Diet Protein Content and Muscle Growth in Rats Submitted to Anaerobic Training.

• Autor(a) principal: Tonon, Claudio Roberto
• Data de Publicação: 2010
• Outros Autores: De Melo, Maria Alice Rostom, Dias, Thais Frigeni, Anaruma, Carlos Alberto
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Motriz (Online)
• Texto Completo: https://www.periodicos.rc.biblioteca.unesp.br/index.php/motriz/article/view/4114
• topic: Treinamento anaeróbio; dieta; proteína; músculo esquelético; rato.; Anaerobic training; diet; protein; skeletal muscle; rat.

This study was designed to evaluate the effects of diet protein content on skeletal muscle growth in response to anaerobic training in rats. Young male wistar rats were separated into two groups: Normal (N= 17%) and High (H= 35%) protein diet. Each group was subdivided: Sedentary (S) and Trained (T= jumping into the water, supporting a load of 50% of body weight, 10 30-second sessions interrupted by 1 min rest/day, 5 days/week). After 8 weeks gastsrocnemius cell number (DNA content) and size (protein/DNA), carcass, lipid and protein, and blood lactate after 10 exercise sessions were evaluated. All rats showed blood lactate above 8.0 mmol/l after exercise. Gastrocnemius muscle from HT-rats showed increased cell size (8%) in comparison to HS. No differences were observed among the groups in the other variables. These results indicate that the exercise protocol used is anaerobic and that the ingestion of the high protein diet revealed adaptations to anaerobic training that were not expressed while feeding on a normal protein diet.