Effect of Aerobic and Anaerobic Training on Different Ergometers in Rat Muscle and Heart Tissues

Abstract

Objective Analyze the effects of aerobic and anaerobic training on different ergometers on muscle and cardiac hypertrophy in rats. Methods The animals were separated into the following groups: Control (C), Aerobic Training in Water (ATW), Resistance Training in Water (RTW), Aerobic Training on Treadmill (ATT), and Resistance Training in Climbing (RTC). All training protocols were carried out for 4 weeks, 3 times/week. The cross-sectional area (CSA) of the gastrocnemius muscle cells and the areas of the cardiomyocytes were measured. Results In the fast-twitch fibers, there was an increase in CSA in the RTW and RTC groups compared to the ATW (p<0.01 and p<0.01) and ATT groups (p<0.01 and p<0.01). In the slow-twitch fibers, the ATW and ATT groups demonstrated a lower CSA compared to the RTW (p=0.03 and p<0.00) and RTC groups (p<0.01 and p<0.01). In the cardiomyocytes, there was an increase in the area of the RTW and RTC groups compared to groups C (p<0.01; p<0.01), ATW (p=0.02; p<0.01), and ATT (p<0.01; p<0.01). Conclusion The anaerobic training effectively promotes hypertrophy in the fast-twitch fibers and the cardiomyocytes. Level of Evidence V; Animal experimental study.

Relato De Experiência: O Uso De Glossário Na Disciplina De Paleontologia

“…Apesar de todos os grupos de LE apresentarem aumento na massa corporal é importante destacar que o aumento entre CTRL L e CATR L , provavelmente, se deve por motivos diferentes, pois CATR L passou por protocolo de treinamento de 4 semanas, enquanto CTRL L aumentou de massa sem executar treinamento ou se expor ao uma condição ambiental fora da faixa de conforto, o que sugere uma possível diferença na composição corporal desses animais. A diferença observada sugere maior desenvolvimento de massa magra em CATR L em comparação a CTRL L devido ao treinamento físico realizado durante o protocolo, assim como demonstrado em estudo prévio (OZAKI et al, 2022).…”

“…Conselho Nacional de Desenvolvimento Científico e Tecnológico -CNPQ. Febre amarela 124,125,126,129,130,131,133,136,137,138 Fitoplâncton 53,55,56,62,63,65 Fitoquímicos 163,164,165,166,167,168,169,173,174 Flebotomíneos 3,6,7,8,10,11,15,16,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33 Flor 68,69,71,73,111,113,116,118,119,…”