Long-Term Electrode–Skin Impedance Variation for Electromyographic Measurements

Author:

Sousa Andreia1ORCID,Noites Andreia1ORCID,Vilarinho Rui12ORCID,Santos Rubim1ORCID

Affiliation:

1. Center for Rehabilitation Research (CIR), ESS, Polytechnic of Porto, rua Dr. António Bernardino de Almeida, 4200-072 Porto, Portugal

2. FP-I3ID, Escola Superior de Saúde-Fernando Pessoa, 4200-253 Porto, Portugal

Abstract

This study aims to observe the evolution of the electrode–skin interface impedance of surface EMG electrodes over the time taken to determine the time of stabilization. Eight healthy subjects participated in the study. Electrode–skin impedance was evaluated in the rectus abdominal muscle every five minutes, over a total period of 50 min. A reduction of 13.23% in the impedance values was observed in minute 10 (p = 0.007), and a reduction of 9.02% was observed in minute 15 (p = 0.029). No statistically significant differences were observed in the other instants evaluated. The findings obtained in the present study demonstrate a decrease in electrode–skin impedance from minute 5 to minute 15, followed by a stabilization period with a low percentage of variation till minute 50.

Funder

Fundação para a Ciência e Tecnologia

Publisher

MDPI AG

Subject

Electrical and Electronic Engineering,Biochemistry,Instrumentation,Atomic and Molecular Physics, and Optics,Analytical Chemistry

Reference28 articles.

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