Evaluation of shoulder muscular fatigue induced during VDT tasks

Atsuo Murata, Atsushi Uetake, Syuichiro Matsumoto, Yosuke Takasawa

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


This study was designed to evaluate localized muscular fatigue induced during visual display terminal (VDT) tasks. In the experimental paradigm used, electromyography (EMG) signals were not recorded during the VDT task but during isometric contractions in which the load imposed on the shoulder muscle was kept constant. The change in mean power frequency (MPF) and the root mean square values of EMG signals with time were explored. The correspondence between these measures and the psychological rating of localized muscular fatigue also were examined. The effectiveness of the experimental paradigm and of the measures used for evaluation of localized muscular fatigue are discussed. MPF measured during isometric contraction was found to be a sensitive measure of localized muscular fatigue.

Original languageEnglish
Pages (from-to)407-417
Number of pages11
JournalInternational Journal of Human-Computer Interaction
Issue number3
Publication statusPublished - Jan 1 2003
Externally publishedYes

ASJC Scopus subject areas

  • Human Factors and Ergonomics
  • Human-Computer Interaction
  • Computer Science Applications


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