):1615-1620.

Katsanos CS, Kobayashi H, Sheffield-Moore M, Aarsland A, Wolfe RR: A high proportion of leucine is required for optimal stimulation of the rate of muscle protein synthesis by essential amino acids in the elderly. American journal of physiology Endocrinology and metabolism 2006, 291(2):E381-387.

Rennie MJ: Why muscle stops building when it's working. The Journal of physiology 2005, 569(Pt 1):3.

Rieu I, Balage M, Sornet C, Giraudet C, Pujos E, Grizard J, Mosoni L, Dardevet D: Leucine supplementation improves muscle protein synthesis in elderly men independently of hyperaminoacidaemia. The Journal of physiology 2006, 575(Pt 1):305-315.

Areta JL, Burke LM, Ross ML, Camera DM, West DW, Broad EM, Jeacocke NA, Moore DR, Stellingwerff T, Phillips SM et al: Timing and distribution of protein ingestion during prolonged recovery from resistance exercise alters myofibrillar protein synthesis. The Journal of physiology 2013, 591(9):2319-2331.

Bohe J, Low A, Wolfe RR, Rennie MJ: Human muscle protein synthesis is modulated by extracellular, not intramuscular amino acid availability: a dose-response study. The Journal of physiology 2003, 552(Pt 1):315-324.

Bohe J, Low JF, Wolfe RR, Rennie MJ: Latency and duration of stimulation of human muscle protein synthesis during continuous infusion of amino acids. The Journal of physiology 2001, 532(Pt 2):575-579.

Cermak NM, Res PT, de Groot LC, Saris WH, van Loon LJ: Protein supplementation augments the adaptive response of skeletal muscle to resistance-type exercise training: a meta-analysis. Am J Clin Nutr 2012, 96(6):1454-1464.

Medicine Io: Dietary Reference Intakes for Energy, Carbohydrate, Fiber, Fat, Fatty Acids, Cholesterol, Protein, and Amino Acids (Macronutrients). Washington, DC: The National Academies Press; 2005.

Thomas DT, Erdman KA, Burke LM: Position of the Academy of Nutrition and Dietetics, Dietitians of Canada, and the American College of Sports Medicine: Nutrition and Athletic Performance. J Acad Nutr Diet 2016, 116(3):501-528.

American Dietetic A, Dietitians of C, American College of Sports M, Rodriguez NR, Di Marco NM, Langley S: American College of Sports Medicine position stand. Nutrition and athletic performance. Medicine and science in sports and exercise 2009, 41(3):709-731.

Phillips SM: Dietary protein requirements and adaptive advantages in athletes. The British journal of nutrition 2012, 108 Suppl 2:S158-167.

Phillips SM, Van Loon LJ: Dietary protein for athletes: from requirements to optimum adaptation. Journal of sports sciences 2011, 29 Suppl 1:S29-38.

Murphy CH, Churchward-Venne TA, Mitchell CJ, Kolar NM, Kassis A, Karagounis LG, Burke LM, Hawley JA, Phillips SM: Hypoenergetic diet-induced reductions in myofibrillar protein synthesis are restored with resistance training and balanced daily protein ingestion in older men. American journal of physiology Endocrinology and metabolism 2015, 308(9):E734-743.

Hector AJ, Marcotte GR, Churchward-Venne TA, Murphy CH, Breen L, von Allmen M, Baker SK, Phillips SM: Whey Protein Supplementation Preserves Postprandial Myofibrillar Protein Synthesis during Short-Term Energy Restriction in Overweight and Obese Adults. J Nutr 2015, 145(2):246-252.

Phillips SM, Zemel MB: Effect of protein, dairy components and energy balance in optimizing body composition. Nestle Nutrition Institute workshop series 2011, 69:97-108; discussion 108-113.

Mettler S, Mitchell N, Tipton KD: Increased protein intake reduces lean body mass loss during weight loss in athletes. Medicine and science in sports and exercise 2010, 42(2):326-337.

Longland TM, Oikawa SY, Mitchell CJ, Devries MC, Phillips SM: Higher compared with lower dietary protein during an energy deficit combined with intense exercise promotes greater lean mass gain and fat mass loss: a randomized trial. The American journal of clinical nutrition 2016, 103(3):738-746.

Devries MC, Phillips SM: Supplemental protein in support of muscle mass and health: advantage whey. Journal of food science 2015, 80 Suppl 1:A8-A15.

Burd NA, Gorissen SH, van Vliet S, Snijders T, van Loon LJ: Differences in postprandial protein handling after beef vs. milk ingestion during postexercise recovery: a randomized controlled trial. Am J Clin Nutr 2015.

Fouillet H, Mariotti F, Gaudichon C, Bos C, Tome D: Peripheral and splanchnic metabolism of dietary nitrogen are differently affected by the protein source in humans as assessed by compartmental modeling. The Journal of nutrition 2002, 132(1):125-133.

Tang JE, Phillips SM: Maximizing muscle protein anabolism: the role of protein quality. Current opinion in clinical nutrition and metabolic care 2009, 12(1):66-71.

Drummond MJ, Dreyer HC, Fry CS, Glynn EL, Rasmussen BB: Nutritional and contractile regulation of human skeletal muscle protein synthesis and mTORC1 signaling. J Appl Physiol (1985) 2009, 106(4):1374-1384.

Burd NA, Yang Y, Moore DR, Tang JE, Tarnopolsky MA, Phillips SM: Greater stimulation of myofibrillar protein synthesis with ingestion of whey protein isolate v. micellar casein at rest and after resistance exercise in elderly men. The British journal of nutrition 2012, 108(6):958-962.

Reitelseder S, Agergaard J, Doessing S, Helmark IC, Lund P, Kristensen NB, Frystyk J, Flyvbjerg A, Schjerling P, van Hall G et al: Whey and casein labeled with L-[1-13C]leucine and muscle protein synthesis: effect of resistance exercise and protein ingestion. American journal of physiology Endocrinology and metabolism 2011, 300(1):E231-242.

van Vliet S, Burd NA, van Loon LJ: The Skeletal Muscle Anabolic Response to Plant- versus Animal-Based Protein Consumption. J Nutr 2015, 145(9):1981-1991.

Witard OC, Jackman SR, Breen L, Smith K, Selby A, Tipton KD: Myofibrillar muscle protein synthesis rates subsequent to a meal in response to increasing doses of whey protein at rest and after resistance exercise. The American journal of clinical nutrition 2014, 99(1):86-95.

Phillips SM: The impact of protein quality on the promotion of resistance exercise-induced changes in muscle mass. Nutr Metab (Lond) 2016, 13:64.

Moore DR, Robinson MJ, Fry JL, Tang JE, Glover EI, Wilkinson SB, Prior T, Tarnopolsky MA, Phillips SM: Ingested protein dose response of muscle and albumin protein synthesis after resistance exercise in young men. The American journal of clinical nutrition 2009, 89(1):161-168.

Cuthbertson D, Smith K, Babraj J, Leese G, Waddell T, Atherton P, Wackerhage H, Taylor PM, Rennie MJ: Anabolic signaling deficits underlie amino acid resistance of wasting, aging muscle. FASEB journal : official publication of the Federation of American Societies for Experimental Biology 2005, 19(3):422-424.

Tipton KD, Elliott TA, Cree MG, Aarsland AA, Sanford AP, Wolfe RR: Stimulation of net muscle protein synthesis by whey protein ingestion before and after exercise. American journal of physiology Endocrinology and metabolism 2007, 292(1):E71-76.

Phillips SM: A brief review of higher dietary protein diets in weight loss: a focus on athletes. Sports medicine 2014, 44 Suppl 2:S149-153.

Atherton PJ, Etheridge T, Watt PW, Wilkinson D, Selby A, Rankin D, Smith K, Rennie MJ: Muscle full effect after oral protein: time-dependent concordance and discordance between human muscle protein synthesis and mTORC1 signaling. The American journal of clinical nutrition 2010, 92(5):1080-1088.

Naderi A, de Oliveira EP, Ziegenfuss TN, Willems MET: Timing, Optimal Dose and Intake Duration of Dietary Supplements with Evidence-Based Use in Sports Nutrition. J Exerc Nutrition Biochem 2016, 20(4):1-12.

Macnaughton LS, Wardle SL, Witard OC, McGlory C, Hamilton DL, Jeromson S, Lawrence CE, Wallis GA, Tipton KD: The response of muscle protein synthesis following whole-body resistance exercise is greater following 40 g than 20 g of ingested whey protein. Physiol Rep 2016, 4(15).

Mitchell CJ, Churchward-Venne TA, Parise G, Bellamy L, Baker SK, Smith K, Atherton PJ, Phillips SM: Acute post-exercise myofibrillar protein synthesis is not correlated with resistance training-induced muscle hypertrophy in young men. PLoS One 2014, 9(2):e89431.

Tang JE, Perco JG, Moore DR, Wilkinson SB, Phillips SM: Resistance training alters the response of fed state mixed muscle protein synthesis in young men. American journal of physiology Regulatory, integrative and comparative physiology 2008, 294(1):R172-178.

Phillips SM, Tipton KD, Aarsland A, Wolf SE, Wolfe RR: Mixed muscle protein synthesis and breakdown after resistance exercise in humans. The American journal of physiology 1997, 273(1 Pt 1):E99-107.

Burd NA, West DW, Moore DR, Atherton PJ, Staples AW, Prior T, Tang JE, Rennie MJ, Baker SK, Phillips SM: Enhanced amino acid sensitivity of myofibrillar protein synthesis persists for up to 24 h after resistance exercise in young men. The Journal of nutrition 2011, 141(4):568-573.

Schoenfeld BJ, Aragon AA, Krieger JW: The effect of protein timing on muscle strength and hypertrophy: a meta-analysis. Journal of the International Society of Sports Nutrition 2013, 10(1):53.

Res PT, Groen B, Pennings B, Beelen M, Wallis GA, Gijsen AP, Senden JM, LJ VANL: Protein ingestion before sleep improves postexercise overnight recovery. Med Sci Sports Exerc 2012, 44(8):1560-1569.

Snijders T, Res PT, Smeets JS, van Vliet S, van Kranenburg J, Maase K, Kies AK, Verdijk LB, van Loon LJ: Protein Ingestion before Sleep Increases Muscle Mass and Strength Gains during Prolonged Resistance-Type Exercise Training in Healthy Young Men. J Nutr 2015, 145(6):1178-1184.

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