Análise das bandas de frequência do sinal eletromiográfico durante o treinamento de resistência com carga baixa e alta: ensaio clínico randomizado, cego

Detalhes bibliográficos
Autor(a) principal: Azevedo, Jônatas Bezerra de
Data de Publicação: 2021
Tipo de documento: Tese
Idioma: por
Título da fonte: Biblioteca Digital de Teses e Dissertações da Uninove
Texto Completo: http://bibliotecatede.uninove.br/handle/tede/2837
Resumo: Introduction: The use of the electromyographic signal frequency (EMG) has been used as an effective tool to explore the movement motor control strategy. Thus, the frequency band of the EMG signal can reveal relevant physiological information about muscle activity, as it is a measure that allows separating the frequency spectrum of the signal into different bands, that is, different values. Study objective 1: To verify the behavior of the BF of the EMG signal at different strength levels. Study objective 2: To verify the behavior of the frequency bands of the electromyographic signal during resistance training with low versus high load. Methods: This was a prospective randomized, blinded, study consisting of 16 healthy sedentary individuals aged between 20 and 40 years. Each participant obtained a different training protocol for each biceps brachii muscle (BB) defined by drawing lots, ie: training A: with 40% of the maximum load and training B with 70% of the maximum load. The primary outcome of the study was the different frequency bands of the electromyographic (EMG) signal after resistance training. Secondary outcomes were muscle strength and hypertrophy. The EMG signals from the biceps brachii muscle were collected during 4 different strength levels (20, 40, 60 and 80% of MVC [maximum voluntary contraction]) before and after a training program for hypertrophy. Fast Fourier Transform (FFT) defined with Hamming window (50% overlap), 1024 points was used to analyze the EMG signal. The signal power spectrum was divided into six bands: 5-13, 13-30, 30-60, 60-100, 100-200 Hz and 200-300Hz. Results Study 1: After comparing the power of the different LF, only the strength levels of 20% and 80% of the CVM were linked as frequency ranges between 5-13 Hz and 200 -300 Hz. Results Study 2: A multivariate analysis on the significant differences for the Training vs BF (F= 104.63; P < 0.0001; Eta = 0.41), Training vs Groups vs BF interactions (F= 3.34; P = 0.005; Eta= 0.02 ). Conclusions: Only strength levels of 20% and 80% of CVM influenced the frequency bands of 5-13 Hz and 200 -300 Hz. Resistance training with loads of 40 and 70% of 1RM of the BB muscle increased power in the frequency bands between 13-30 Hz while in the 60-100 Hz and 100-200 Hz bands the power decreased.
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spelling Politti, FabianoPolitti, FabianoGomes, Cid André Fidelis de PaulaBocalini, Danilo Saleshttp://lattes.cnpq.br/4962456456415117Azevedo, Jônatas Bezerra de2022-02-21T21:43:28Z2021-12-17Azevedo, Jônatas Bezerra de. Análise das bandas de frequência do sinal eletromiográfico durante o treinamento de resistência com carga baixa e alta: ensaio clínico randomizado, cego. 2021. 69 f. Tese( Programa de Pós-Graduação em Ciências da Reabilitação) - Universidade Nove de Julho, São Paulo.http://bibliotecatede.uninove.br/handle/tede/2837Introduction: The use of the electromyographic signal frequency (EMG) has been used as an effective tool to explore the movement motor control strategy. Thus, the frequency band of the EMG signal can reveal relevant physiological information about muscle activity, as it is a measure that allows separating the frequency spectrum of the signal into different bands, that is, different values. Study objective 1: To verify the behavior of the BF of the EMG signal at different strength levels. Study objective 2: To verify the behavior of the frequency bands of the electromyographic signal during resistance training with low versus high load. Methods: This was a prospective randomized, blinded, study consisting of 16 healthy sedentary individuals aged between 20 and 40 years. Each participant obtained a different training protocol for each biceps brachii muscle (BB) defined by drawing lots, ie: training A: with 40% of the maximum load and training B with 70% of the maximum load. The primary outcome of the study was the different frequency bands of the electromyographic (EMG) signal after resistance training. Secondary outcomes were muscle strength and hypertrophy. The EMG signals from the biceps brachii muscle were collected during 4 different strength levels (20, 40, 60 and 80% of MVC [maximum voluntary contraction]) before and after a training program for hypertrophy. Fast Fourier Transform (FFT) defined with Hamming window (50% overlap), 1024 points was used to analyze the EMG signal. The signal power spectrum was divided into six bands: 5-13, 13-30, 30-60, 60-100, 100-200 Hz and 200-300Hz. Results Study 1: After comparing the power of the different LF, only the strength levels of 20% and 80% of the CVM were linked as frequency ranges between 5-13 Hz and 200 -300 Hz. Results Study 2: A multivariate analysis on the significant differences for the Training vs BF (F= 104.63; P < 0.0001; Eta = 0.41), Training vs Groups vs BF interactions (F= 3.34; P = 0.005; Eta= 0.02 ). Conclusions: Only strength levels of 20% and 80% of CVM influenced the frequency bands of 5-13 Hz and 200 -300 Hz. Resistance training with loads of 40 and 70% of 1RM of the BB muscle increased power in the frequency bands between 13-30 Hz while in the 60-100 Hz and 100-200 Hz bands the power decreased.Introdução: O uso da frequência do sinal eletromiográfico (EMG) tem sido usada como uma ferramenta eficaz para explorar a estratégia de controle motor do movimento. Dessa forma, a banda de freqüência do sinal EMG pode revelar informações fisiológicas relevantes sobre a atividade muscular por ser uma medida que permite separar o espectro da frequência do sinal em diversas bandas, ou seja, diversos valores. Objetivo estudo 1: Verificar o comportamento da BF do sinal EMG em diferentes níveis de força. Objetivo estudo 2: Verificar o comportamento das bandas de frequência do sinal eletromiográfico durante o treinamento de resistência com carga baixa versus alta. Métodos: Esse foi um estudo prospectivo randomizado, cego, constituído por 16 indivíduos saudáveis sedentários com idade entre 20 e 40 anos. Cada participante realizou um protocolo de treino diferente para cada músculo bíceps braquial (BB) definidos previamente por sorteio ou seja: treino A: com 40% da carga máxima e treino B com 70% da carga máxima. O desfecho primário do estudo foram as diferentes bandas de frequência do sinal eletromiográfico (EMG) pós treinamento resistido. Os desfechos secundários foram força e hipertrofia muscular. Os sinais EMG do músculo bíceps braquial, foram coletados em 4 diferentes níveis de força (20, 40, 60 e 80 % da CVM [contração voluntária máxima]), pré e pós um programa de treinamento para hipertrofia. A Transformada Rápida de Fourier (FFT) calculada com janela Hamming (50% de sobreposição), 1024 pontos foi utilizada para analisar o sinal EMG. O espectro da potência do sinal foi divido em seis faixas de bandas sendo: 5-13, 13-30, 30-60, 60-100, 100-200 Hz e 200-300Hz. Resultados estudo 1: após comparação da potência das diferente BF, somente os níveis de força de 20% e 80% da CVM influenciaram as faixas de frequência compreendidas entre de 5-13 Hz e 200 -300 Hz. Resultados Estudo 2: A análise multivariada demonstrou diferenças significativas para as interações Treinamento vs BF (F=104.63; P<0.0001; Eta=0.41), Teinamento vs Grupos vs BF (F=3.34; P=0.005; Eta=0.02). Conclusões: Somente os níveis de força de 20% e 80% da CVM influenciaram as bandas de frequência de 5-13 Hz e 200 - 300 Hz. O treinamento resistido com cargas de 40 e 70 % de 1RM do músculo BB, aumentam a potência das bandas de frequência entre 13-30 Hz enquanto que nas bandas de 60-100 Hz e 100-200 Hz a potência diminuiu.Submitted by Nadir Basilio (nadirsb@uninove.br) on 2022-02-21T21:43:28Z No. of bitstreams: 1 Jônatas Bezerra de Azevedo.pdf: 1408997 bytes, checksum: ef96cbb0398d00f529f21e3aaf5f8568 (MD5)Made available in DSpace on 2022-02-21T21:43:28Z (GMT). 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dc.title.por.fl_str_mv Análise das bandas de frequência do sinal eletromiográfico durante o treinamento de resistência com carga baixa e alta: ensaio clínico randomizado, cego
dc.title.alternative.eng.fl_str_mv Frequency bands analysis of the electromyographic signal after resistance training with low and high load: randomized, blinded clinical trial
title Análise das bandas de frequência do sinal eletromiográfico durante o treinamento de resistência com carga baixa e alta: ensaio clínico randomizado, cego
spellingShingle Análise das bandas de frequência do sinal eletromiográfico durante o treinamento de resistência com carga baixa e alta: ensaio clínico randomizado, cego
Azevedo, Jônatas Bezerra de
eletromiografia
banda de frequência
músculo bíceps braquial
treinamento
hipertrofia
electromyography
frequency band
biceps brachii muscle
training
hypertrophy
CIENCIAS DA SAUDE
title_short Análise das bandas de frequência do sinal eletromiográfico durante o treinamento de resistência com carga baixa e alta: ensaio clínico randomizado, cego
title_full Análise das bandas de frequência do sinal eletromiográfico durante o treinamento de resistência com carga baixa e alta: ensaio clínico randomizado, cego
title_fullStr Análise das bandas de frequência do sinal eletromiográfico durante o treinamento de resistência com carga baixa e alta: ensaio clínico randomizado, cego
title_full_unstemmed Análise das bandas de frequência do sinal eletromiográfico durante o treinamento de resistência com carga baixa e alta: ensaio clínico randomizado, cego
title_sort Análise das bandas de frequência do sinal eletromiográfico durante o treinamento de resistência com carga baixa e alta: ensaio clínico randomizado, cego
author Azevedo, Jônatas Bezerra de
author_facet Azevedo, Jônatas Bezerra de
author_role author
dc.contributor.advisor1.fl_str_mv Politti, Fabiano
dc.contributor.referee1.fl_str_mv Politti, Fabiano
dc.contributor.referee2.fl_str_mv Gomes, Cid André Fidelis de Paula
dc.contributor.referee3.fl_str_mv Bocalini, Danilo Sales
dc.contributor.authorLattes.fl_str_mv http://lattes.cnpq.br/4962456456415117
dc.contributor.author.fl_str_mv Azevedo, Jônatas Bezerra de
contributor_str_mv Politti, Fabiano
Politti, Fabiano
Gomes, Cid André Fidelis de Paula
Bocalini, Danilo Sales
dc.subject.por.fl_str_mv eletromiografia
banda de frequência
músculo bíceps braquial
treinamento
hipertrofia
topic eletromiografia
banda de frequência
músculo bíceps braquial
treinamento
hipertrofia
electromyography
frequency band
biceps brachii muscle
training
hypertrophy
CIENCIAS DA SAUDE
dc.subject.eng.fl_str_mv electromyography
frequency band
biceps brachii muscle
training
hypertrophy
dc.subject.cnpq.fl_str_mv CIENCIAS DA SAUDE
description Introduction: The use of the electromyographic signal frequency (EMG) has been used as an effective tool to explore the movement motor control strategy. Thus, the frequency band of the EMG signal can reveal relevant physiological information about muscle activity, as it is a measure that allows separating the frequency spectrum of the signal into different bands, that is, different values. Study objective 1: To verify the behavior of the BF of the EMG signal at different strength levels. Study objective 2: To verify the behavior of the frequency bands of the electromyographic signal during resistance training with low versus high load. Methods: This was a prospective randomized, blinded, study consisting of 16 healthy sedentary individuals aged between 20 and 40 years. Each participant obtained a different training protocol for each biceps brachii muscle (BB) defined by drawing lots, ie: training A: with 40% of the maximum load and training B with 70% of the maximum load. The primary outcome of the study was the different frequency bands of the electromyographic (EMG) signal after resistance training. Secondary outcomes were muscle strength and hypertrophy. The EMG signals from the biceps brachii muscle were collected during 4 different strength levels (20, 40, 60 and 80% of MVC [maximum voluntary contraction]) before and after a training program for hypertrophy. Fast Fourier Transform (FFT) defined with Hamming window (50% overlap), 1024 points was used to analyze the EMG signal. The signal power spectrum was divided into six bands: 5-13, 13-30, 30-60, 60-100, 100-200 Hz and 200-300Hz. Results Study 1: After comparing the power of the different LF, only the strength levels of 20% and 80% of the CVM were linked as frequency ranges between 5-13 Hz and 200 -300 Hz. Results Study 2: A multivariate analysis on the significant differences for the Training vs BF (F= 104.63; P < 0.0001; Eta = 0.41), Training vs Groups vs BF interactions (F= 3.34; P = 0.005; Eta= 0.02 ). Conclusions: Only strength levels of 20% and 80% of CVM influenced the frequency bands of 5-13 Hz and 200 -300 Hz. Resistance training with loads of 40 and 70% of 1RM of the BB muscle increased power in the frequency bands between 13-30 Hz while in the 60-100 Hz and 100-200 Hz bands the power decreased.
publishDate 2021
dc.date.issued.fl_str_mv 2021-12-17
dc.date.accessioned.fl_str_mv 2022-02-21T21:43:28Z
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dc.identifier.citation.fl_str_mv Azevedo, Jônatas Bezerra de. Análise das bandas de frequência do sinal eletromiográfico durante o treinamento de resistência com carga baixa e alta: ensaio clínico randomizado, cego. 2021. 69 f. Tese( Programa de Pós-Graduação em Ciências da Reabilitação) - Universidade Nove de Julho, São Paulo.
dc.identifier.uri.fl_str_mv http://bibliotecatede.uninove.br/handle/tede/2837
identifier_str_mv Azevedo, Jônatas Bezerra de. Análise das bandas de frequência do sinal eletromiográfico durante o treinamento de resistência com carga baixa e alta: ensaio clínico randomizado, cego. 2021. 69 f. Tese( Programa de Pós-Graduação em Ciências da Reabilitação) - Universidade Nove de Julho, São Paulo.
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