O que está perto da queda muscular? Inflamação muscular e respostas EMG ao treino de resistência em diferentes áreas da queda muscular

Autores

  • Bruno de Freitas Rodrigues https://orcid.org/0009-0004-1078-0183
  • Marcelo Danillo Matos dos Santos
  • Eduardo Mendonça Pimenta
  • Lucas Túlio Lacerda
  • Marcel Bahia Lanza
  • Gustavo Ferreira Pedrosa
  • Fernando Vitor Lima
  • Mauro Heleno Chagas
  • Rodrigo César Ribeiro Diniz UFMG

DOI:

https://doi.org/10.47197/retos.v81.118964

Palavras-chave:

Área de secção transversal, ativação muscular, número de repetições, treino de resistência

Resumo

Introdução: A zona muscular e a eletromiografia (EMG) são marcadores não invasivos das respostas periféricas e neuromusculares no treino de resistência. No entanto, nenhum estúdio examinou como a proximidade da falha muscular é respondida em indivíduos treinados.

Objectivo: Este estudo comparou as respostas agudas de EMG e contracções musculares em seis protocolos com especificidades específicas para falhas em homens treinados.

Metodologia: Catorce hombres realizou a extensão bilateral da haste com quatro séries a 60% de uma repetição máxima. Os protocolos incluíam a queda muscular (MF) e cinco condições sem queda (NMF) com menos 10%, 20%, 30%, 40% e 50% de repetições que o MF. É avaliada a área transversal (ecografia) e o EMG normalizado (eléctrodos de superfície) do reto femoral e vasto lateral antes e depois do treino.

Resultados: A cintura muscular difiriu significativamente entre todos os protocolos para ambos os músculos (p < 0,05), aumentando progresivamente conforme as repetições se acercaban al fallo. O El MF produziu a maior ativação do EMG; No entanto, os protocolos NMF com pequenas reduções de repetições (-10% a -30%) não foram definidos entre si. A gama foi mais sensível às alterações no volume de repetições do que na amplitude EMG.

Conclusões: Estes hallazgos indicam que a proximidade ao outono modula as respostas periféricas e neuromusculares de forma dose-dependente, com limites de sensibilidade diferentes entre variáveis, fornecendo um guia prático para a prescrição do treino de resistência.

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Publicado

11-06-2026

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Artigos de caráter científico: trabalhos de pesquisas básicas e/ou aplicadas.

Como Citar

de Freitas Rodrigues, B., Matos dos Santos, M. D., Mendonça Pimenta, E., Túlio Lacerda, L., Bahia Lanza, M., Ferreira Pedrosa, G., Vitor Lima, F., Heleno Chagas, M., & Ribeiro Diniz, R. C. (2026). O que está perto da queda muscular? Inflamação muscular e respostas EMG ao treino de resistência em diferentes áreas da queda muscular. Retos, 81, 468-481. https://doi.org/10.47197/retos.v81.118964