Effect of a 10-Week strength training program and recovery drink on body composition, muscular strength and endurance, and anaerobic power and capacity

Chromiak, Joseph A.; Smedley, Brianne; Carpenter, William H.; Brown, Robert L.; Koh, Yunsuk; Lamberth, John; Joe, Lee Ann; Abadie, Ben R.; Altorfer, Greg

doi:10.1016/j.nut.2004.01.005

Cited by 65 publications

(52 citation statements)

References 37 publications

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“…The finding of improved Wingate peak power output after a period of combined strength and cycle endurance training is similar to results obtained after a period of strength training only (Beck et al 2007;Chromiak et al 2004). The fact that the ability to generate high power output for a short period of time is an important factor in cycling performance highlights the practical importance of the present finding (Atkinson et al 2003).…”

Section: Paragraph Number 27supporting

confidence: 83%

“…The W max and the mean and peak power output in a Wingate test are factors that reflect the ability to generate high power output over a short period of time. It has been reported that peak power output in strength trained individuals is higher than in untrained individuals and that strength training in non-cyclists increases peak power output (Beck et al 2007;Chromiak et al 2004). The latter findings are supposedly explained by the fact that peak power output in cycling is affected by leg muscle CSA and that strength training increases this CSA (Izquierdo et al 2004).…”

Section: Paragraph Numbermentioning

confidence: 99%

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Effect of heavy strength training on thigh muscle cross-sectional area, performance determinants, and performance in well-trained cyclists

Rønnestad¹,

2009

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This file was dowloaded from the institutional repository Brage NIH -brage.bibsys.no/nih Rønnestad, B. R., Hansen, E. A., Raastad T. (2010). Effect of heavy strength training on thigh muscle cross-sectional area performance determinants and performance in well-trained cyclists. ] and mean power output in the 40-min all-out trial were improved in E+S (p<0.05). For E, only performance in the 40-min all-out trial tended to improve (p=0.057).The two groups showed similar increases in VO 2max (p<0.05). In conclusion, adding strength training to usual endurance training improved determinants of cycling performance as well as performance in well-trained cyclists. Of particular note is that the added strength training increased thigh muscle CSA without causing an increase in body mass.

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Section: Paragraph Number 27supporting

confidence: 83%

Section: Paragraph Numbermentioning

confidence: 99%

Effect of heavy strength training on thigh muscle cross-sectional area, performance determinants, and performance in well-trained cyclists

Rønnestad¹,

2009

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“…Further, no difference was observed between groups in the increases in muscle strength induced by squats [40]. Moreover, Chromiak et al [41] reported no significant difference in muscle strength and endurance between amino acid, creatine, whey protein, and carbohydrate supplement intake groups and a carbohydrate intake alone group after 10-week resistance exercise. However, other studies have shown that protein supplementation enhances power performance and knee extensor strength [42,43], and that a higher mixed MPS rate may be related to the increased peak power [44].…”

Section: Discussionmentioning

confidence: 93%

Protein Supplementation of a High-Carbohydrate Diet during Resistance Training Enhances Muscle Mass and Function by Increasing Essential Amino Acids

Shin¹,

Lee²,

Hong³

2017

Int J Phys Med Rehabil

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Objective: Previous studies have presented the effects of carbohydrate and protein intake using a single food or supplement. However, little knowledge is available regarding the long-term effects of protein diet supplementation on muscle mass and function. This study was conducted to investigate the effects of a 12-week high-intensity resistance exercise program combined with a high-carbohydrate (HCHO), high-protein (HPRO) diet on body composition, muscle function, anabolic/catabolic hormones, and blood amino acid levels.Methods: This study included 27 male college students, who were divided into an HPRO group (n=12) and an HCHO group (n=15). Three to five sets of resistance exercises were performed four times a week at 75% of 1-repetition maximum for 12 weeks. Results:The weight and body fat percentage decreased in both groups after the 12-week resistance exercise, and muscle mass increased in the HPRO group. The peak torque increased in the HPRO group, and the average power increased in both the HCHO and HPRO groups, although there was no significant difference between the changes in both groups. However, the testosterone level and the ratio of testosterone to cortisol increased in the HCHO group, and the changes were significantly different between the groups. The blood essential amino acid (EAA) and non-essential amino acid levels showed a time × group effect. Conclusion: Protein supplementation of a high-carbohydrate diet during resistance training may enhance body composition and muscle mass and function by increasing the blood EAA levels. Therefore, considering that Asians tend to consume high-carbohydrate diets, a diet with slightly less carbohydrate and increased protein may be more effective for increased muscle strength and mass during training.

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“…Ao término do treinamento, os autores observaram um aumento da força muscular em todos os grupos, porém nenhum efeito adicional da leucina foi observado. Tais resultados não são surpreendentes considerando prévios estudos, que examinaram os efeitos da suplementação crônica (4-10 semanas) de leucina combinada a outros nutrientes (EAAs, creatina, proteína de soro de leite e/ou carboidrato) sobre a força muscular [11][12][13][14] . Os achados destes estudos não demonstraram efeitos adicionais da suplementação de leucina sobre os ganhos de força muscular.…”

Section: Resultsunclassified

“…No entanto, prévios estudos que examinaram os efeitos da suplementação crônica (4-10 semanas) de leucina combinada a outros nutrientes (EAAs, creatina, proteína de soro de leite e/ou carboidrato), não relataram efeitos benéficos sobre a força muscular [11][12][13][14] . Além disso, nenhum estudo até o momento investigou os possíveis efeitos da suplementação isolada de leucina associada ao TR sobre a força muscular em sujeitos jovens.…”

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Efeitos da Suplementação de Leucina Associada ao Treinamento Resistido Sobre a Força Muscular em Sujeitos Jovens

et al. 2017

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A proposta do presente estudo foi avaliar os efeitos da suplementação de leucina associada ao treinamento resistido (TR) de alta intensidade sobre a força muscular em sujeitos jovens não treinados. Para tanto, 24 indivíduos jovens não treinados, de ambos os sexos, foram divididos em dois grupos (N = 12/grupo): Leucina (4g de leucina + 8g dextrose) e Placebo (12g dextrose). Ambos os grupos foram submetidos a um programa de TR de alta intensidade (3 séries de 12 repetições máximas; 2x/semana) com duração de 6 semanas, e consumiram seus respectivos suplementos imediatamente após cada sessão de treino. As sessões de treino consistiram na realização dos exercícios de leg press e cadeira extensora, a fim de maximizar o recrutamento do músculo quadríceps. Ambos os grupos foram submetidos ao teste de uma repetição máxima (1RM) nos exercícios de leg press e cadeira extensora, nos momentos pré e pós-treinamento. Ao término do treinamento, houve um significante (P < 0,05) aumento do 1RM em ambos os exercícios, mas nenhuma diferença foi observada entre os grupos. Além disso, a progressão da carga de treino foi similar (P > 0,05) entre os grupos, após 4 e 6 semanas de treinamento. Estes resultados indicam que a suplementação de uma baixa dose semanal de leucina (4g/dia; 2x/semana) associada ao TR em curto prazo não promove efeitos adicionais sobre a força muscular em indivíduos jovens não treinados.Palavras-chave: Músculo Esquelético. Suplementação Alimentar. Leucina. AbstractThe purpose of the study herein was to examine the leucine supplementation effects associated with high-intensity resistance training (RT) on muscle strength in young untrained subjects. Twenty-four young untrained subjects fromboth sexes were divided into two groups (N = 12/ group) IntroduçãoO aumento da massa muscular induzido pelo treinamento resistido (TR) é principalmente atribuído a uma ação coordenada de vias intracelulares, que controlam a relação entre síntese (anabolismo) e degradação (catabolismo) de proteínas contráteis no tecido muscular [1][2][3] . A via de sinalização da proteína alvo da rapamicina em mamíferos (mammalian target of rapamycin [mTOR]) tem sido descrita como uma das principais responsáveis pelo aumento da relação entre a taxa de síntese e degradação protéica miofibrilar em resposta ao exercício resistido 4 , e consequente aumento da massa muscular.A mTOR pode ser ativada por meio de estímulos mecânicos (ex: TR) e nutricionais (ex: consumo de proteínas) que convergem na fibra muscular 4 . Por exemplo, os aminoácidos essenciais (essential amino acid [EAAs]) (em particular a leucina) têm sido descritos como potenciais estimuladores da síntese protéica, por meio da ativação da via mTOR 4 . Prévios estudos relatam que a administração de leucina (1,35 g/kg de peso corporal) pode aumentar a taxa de síntese protéica (TSP) e o nível de estimulação da via mTOR no músculo esquelético de ratos desprovidos de alimento 5 . Adicionalmente, tem sido reportado um aumento da TSP em homens jovens, que consumiram uma bebida contendo EAAs enri...

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Effect of a 10-Week strength training program and recovery drink on body composition, muscular strength and endurance, and anaerobic power and capacity

Cited by 65 publications

References 37 publications

Effect of heavy strength training on thigh muscle cross-sectional area, performance determinants, and performance in well-trained cyclists

Effect of heavy strength training on thigh muscle cross-sectional area, performance determinants, and performance in well-trained cyclists

Protein Supplementation of a High-Carbohydrate Diet during Resistance Training Enhances Muscle Mass and Function by Increasing Essential Amino Acids

Efeitos da Suplementação de Leucina Associada ao Treinamento Resistido Sobre a Força Muscular em Sujeitos Jovens

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