A method for positioning electrodes during surface EMG recordings in lower limb muscles

Rainoldi, Alberto; Melchiorri, G; Caruso, I.

doi:10.1016/j.jneumeth.2003.10.014

Cited by 483 publications

(436 citation statements)

References 28 publications

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“…Gastrocnemius medialis muscle 50.3±5.7% distance from the medial side of the popliteus cavity to the medial side of the Achilles tendon insertion, starting from the Achilles tendon (20).…”

Section: Paravertebral Musclesmentioning

confidence: 99%

Reliability of EMG activity in complete denture users during simulation of activities of daily living

Baldisserotto¹,

Trindade²,

Loss³

et al. 2010

Rev. odonto ciênc. (Online)

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Purpose: To describe a kinesiologic EMG method and determine the reliability of EMG activity of representative muscles of mastication (temporal, masseter), posture of neck (sternocleidomastoid, trapezius) and trunk (rectus abdominis, paravertebral), and lower extremity strength (rectus femoris, medial gastrocnemius) during simulation of activities of daily living.Methods: Ten edentulous healthy women (age: 58.2±5.6 yr old) were tested with and without their dentures. EMG signals were recorded for each subject during three trials of each kinesiologic test: to stand up/sit down on a chair (TC), to rise/lie down in the bed (TB), and to lift/lower bags (TW). The same-day reprodutibility of the EMG values was estimated by test-retest reliability analyses. For each test (TC, TB, and TW) the intraclass correlation coefficient (ICC) and 95% confidence interval were estimated stratified by muscle, presence or not of complete dentures, and movement during the test (up and down) considering the three repetitions per subject to assess consistency.Results: All muscles showed activation during the tests. The method yielded moderate to high ICCs; the highest test-retest reliability levels were estimated for the sternocleidomastoid (0.82-0.97) and paravertebral (0.86-0.99) muscles.Conclusion: These findings suggest that the described kinesiologic EMG method showed satisfactory reliability in this sample.Key words: Electromyography; complete dentures; activities of daily living ResumoObjetivo: Descrever uma metodologia de EMG cinesiológica e determinar a reprodutibilidade da atividade eletromiográfica dos músculos mastigatórios (m. temporal e m. masseter), posturais do pescoço (mm. esternocleidomastoideo e trapézio), posturais do tronco (mm. reto abdominal e paravertebrais) e de força das extremidades inferiores (mm. reto femoral e gastrocnemius medial) durante simulação de atividades de vida diária (AVDs).Metodologia: A amostra foi constituída por dez mulheres saudáveis, usuárias de prótese total bimaxilar, com idade média de 58,2 anos. Foram realizados três testes AVDs: levantar/ sentar da cadeira (TCAD), levantar/deitar na cama (TCAM) e pegar/largar sacolas (TSAC). A reprodutibilidade dos valores EMG foi analisada por teste-reteste. Para cada teste AVD foram estimados coeficiente de correlação intraclasse (CCIC) e intervalo de confiança de 95% com estratificação por músculo, condição com e sem prótese (suporte oclusal) e movimento durante o teste, considerando três repetições por sujeito para avaliar consistência.

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“…Gastrocnemius medialis muscle 50.3±5.7% distance from the medial side of the popliteus cavity to the medial side of the Achilles tendon insertion, starting from the Achilles tendon (20).…”

Section: Paravertebral Musclesmentioning

confidence: 99%

Reliability of EMG activity in complete denture users during simulation of activities of daily living

Baldisserotto¹,

Trindade²,

Loss³

et al. 2010

Rev. odonto ciênc. (Online)

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“…Variability of the EMG record of muscle activity and methods of assessment are used for various purposes in ergonomics, biomechanics, kinematics, sports training, rehabilitation or investigation into the kinesiology behaviour etc. (Rainoldi et al, 2004;Konrad, 2005).…”

Section: Introductionmentioning

confidence: 99%

Muscle activation of a sportsman and an untrained man

Korvas

Kotova

Horáková

2016

jhse

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The research was focused to analyse the muscle activation using sEMG during repeated physical activity. The purpose of this study was to find out differences between a sportsman and an untrained man in the timing of muscle activation during increasing load. Two men took part in the research. The untrained man (MN) 20 years old, 180 cm, 74 kg, sportsman (MS) 22 years old, 177 cm, 87 kg. Participants performed repeated flexion and extension in the elbow joint. Muscle activation has been tested using sEMG on the selected muscles: biceps brachii (BB), brachioradialis (B), trapezius p. descendez (TD), deltoideus p. acromialis (DA). Both participants performed test for 5, 8 and 12 kg load. Number of repetition was 10. In flexion, the time of muscle activations were the same or very similar for BB for both participants and longer in MN for B and DA, for TD were longer in MS for all loads. Differences were caused firstly by a different finishing time. In extension DA and B in MN, partly also TD were activated for a longer time. The time for activation of BB was mostly the same. Differences were caused mainly by the later start of the activation in MS. Also tendencies in prolonging and shortening the time of activation in relation to increasing load in both participants demonstrated different characteristics. Significantly longer time of muscle activation of MN has been proved only for B and DA for both kinds of movements. Differences between participants in the total time of activation at absolutely same load were expected especially because of the better movement efficiency, adaptation to the power load and movement technique in MS.

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“…Posteriormente, a composição corporal foi estimada por meio da fórmula de Siri apud Heyward e Stolarczyk (10) . (27) . A distância entre o centro dos eletrodos foi mantida em 30 mm.…”

Section: Introductionunclassified

Respostas eletromiográficas induzidas pelo isolamento e pela imersão sobre os eletrodos de superfície

Alberton

Silva

Cadore

et al. 2008

RPCD

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Rio Grande do Sul BrasilRESUMO O objetivo do presente estudo foi verificar alterações no sinal eletromiográfico (EMG) durante contrações isométricas realizadas nos meios aquático e terrestre. Oito mulheres (23 ± 1 anos) realizaram contrações isométricas voluntárias máximas em um dinamômetro isocinético para o registro do pico do torque dos extensores do joelho e do sinal EMG do músculo vasto lateral (flexão do joelho em 90°) com e sem isolamento sobre os eletrodos de superfície. Em seguida, outra contração voluntária máxima foi realizada contra resistência fixa nos meios terrestre e aquático. Para a análise estatística utilizou-se o Teste T pareado, com α=0,05 (SPSS versão 11.0). Nenhuma diferença significativa foi encontrada entre os valores rmsEMG para o vasto lateral nas situações com (0,560 ± 0,118 mV) e sem (0,538 ± 0,110 mV) isolamento (p=0,306), para valores de pico de torque similares (p=0,191). Os mesmos resultados foram encontrados comparando os meios terrestre (0,428 ± 0,054 mV) e aquático (0,388 ± 0,105 mV) (p=0,446). O uso de adesivos resistentes à água não alterou o sinal EMG. Além disso, não houve diferenças nos valores rmsEMG durante a contração voluntária máxima realizada nos meios aquático e terrestre, sugerindo que o meio não influenciou a amplitude do rmsEMG.Palavras-chave: electromiografia, imersão, isolamento. with α=0.05 (SPSS vs 11.0). No significant difference was found between vastus lateralis rmsEMG values for situations with (0.560 ± 0.118 mV) and without (0.538 ± 0.110 mV) isolation (p=0.306) ABSTRACT Electromiographic responses induced by superficial electrodes isolation and by immersion The objective of the present study was to verify the electromiographic (EMG) signal alterations during isometric actions performed in water and on land. Firstly, 8 women (23 ± 1 yrs) performed maximal voluntary isometric actions in a isokinetic dynamometer to record the peak torque for knee extensors and the EMG signal of the vastus lateralis muscle (90° knee flexion) with and without superficial electrodes isolation. Subsequently, another maximal isometric action was performed against fixed resistance on land and in water immersion. For statistical analysis a paired

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A method for positioning electrodes during surface EMG recordings in lower limb muscles

Cited by 483 publications

References 28 publications

Reliability of EMG activity in complete denture users during simulation of activities of daily living

Reliability of EMG activity in complete denture users during simulation of activities of daily living

Muscle activation of a sportsman and an untrained man

Respostas eletromiográficas induzidas pelo isolamento e pela imersão sobre os eletrodos de superfície

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