Cardio em Jejum
Resumen
O jejum é a abstenção de consumir alimentos e bebidas por um determinado tempo. Tanto os sistemas de saúde tradicionais quanto os modernos usam jejuns como forma de ajudar a gerenciar doenças crônicas não infecciosas. Durante o jejum, a atividade aumenta a lipólise do tecido adiposo (queima de gordura na gordura adiposa) enquanto aumenta a oxidação de ácidos graxos nos órgãos periféricos, o que aumenta a queima de gordura e a perda de peso. A principal coisa que esta análise estava investigando é se o treinamento de resistência realizado em jejum induz adaptações específicas no treinamento, em que o aumento da oxidação de gordura melhora os níveis de treinamento de resistência a longo prazo. Alguns dados mostram que o jejum tem uma influência mais ampla no metabolismo corporal tanto em indivíduos não treinados quanto treinados, afetando o metabolismo de proteínas e glicose. Há informações conflitantes sobre como o jejum afeta o metabolismo da glicose em atletas altamente treinados, e o impacto no desempenho também não é claro (alguns dizem que tem um impacto negativo, outros dizem que não há efeito significativo). O jejum diminui o peso corporal de indivíduos treinados e não treinados, juntamente com o teor de gordura. Há pouca evidência de que o treinamento de resistência e o jejum juntos aumentam a oxidação da gordura, pois muitos estudos têm resultados conflitantes. Embora existam diferenças nos detalhes dos experimentos, como a gravidade da restrição calórica, quanto tempo durou o experimento e quem eram os participantes. Em nossa revisão da literatura, sugerimos que os atletas não devem fazer treinamento de alta intensidade em jejum.
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Andersson Hall U, Edin F, Pedersen A, Madsen K. Whole-body fat oxidation increases more by prior exercise than overnight fasting in elite endurance athletes. Appl Physiol Nutr Metab. 2015;41(4):430–437.
Bassuk SS & Manson JE (2005) Epidemiological evidence for the role of physical activity in reducing risk of type 2 diabetes and cardiovascular disease. J Appl Physiol 99, 1193–1204.
Boirie Y, Dangin M, Gachon P, Vasson MP, Maubois JL, Beaufrere B. Slow and fast dietary proteins differently modulate postprandial protein accretion. Proc Natl Acad Sci U S A 1997;94:14930–14935.
Burke DG, Smith-Palmer T, Holt LE, Head B, Chilibeck PD. The effect of 7 days of creatine supplementation on 24-hour urinary creatine excretion. J Strength Cond Res 2001;15:59–62.
Chaouachi A, Coutts AJ, Chamari K, et al. Effect of Ramadan intermittent fasting on aerobic and anaerobic performance and perception of fatigue in male elite judo athletes. J Strength Cond Res. 2009;23(9):2702–2709. doi:10.1519/JSC.0b013e3181bc17fc
Cahill GF Jr (2006) Fuel metabolism in starvation. Annu Rev Nutr 26, 1–22.
Coyle EF, Coggan AR, Hemmert M, Ivy JL. Muscle glycogen utilization during prolonged strenuous exercise when fed carbohydrate. J Appl Physiol. 1986;61(1):165–172. doi:10.1152/jappl.1986. 61.1.165
Chromiak JA, Antonio J. Use of amino acids as growth hormone-releasing agents by athletes. Nutrition 2002;18:657–661.
Dangin M, Boirie Y, Garcia-Rodenas C, et al. The digestion rate of protein is an independent regulating factor of postprandial protein retention. Am J Physiol Endocrinol Metab 2001;280:E340–E348.
De Bock K, Richter EA, Russell AP, et al. (2005) Exercise in the fasted state facilitates fibre type-specific intramyocellular lipid breakdown and stimulates glycogen resynthesis in humans. J Physiol 564, 649–660.
Donnelly JE, Blair SN, Jakicic JM, et al. (2009) American College of Sports Medicine Position Stand. Appropriate physical activity intervention strategies for weight loss and prevention of weight regain for adults. Med Sci Sports Exerc 41, 459–471.
Driskell J, Wolinsky I (eds) Energy-Yielding Macronutrients and Energy Metabolism in Sports Nutrition. CRC Press, Boca Raton, FL, 2000.
Fruhbeck G. Protein metabolism: slow and fast dietary proteins. Nature 1998;391:843, 845.
Enevoldsen LH, Simonsen L, Macdonald IA, et al. (2004) The combined effects of exercise and food intake on adipose tissue and splanchnic metabolism. J Physiol 561, 871–882.
Gieske BT, Stecker RA, Smith CR, et al. Metabolic impact of protein feeding prior to
moderate-intensity treadmill exercise in a fasted state: A pilot study. J Int Soc Sports Nutr 15: 56, 2018.
Horowitz JF, Mora-Rodriguez R, Byerley LO, Coyle EF. Substrate metabolism when subjects are fed carbohydrate during exercise. Am J Physiol Endocrinol Metab. 1999;276(5):E828–E835.
Hultman E, Soderlund K, Timmons JA, Cederblad G, Greenhaff PL. Muscle creatine loading in men. J Appl Physiol 1996;81:232–237.
Ja¨ger R, Kerksick CM, Campbell BI, et al. International society of sports nutrition position stand: Protein and exercise. J Int Soc Sports Nutr 14: 20, 2017.
Kirkendall DT, Leiper JB, Bartagi Z, Dvorak J, Zerguini Y. The influence of Ramadan on physical performance measures in young Muslim footballers. J Sports Sci. 2008;26(S3):S15–S27.
Larijani B, Zahedi F, Sanjari M, et al. The effect of Ramadan fasting on fasting serum glucose in healthy adults. Med J Malaysia. 2003;58(5):678–680.
Lemon PW, Mullin JP. Effect of initial muscle glycogen levels on protein catabolism during exercise. J Appl Physiol 48: 624–629, 1980.
Longo VD ; Mattson MP . Fasting: molecular mechanisms and clinical applications. Cell Metab 19, 2014,181–192.
Maughan RJ, Fallah J & Coyle EF (2010) The effects of fasting on metabolism and performance. Br J Sports Med 44, 490–494.
Meckel Y, Ismaeel A, Eliakim A. The effect of the Ramadan fast on physical performance and dietary habits in adolescent soccer players. Eur J Appl Physiol. 2008;102(6):651–657.
Robinson SL, Hattersley J, Frost GS, et al. (2015) Maximal fat oxidation during exercise is positively associated with 24-hour fat oxidation and insulin sensitivity young, healthy men. J Appl Physiol 118, 1415–1422.
Rosenkilde M, Nordby P, Nielsen LB, et al. (2010) Fat oxidation at rest predicts peak fat oxidation during exercise and metabolic phenotype in overweight men. Int J Obes 34, 871–877.
Shimada K, Yamamoto Y, Iwayama K, et al. (2013) Effects of post-absorptive and postprandial exercise on 24 h fat oxidation. Metabolism 62, 793–800.
Spriet LL (2014) New insights into the interaction of carbohydrate and fat metabolism during exercise. Sports Med 44, S87–S96.
Stannard SR, Buckley AJ, Edge JA, Thompson MW. Adaptations to skeletal muscle with endurance exercise training in the acutely fed versus overnight-fasted state. J Sci Med Sport. 2010;13(4):465– 469.
Sweileh N, Schnitzler A, Hunter G, Davis B. Body composition and energy metabolism in resting and exercising muslims during Ramadan fast. J Sports Med Phys Fitness. 1992;32(2):156–163.
Vandenberghe K, Goris M, Van Hecke P, Van Leemputte M, Vangerven L, Hespel P. Long-term creatine intake is beneficial to muscle performance during resistance training. J Appl Physiol 1997;83:2055–2063.
Van Proeyen K, Szlufcik K, Nielens H, Ramaekers M, Hespel P. Beneficial metabolic adaptations due to endurance exercise training in the fasted state. J Appl Physiol. 2010;110(1):236–245.
Venables MC & Jeukendrup AE (2008) Endurance training and obesity: effect on substrate metabolism and insulin sensitivity. Med Sci Sports Exerc 40, 495–502.
Vieira AF, Costa RR, Macedo RCO, Coconcelli L, Kruel LFM. Effects of aerobic exercise performed in fasted v. fed state on fat and carbohydrate metabolism in adults: a systematic review and meta-analysis. Br J Nutr. 2016;116(7):1153–1164.
Wal JSV, Gupta A, Khosla P,Dhurandhar NV. Egg breakfast enhances weight loss. Int J Obes 32:1545–1551, 2008.
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