Int J Sports Med
DOI: 10.1055/a-1263-1185
Training and Testing

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

Priscila Carvalho Santos
1  Department of Food and Nutrition, School of Pharmaceutical Science, Sao Paulo State University (UNESP), Sao Paulo, Brazil
,
Cleiton Augusto Libardi*
2  MUSCULAB—Laboratory of Neuromuscular Adaptations to Resistance Training, Department of Physical Education, Federal University of Sao Carlos, Sao Carlos, SP, Brazil
,
Sanmy Rocha Nóbrega
2  MUSCULAB—Laboratory of Neuromuscular Adaptations to Resistance Training, Department of Physical Education, Federal University of Sao Carlos, Sao Carlos, SP, Brazil
,
Milena Barbon de Carvalho
1  Department of Food and Nutrition, School of Pharmaceutical Science, Sao Paulo State University (UNESP), Sao Paulo, Brazil
,
Bryan Steve Martinez Galan
1  Department of Food and Nutrition, School of Pharmaceutical Science, Sao Paulo State University (UNESP), Sao Paulo, Brazil
,
Ellen Cristini de Freitas
1  Department of Food and Nutrition, School of Pharmaceutical Science, Sao Paulo State University (UNESP), Sao Paulo, Brazil
3  School of Physical Education and Sport of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, Brazil
› Author Affiliations
Funding: PCS and CAL also thank the supported of CAPES (Finance Code 001) and CNPq (302801/2018-9), respectively.

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.

* These authors contributed equally to this work.




Publication History

Received: 27 April 2020

Accepted: 02 September 2020

Publication Date:
15 October 2020 (online)

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