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One solution to reduce the risk of discomfort and pain due to prolonged standing at work is the use of exoskeletons. Previous work have shown that balance control is improved by the use of lower limb exoskeletons, but none has related the postural data from force platform to electromyography (EMG) to understand how muscle contractions behave due to the new stability conditions with the use of exoskeleton. In this work, six participants used a passive lower limb exoskeleton in two postural control tests: standing with their eyes open and closed. Our results showed that the smaller displacement and area of the center of pressure (COP) with the use of the exoskeleton is not linked to a lower values of the mean activation of the leg muscles or changes in their co-contraction, but rather to its variance, especially in the tibialis anterior muscle.

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Differences of Center of Pressure and Leg Muscle EMG Activity in Standing with an Passive Exoskeleton for Lower Limbs

  • 会议论文

  • 发表日期：

    2025年

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  • M. G. Nogueira,
  • A. Forner-Cordero

摘要

One solution to reduce the risk of discomfort and pain due to prolonged standing at work is the use of exoskeletons. Previous work have shown that balance control is improved by the use of lower limb exoskeletons, but none has related the postural data from force platform to electromyography (EMG) to understand how muscle contractions behave due to the new stability conditions with the use of exoskeleton. In this work, six participants used a passive lower limb exoskeleton in two postural control tests: standing with their eyes open and closed. Our results showed that the smaller displacement and area of the center of pressure (COP) with the use of the exoskeleton is not linked to a lower values of the mean activation of the leg muscles or changes in their co-contraction, but rather to its variance, especially in the tibialis anterior muscle.