Task and intensity alters the rms proportionality ratio in the triceps surae

Nick BALL, Joanna Scurr

    Research output: Contribution to journalArticle

    3 Citations (Scopus)

    Abstract

    Introduction: Dynamic movements require synergistic involvement of numerous muscles, whereby different muscular and task demands could alter the ratio of this synergistic activation. Methods: Participants completed isometric, isotonic, isokinetic, and squat jump (SJ) tasks. Mean RMS EMG was collected from the medial and lateral gastrocnemius (MG, LG) and soleus (SOL), then pooled, and each muscle's activation was expressed as a percentage of the pooled activation. Results: The MG contributed 9-14% more to total muscle activation in isometric and isotonic tasks versus the SJ task. The SOL contributed 8% more to the SJ task compared with the isometric and isotonic tasks. Across all tasks, MG activation was 4.0% greater than SOL and 10.5% greater than LG. SOL activation was 6.5% greater in all tasks compared with LG. Conclusions: Task and intensity influences the ratio of activation in the triceps surae.
    Original languageEnglish
    Pages (from-to)890-898
    Number of pages9
    JournalMuscle and Nerve
    Volume51
    Issue number6
    DOIs
    Publication statusPublished - 2015

    Fingerprint

    Muscles
    9-(1'-hydroxy-2'-(hydroxymethyl)ethoxy)methylguanine

    Cite this

    @article{267a6d7c052940c2816f9c55c4782ae5,
    title = "Task and intensity alters the rms proportionality ratio in the triceps surae",
    abstract = "Introduction: Dynamic movements require synergistic involvement of numerous muscles, whereby different muscular and task demands could alter the ratio of this synergistic activation. Methods: Participants completed isometric, isotonic, isokinetic, and squat jump (SJ) tasks. Mean RMS EMG was collected from the medial and lateral gastrocnemius (MG, LG) and soleus (SOL), then pooled, and each muscle's activation was expressed as a percentage of the pooled activation. Results: The MG contributed 9-14{\%} more to total muscle activation in isometric and isotonic tasks versus the SJ task. The SOL contributed 8{\%} more to the SJ task compared with the isometric and isotonic tasks. Across all tasks, MG activation was 4.0{\%} greater than SOL and 10.5{\%} greater than LG. SOL activation was 6.5{\%} greater in all tasks compared with LG. Conclusions: Task and intensity influences the ratio of activation in the triceps surae.",
    keywords = "Electromyography, Gastrocnemius, Neuromuscular ratio, Soleus, Synergists, Triceps surae, triceps surae, neuromuscular ratio, electromyography, synergists, gastrocnemius, soleus",
    author = "Nick BALL and Joanna Scurr",
    year = "2015",
    doi = "10.1002/mus.24469",
    language = "English",
    volume = "51",
    pages = "890--898",
    journal = "Muscle and Nerve",
    issn = "0148-639X",
    publisher = "John Wiley & Sons",
    number = "6",

    }

    Task and intensity alters the rms proportionality ratio in the triceps surae. / BALL, Nick; Scurr, Joanna.

    In: Muscle and Nerve, Vol. 51, No. 6, 2015, p. 890-898.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - Task and intensity alters the rms proportionality ratio in the triceps surae

    AU - BALL, Nick

    AU - Scurr, Joanna

    PY - 2015

    Y1 - 2015

    N2 - Introduction: Dynamic movements require synergistic involvement of numerous muscles, whereby different muscular and task demands could alter the ratio of this synergistic activation. Methods: Participants completed isometric, isotonic, isokinetic, and squat jump (SJ) tasks. Mean RMS EMG was collected from the medial and lateral gastrocnemius (MG, LG) and soleus (SOL), then pooled, and each muscle's activation was expressed as a percentage of the pooled activation. Results: The MG contributed 9-14% more to total muscle activation in isometric and isotonic tasks versus the SJ task. The SOL contributed 8% more to the SJ task compared with the isometric and isotonic tasks. Across all tasks, MG activation was 4.0% greater than SOL and 10.5% greater than LG. SOL activation was 6.5% greater in all tasks compared with LG. Conclusions: Task and intensity influences the ratio of activation in the triceps surae.

    AB - Introduction: Dynamic movements require synergistic involvement of numerous muscles, whereby different muscular and task demands could alter the ratio of this synergistic activation. Methods: Participants completed isometric, isotonic, isokinetic, and squat jump (SJ) tasks. Mean RMS EMG was collected from the medial and lateral gastrocnemius (MG, LG) and soleus (SOL), then pooled, and each muscle's activation was expressed as a percentage of the pooled activation. Results: The MG contributed 9-14% more to total muscle activation in isometric and isotonic tasks versus the SJ task. The SOL contributed 8% more to the SJ task compared with the isometric and isotonic tasks. Across all tasks, MG activation was 4.0% greater than SOL and 10.5% greater than LG. SOL activation was 6.5% greater in all tasks compared with LG. Conclusions: Task and intensity influences the ratio of activation in the triceps surae.

    KW - Electromyography

    KW - Gastrocnemius

    KW - Neuromuscular ratio

    KW - Soleus

    KW - Synergists

    KW - Triceps surae

    KW - triceps surae

    KW - neuromuscular ratio

    KW - electromyography

    KW - synergists

    KW - gastrocnemius

    KW - soleus

    UR - http://www.scopus.com/inward/record.url?scp=84929517484&partnerID=8YFLogxK

    UR - http://www.mendeley.com/research/task-intensity-alters-rms-proportionality-ratio-triceps-surae

    U2 - 10.1002/mus.24469

    DO - 10.1002/mus.24469

    M3 - Article

    VL - 51

    SP - 890

    EP - 898

    JO - Muscle and Nerve

    JF - Muscle and Nerve

    SN - 0148-639X

    IS - 6

    ER -