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Erector spinae muscle responses while standing

N Ertekin, C Ertekin

    Journal of Neurology, Neurosurgery, and Psychiatry
    |January 1, 1981
    PubMed
    Summary
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    Stable EMG responses were recorded from back muscles in adults. These responses occurred during arm and leg movements triggered by electrical nerve stimulation, showing muscle activation pathways.

    Area of Science:

    • Neuroscience
    • Human Physiology
    • Biomedical Engineering

    Background:

    • Electromyography (EMG) is crucial for studying muscle activity.
    • Understanding spinal reflex pathways is important for diagnosing neurological conditions.
    • Previous research has explored muscle responses to various stimuli.

    Purpose of the Study:

    • To investigate the electromyographic (EMG) responses in the lumbar erector spinae muscles.
    • To determine if these muscles respond to electrical stimulation of the brachial plexus or tibial nerve.
    • To assess the stability and nature of these EMG responses in healthy adults.

    Main Methods:

    • EMG recordings were taken from the lumbar erector spinae muscles of 55 healthy adults in a standing position.
    • Electrical stimuli were applied to the brachial plexus at Erb's point to elicit arm abduction.

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  • Electrical stimuli were applied to the posterior tibial nerve in the popliteal fossa to elicit knee and ankle movement.

    • Main Results:

    • Stable and reliable EMG responses were consistently recorded from the lumbar erector spinae muscles.
    • These responses were observed in reaction to both upper limb (brachial plexus stimulation) and lower limb (tibial nerve stimulation) movements.
    • The findings indicate a measurable muscle activation in the lower back in response to stimuli affecting the limbs.

    Conclusions:

    • The lumbar erector spinae muscles exhibit stable EMG responses to stimuli that induce limb movements.
    • This suggests a potential neural connection or reflex pathway influencing the back muscles during limb actions.
    • These findings contribute to the understanding of sensorimotor integration and spinal cord function.