A study of various normalization procedures for within day electromyographic data

Knutson, Loretta M.; Soderberg, Gary L; Ballantyne, Bryon T.; Clarke, William R.

doi:10.1016/1050-6411(94)90026-4

Cited by 221 publications

(222 citation statements)

References 22 publications

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“…Os descritores utilizados para este trabalho foram termos em inglês apenas, tais como Electromyography, EMG Normalization, Isometric MVC, Muscular Utilization Ratio, Inter-Individual variability. Para descrever a revisão crítica, 17 artigos científi-cos [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] , sendo dois contendo pacientes sintomá-ticos 8,19 , e dois, de revisão da literatura 4,10 , foram selecionados, conforme mostra a Tabela 1, para explanar o principal tema abordado: "normalização EMG". Os demais artigos referidos na bibliografia são complementares para redação crítica do assunto e entendimento da área.…”

Section: Métodosunclassified

Normalização EMG: considerações da literatura para avaliação da função muscular

Silva

2013

Cons. Saúde

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Introdução: Diferentes fatores intrínsecos e extrínsecos influenciam a medida de atividade elétrica muscular por meio da eletromiografia (EMG). Para minimizar este efeito, a normalização da EMG é recomendada. Entretanto, pouco se sabe sobre as vantagens e desvantagens de cada método de normalização para uso em diferentes pacientes (sintomáticos e assintomáticos). Objetivos: Revisar e discutir os principais métodos de normalização do sinal da EMG para avaliação da função motora em diferentes sujeitos. Métodos: Incluíram-se artigos publicados, desde 1984, constantes na base de dados Medline. Dezessete estudos, sendo dois com pacientes sintomáticos, e dois, de revisão, foram selecionados para revisão crítica. Conclusão: A escolha de uma técnica de normalização da EMG é com base na variabilidade entre e intra-indivíduos. Um método recomendado para reduzir a variabilidade biológica é aquele com base numa contração voluntária submáxima como referência no processo de normalização. Entretanto, este não considera a capacidade máxima muscular do indivíduo para execução de uma atividade motora.

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Section: Métodosunclassified

Normalização EMG: considerações da literatura para avaliação da função muscular

Silva

2013

Cons. Saúde

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“…Subsequently, the participant was instructed to complete a series of exercises to activate the upper fibers of the trapezius muscle. Arbitrary angle isometric maximal voluntary contraction (MVC), through shoulder elevation, was completed in three repetitions each lasting for 6 s [20][21][22][23]. The SEMG and the force were simultaneously registered.…”

Section: Methodsmentioning

confidence: 99%

Wireless Surface Electromyography and Skin Temperature Sensors for Biofeedback Treatment of Headache: Validation Study with Stationary Control Equipment (Preprint)

Stubberud¹,

Omland²,

Tronvik³

et al. 2017

Preprint

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“…Some researchers reported better reliability by using the submaximal contraction method for EMG normalization 10,11) . However, several researchers have suggested that the MVIC method is the most reliable when compared with normalized EMG data relative to the peak or the mean amplitude of dynamic contraction 8,12,13) .…”

Section: Introductionmentioning

confidence: 99%

“…EMG normalization is commonly used to improve reliability by decreasing variation within and between individuals in EMG studies 4,5) . Maximal voluntary isometric contraction (MVIC) is the most common method of EMG normalization [6][7][8] , and is used as the standard value when comparing different subjects, days, studies, and muscles 9) . Some researchers reported better reliability by using the submaximal contraction method for EMG normalization 10,11) .…”

Section: Introductionmentioning

confidence: 99%

Concurrent Validity by Comparing EMG Activity between Manual Muscle Testing, Handheld Dynamometer, and Stationary Dynamometer in Testing of Maximal Isometric Quadriceps Contraction

et al. 2012

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Abstract.[Purpose] The purpose of this study was to establish the concurrent validity of electromyography (EMG) activity and muscle strength scores obtained by manual muscle testing (MMT), handheld dynamometer (HHD), and the gold standard stationary dynamometer (SD).[Subjects] Forty healthy young adults (17 men, 23 women) volunteered to participate in this study.[Methods] Subjects performed maximal voluntary isometric contraction (MVIC) of the quadriceps for 5 seconds in three successive trials. Surface EMG was used for recording the muscle activity during the maximal MMT, HHD, and SD measurements.[Results] The mean and peak EMG amplitudes (ICC 3,k = 0.968 to 0.980) of the three MVIC methods and muscle strength scores (Pearson r = 0.868) measured by HHD and SD showed good concurrent validity. The intra-trial reliability of mean EMG activity was also good (ICC 3,1 = 0.960 to 0.989), reflecting consistent measurement between trials.[Conclusion] Our EMG results imply that MMT and HHD are useful and simple methods of measuring MVIC for EMG normalization. Considering cost, time, and clinical utility, we suggest that the use of HHD to measure MVIC for EMG normalization is highly valuable and should generate more meaningful information associated with pathological conditions or interventions for all patients.

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A study of various normalization procedures for within day electromyographic data

Cited by 221 publications

References 22 publications

Normalização EMG: considerações da literatura para avaliação da função muscular

Normalização EMG: considerações da literatura para avaliação da função muscular

Wireless Surface Electromyography and Skin Temperature Sensors for Biofeedback Treatment of Headache: Validation Study with Stationary Control Equipment (Preprint)

Concurrent Validity by Comparing EMG Activity between Manual Muscle Testing, Handheld Dynamometer, and Stationary Dynamometer in Testing of Maximal Isometric Quadriceps Contraction

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