Adaptações musculares e de força ao campo eletromagnético pulsado em mulheres jovens: um estudo piloto intraindividual

Autores

  • Pedro Augusto Inacio Evangelical University of Goiás, UNIEVANGELICA, Anápolis, Brazil https://orcid.org/0000-0001-9354-1460
  • Patrícia Sardinha Leonardo Centro Universitário Redentor (UniRedentor)
  • Marcelo Sales Graduate Program in Environment and Society at the State University of Goiás (UEG), Southwest Campus Headquarters – Quirinópolis, Quirinópolis, Goiás. GO https://orcid.org/0000-0003-3814-6964
  • Vicente Aprigliano Escuela de Ingeniería de Construcción y Transporte, Pontificia Universidad Católica de Valparaíso, Avda Brasil 2147, Valparaíso 2362804, Chile
  • Gaspar R. Chiappa Evangelical University of Goiás, UNIEVANGELICA, Anápolis, Brazil https://orcid.org/0000-0002-0440-8404
  • Rodolfo P. Vieira Evangelical University of Goiás, UNIEVANGELICA, Anápolis, Brazil https://orcid.org/0000-0001-6379-1143
  • Rodrigo Alvaro Lopes-Martins Centro Universitário Redentor (UniRedentor) https://orcid.org/0000-0002-4533-1335
  • Alberto Souza Sá Filho Universidade Evangélica de Goiás - UniEVANGÉLICA https://orcid.org/0000-0001-9434-4231

DOI:

https://doi.org/10.47197/retos.v72.116169

Palavras-chave:

Hipertrofia, Espessura Muscular, PEMF, Força, Treino de resistência

Resumo

Introdução: O campo eletromagnético pulsado (PEMF) é proposto como uma ferramenta não invasiva para promover adaptações musculares, como o aumento da força (1RM) e o aumento do crescimento muscular (TM). No entanto, os efeitos do PEMF nos músculos dos membros inferiores em jovens sem treino não foram completamente explorados.

Métodos: Investigar os efeitos de uma intervenção com PEMF durante a última semana de TM e 1RM do músculo reto femoral (RF) em cinco mulheres sedentárias. Cada participante recebe aleatoriamente um cais de PEMF e o contralateral, treinando a resistência tradicional numa máquina de extensão de cais (EXT). O protocolo de PEMF é constituído por 30 minutos (3 vezes por semana), a uma frequência de 50 Hz - 3,5 Tesla. O protocolo EXT inclui três séries de 8 a 12 repetições a ~70% de 1RM. O TM é medido em 30% e 50% do comprimento do RF do músculo através de ecografia, e a 1RM é avaliada bilateralmente. Registe a Password Percibid (RPE) após cada sessão.

Resultados: PEMF: a RFMT média aumentou de 1,88 ± 0,23 cm para 1,92 ± 0,19 cm com um comprimento de focinho de 30% e de 1,79 ± 0,19 cm para 1,84 ± 0,13 cm com um comprimento de focinho de 50%. EXT: a RFMT aumentou de 1,88 ± 0,14 cm para 2,01 ± 0,18 cm com um comprimento de 30% de pressão e de 1,70 ± 0,33 cm para 1,88 ± 0,27 cm com um comprimento de 50% de pressão. A 1WD aumentou de 36,0 ± 4,7 kg para 40,4 ± 5,7 kg com PEMF e de 36,0 ± 7,5 kg para 46,6 ± 9,1 kg com EXT. A EPR média da sessão é de 3,0 ± 0,9 com PEMF e de 8,0 ± 1,0 com EXT.

Discutir: Estas considerações preliminares reflectem o potencial da PEMF como alternativa básica e fornecem parâmetros essenciais para o desenho de um futuro teste definitivo.

Conclusão: Mesmo estas intervenções produzem melhor na 1WD, embora as alterações na TM sejam mais modestas e mais variáveis. As sessões de PEMF foram consistentemente bem toleradas e a EPR necessária foi mínima.

Biografia do Autor

  • Alberto Souza Sá Filho, Universidade Evangélica de Goiás - UniEVANGÉLICA

    Physical Education Professional graduated in 2006. Master Degree obtained in 2009 in the research line of Physical Activity and Aerobic Performance by Gama Filho University (CNPQ Scholarship - 131248 / 2009-0 - Capes 5 Concept). Master in Physical Activity Science with emphasis on the biodynamics of the exercise completed in 2017. PhD in Mental Health from the Federal University of Rio de Janeiro (Concept Capes 5), where he was a Fellow of CAPES developing projects in the line of research on the influence of aerobic interval exercise in affective responses, mood, as well as acute changes in autonomic function in patients with bipolar and healthy disorders. He is currently a researcher at the Graduate Program of the Evangelical University of Goiás (UniEvangelica). Teaching theoretical and practical classes throughout Brazil.

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Publicado

09/03/2025

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Secção

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

Como Citar

Inacio, P. A., Sardinha Leonardo, P., Sales, M., Aprigliano, V., Chiappa, G. R., Vieira, R. P., Lopes-Martins, R. A., & Sá Filho, A. S. (2025). Adaptações musculares e de força ao campo eletromagnético pulsado em mulheres jovens: um estudo piloto intraindividual. Retos, 72, 267-280. https://doi.org/10.47197/retos.v72.116169