Measuring Surface Electromyography with Textile Electrodes in a Smart Leg Sleeve

Area of Science:

• Biomedical Engineering
• Wearable Technology
• Signal Processing

Background:

• Surface Electromyography (sEMG) is crucial for assessing lower limb muscle activity.
• Traditional sEMG monitoring often uses cumbersome Ag/AgCl electrodes.
• There is a need for comfortable, non-invasive, and wearable sEMG solutions.

Purpose of the Study:

• To design, develop, and validate a novel e-textile leg sleeve for non-invasive sEMG monitoring.
• To assess the performance of the e-textile sleeve against conventional sEMG measurement methods.
• To evaluate the wearability and comfort of the developed e-textile device.

Main Methods:

• Development of an e-textile leg sleeve with integrated sensors for sEMG acquisition.
• Comparative validation study involving eleven healthy volunteers.
• Comparison of sEMG signals from the anterior tibialis and lateral gastrocnemius muscles using e-textile and Ag/AgCl electrodes.
• Statistical analysis including paired t-tests and Bland-Altman analysis.
• Wearability and comfort assessment using the Comfort Rating Scale (CRS).

Main Results:

• The e-textile leg sleeve demonstrated strong agreement with traditional Ag/AgCl electrodes in sEMG signal metrics (area, power, mean, RMS).
• Statistical analyses (t-test, Bland-Altman) showed no significant differences or negligible bias between the two measurement methods.
• The e-textile sleeve achieved high scores on the Comfort Rating Scale, indicating excellent wearability and comfort.

Conclusions:

• The novel e-textile leg sleeve provides a valid and reliable method for non-invasive sEMG monitoring of lower limb muscles.
• The device's high comfort and wearability make it a promising alternative for clinical applications and everyday patient care.
• This technology facilitates long-term, unobtrusive muscle activity assessment.