Neuromuscular fatigue thresholds of the vastus lateralis, vastus medialis and rectus femoris muscles

T. J. Housh, H. A. DeVries, G. O. Johnson, S. A. Evans, D. J. Housh, J. R. Stout, R. M. Bradway, T. K. Evetovich

Research output: Contribution to journalArticle

33 Scopus citations

Abstract

The purpose of this study was to compare the power outputs associated with the onset of neuromuscular fatigue in the superficial muscles of the quadriceps femoris group by simultaneously monitoring the EMG activity from the vastus lateralis (VL), vastus medialis (VM) and rectus femoris (RF) muscles during a Physical Working Capacity at the Fatigue Threshold (PWCFT) test. Eleven adult males (X̄ ± SD = 24 ± 3y) served as subjects. There were no significant (p >0.05) differences among the mean PWCFT values for the VL (226 ± 58 W), VM (223 ± 58 W) and RF (203 ± 54 W) muscles. These findings indicates that the superficial muscles of the quadriceps femoris group generally responded as a unit with respect to the onset (threshold) of neuromuscular fatigue as measured by the PWCFT test.

Original languageEnglish (US)
Pages (from-to)247-256
Number of pages10
JournalElectromyography and Clinical Neurophysiology
Volume36
Issue number4
StatePublished - Jun 1 1996

Keywords

  • Electromyography
  • Muscle fatigue
  • Quadriceps femoris

ASJC Scopus subject areas

  • Physiology
  • Clinical Neurology
  • Physiology (medical)

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    Housh, T. J., DeVries, H. A., Johnson, G. O., Evans, S. A., Housh, D. J., Stout, J. R., Bradway, R. M., & Evetovich, T. K. (1996). Neuromuscular fatigue thresholds of the vastus lateralis, vastus medialis and rectus femoris muscles. Electromyography and Clinical Neurophysiology, 36(4), 247-256.