Effect of Protein and Carbohydrate Combined with Resistance Training on Muscular Adaptation

Priscila Carvalho Santos; Cleiton Augusto Libardi; Sanmy Rocha Nóbrega; Milena Barbon de Carvalho; Bryan Steve Martinez Galan; Ellen Cristini de Freitas

doi:10.1055/a-1263-1185

International Journal of Sports Medicine, Inhaltsverzeichnis

Int J Sports Med 2021; 42(03): 259-263
DOI: 10.1055/a-1263-1185

Training and Testing

Effect of Protein and Carbohydrate Combined with Resistance Training on Muscular Adaptation

Priscila Carvalho Santos

¹Department of Food and Nutrition, School of Pharmaceutical Science, Sao Paulo State University (UNESP), Sao Paulo, Brazil

,

Cleiton Augusto Libardi^*

²MUSCULAB—Laboratory of Neuromuscular Adaptations to Resistance Training, Department of Physical Education, Federal University of Sao Carlos, Sao Carlos, SP, Brazil

,

Sanmy Rocha Nóbrega

²MUSCULAB—Laboratory of Neuromuscular Adaptations to Resistance Training, Department of Physical Education, Federal University of Sao Carlos, Sao Carlos, SP, Brazil

,

Milena Barbon de Carvalho

¹Department of Food and Nutrition, School of Pharmaceutical Science, Sao Paulo State University (UNESP), Sao Paulo, Brazil

,

Bryan Steve Martinez Galan

¹Department of Food and Nutrition, School of Pharmaceutical Science, Sao Paulo State University (UNESP), Sao Paulo, Brazil

,

Ellen Cristini de Freitas

¹Department of Food and Nutrition, School of Pharmaceutical Science, Sao Paulo State University (UNESP), Sao Paulo, Brazil

³School of Physical Education and Sport of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, Brazil

› Institutsangaben

Abstract

The purpose was to compare the effects of protein (whey protein) and carbohydrate supplementation and protein alone both combined with resistance training on muscle strength, muscle mass and total training volume progression in untrained young men. Resistance training was performed using the leg press and knee extension until concentric failure (8−12 repetition maximum), three times a week for eight weeks. Muscle strength and muscle cross-sectional area were assessed before and after training. Total training volume progression was calculated considering the first and eighth week. Seventeen men completed the study (protein and carbohydrate, n=9, age 23.44 ± 4.56 years, weight: 62.13±6.17 kg, height: 1.75±0.02 m, body mass index: 20.29±2.08 kg/m²; protein, n=8, age 24.63±2.39 years, weight: 69.01±5.57 kg, height: 1.77±0.07 m; body mass index: 21.64±1.05 kg/m². Both protocols showed similar increases in muscle strength (effect size: protein and carbohydrate=1.28; protein=0.97; p<0.001), muscle cross sectional area (effect size: protein and carbohydrate=0.66; protein=0.47; p<0.001) and total training volume progression (effect size: protein and carbohydrate=2.68; protein=1.63; p<0.001) after training. No differences were found between groups p>0.05). Protein and carbohydrate supplementation combined with resistance training does not induce greater gains in muscle strength, hypertrophy and total training volume compared to resistance training combined with protein alone in untrained individuals.

Key words

supplementation - whey protein - muscle cross-sectional area - strength - resistance training - ultrasound

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