Spectral analysis during fatigue. Surface and fine wire electrode comparison. Academic Article uri icon

Overview

abstract

  • Fine wire (FW) intramuscular electrodes and spectral analysis have not previously been used to quantify metabolic muscle fatigue in deep muscles not accessible with surface electrodes. This study compares initial median frequency (IMF) and decline in median frequency with fatigue (SLOPE) using surface and FW electrodes. Eighteen men performed isometric biceps contractions for 100 s. Electromyographic signals were collected using FW and surface electrodes. The recordings of SLOPE was greater with FW (-0.44 v -0.23 %IMF/s) and IMF was higher (195 v 69 Hz). Intrasession reliability for slope was better with FW electrode (intraclass correlation coefficient (ICC) = 0.74; P<0.0001) than with the surface electrode (ICC = 0.43; P = 0.006), but intersession reliability was best with the surface electrode (ICC = 0.50; P = 0.03). Spectral analysis using FW electrodes provides earlier detection of muscle fatigue and can be used in deep muscles, but the reliability must be improved before clinical application.

publication date

  • January 1, 1996

Research

keywords

  • Electromyography
  • Muscle Fatigue

Identity

Scopus Document Identifier

  • 0029925822

Digital Object Identifier (DOI)

  • 10.1097/00002060-199601000-00005

PubMed ID

  • 8645432

Additional Document Info

volume

  • 75

issue

  • 1