Evaluating the effect of electrode location on surface EMG amplitude of the m. erector spinae p. longissimus dorsi

R. de Nooij, L.A.C. Kallenberg, Hermanus J. Hermens

    Research output: Contribution to journalArticleAcademicpeer-review

    13 Citations (Scopus)

    Abstract

    Variations in surface electromyography (SEMG) amplitude have been shown to be dependent on the dislocation of recording electrodes. Yet no literature is available about the effect of electrode dislocation on SEMG amplitude of the lower back muscles. In this project, the aim was to determine this effect by investigating changes in the SEMG root mean square (RMS), induced by a well-defined dislocation of the recording electrodes. Bipolar SEMG of the longissimus dorsi (LD) muscles was measured in 16 healthy subjects undertaking five functional tasks (standing, forward flexion, re-extension, unsupported sitting and arm/leg lifting), and for eight of those subjects the experiment was repeated within two weeks. Intra-class correlation coefficients (ICCs) were used to show the reliability of the RMS in relation to electrode dislocation, the repeatability of the tasks, and the test–retest reliability. Results showed that: (1) lateral dislocation causes a significant decrease (18%, p < 0.001) in RMS; (2) longitudinal dislocation does not change the RMS; and (3) the variability caused by electrode dislocation is comparable to the variability caused by repetitions of tasks or by electrode repositioning. Our conclusion is that positioning in the mediolateral direction should be exact to minimize changes in SEMG amplitude due to dislocation. However, precise longitudinal electrode positioning seems to be less critical in experimental setups which measure the SEMG of the lower back muscles.
    Original languageUndefined
    Article number10.1016/j.jelekin.2008.03.013
    Pages (from-to)e257-e266
    Number of pages10
    JournalJournal of electromyography and kinesiology
    Volume19
    Issue number4
    DOIs
    Publication statusPublished - 21 Aug 2009

    Keywords

    • BSS-Biomechatronics and rehabilitation technology
    • EWI-14987
    • IR-67694
    • METIS-265191

    Cite this

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    title = "Evaluating the effect of electrode location on surface EMG amplitude of the m. erector spinae p. longissimus dorsi",
    abstract = "Variations in surface electromyography (SEMG) amplitude have been shown to be dependent on the dislocation of recording electrodes. Yet no literature is available about the effect of electrode dislocation on SEMG amplitude of the lower back muscles. In this project, the aim was to determine this effect by investigating changes in the SEMG root mean square (RMS), induced by a well-defined dislocation of the recording electrodes. Bipolar SEMG of the longissimus dorsi (LD) muscles was measured in 16 healthy subjects undertaking five functional tasks (standing, forward flexion, re-extension, unsupported sitting and arm/leg lifting), and for eight of those subjects the experiment was repeated within two weeks. Intra-class correlation coefficients (ICCs) were used to show the reliability of the RMS in relation to electrode dislocation, the repeatability of the tasks, and the test–retest reliability. Results showed that: (1) lateral dislocation causes a significant decrease (18{\%}, p < 0.001) in RMS; (2) longitudinal dislocation does not change the RMS; and (3) the variability caused by electrode dislocation is comparable to the variability caused by repetitions of tasks or by electrode repositioning. Our conclusion is that positioning in the mediolateral direction should be exact to minimize changes in SEMG amplitude due to dislocation. However, precise longitudinal electrode positioning seems to be less critical in experimental setups which measure the SEMG of the lower back muscles.",
    keywords = "BSS-Biomechatronics and rehabilitation technology, EWI-14987, IR-67694, METIS-265191",
    author = "{de Nooij}, R. and L.A.C. Kallenberg and Hermens, {Hermanus J.}",
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    Evaluating the effect of electrode location on surface EMG amplitude of the m. erector spinae p. longissimus dorsi. / de Nooij, R.; Kallenberg, L.A.C.; Hermens, Hermanus J.

    In: Journal of electromyography and kinesiology, Vol. 19, No. 4, 10.1016/j.jelekin.2008.03.013, 21.08.2009, p. e257-e266.

    Research output: Contribution to journalArticleAcademicpeer-review

    TY - JOUR

    T1 - Evaluating the effect of electrode location on surface EMG amplitude of the m. erector spinae p. longissimus dorsi

    AU - de Nooij, R.

    AU - Kallenberg, L.A.C.

    AU - Hermens, Hermanus J.

    N1 - 10.1016/j.jelekin.2008.03.013

    PY - 2009/8/21

    Y1 - 2009/8/21

    N2 - Variations in surface electromyography (SEMG) amplitude have been shown to be dependent on the dislocation of recording electrodes. Yet no literature is available about the effect of electrode dislocation on SEMG amplitude of the lower back muscles. In this project, the aim was to determine this effect by investigating changes in the SEMG root mean square (RMS), induced by a well-defined dislocation of the recording electrodes. Bipolar SEMG of the longissimus dorsi (LD) muscles was measured in 16 healthy subjects undertaking five functional tasks (standing, forward flexion, re-extension, unsupported sitting and arm/leg lifting), and for eight of those subjects the experiment was repeated within two weeks. Intra-class correlation coefficients (ICCs) were used to show the reliability of the RMS in relation to electrode dislocation, the repeatability of the tasks, and the test–retest reliability. Results showed that: (1) lateral dislocation causes a significant decrease (18%, p < 0.001) in RMS; (2) longitudinal dislocation does not change the RMS; and (3) the variability caused by electrode dislocation is comparable to the variability caused by repetitions of tasks or by electrode repositioning. Our conclusion is that positioning in the mediolateral direction should be exact to minimize changes in SEMG amplitude due to dislocation. However, precise longitudinal electrode positioning seems to be less critical in experimental setups which measure the SEMG of the lower back muscles.

    AB - Variations in surface electromyography (SEMG) amplitude have been shown to be dependent on the dislocation of recording electrodes. Yet no literature is available about the effect of electrode dislocation on SEMG amplitude of the lower back muscles. In this project, the aim was to determine this effect by investigating changes in the SEMG root mean square (RMS), induced by a well-defined dislocation of the recording electrodes. Bipolar SEMG of the longissimus dorsi (LD) muscles was measured in 16 healthy subjects undertaking five functional tasks (standing, forward flexion, re-extension, unsupported sitting and arm/leg lifting), and for eight of those subjects the experiment was repeated within two weeks. Intra-class correlation coefficients (ICCs) were used to show the reliability of the RMS in relation to electrode dislocation, the repeatability of the tasks, and the test–retest reliability. Results showed that: (1) lateral dislocation causes a significant decrease (18%, p < 0.001) in RMS; (2) longitudinal dislocation does not change the RMS; and (3) the variability caused by electrode dislocation is comparable to the variability caused by repetitions of tasks or by electrode repositioning. Our conclusion is that positioning in the mediolateral direction should be exact to minimize changes in SEMG amplitude due to dislocation. However, precise longitudinal electrode positioning seems to be less critical in experimental setups which measure the SEMG of the lower back muscles.

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    KW - EWI-14987

    KW - IR-67694

    KW - METIS-265191

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    DO - 10.1016/j.jelekin.2008.03.013

    M3 - Article

    VL - 19

    SP - e257-e266

    JO - Journal of electromyography and kinesiology

    JF - Journal of electromyography and kinesiology

    SN - 1050-6411

    IS - 4

    M1 - 10.1016/j.jelekin.2008.03.013

    ER -