The influence of confounding factors on the relationship between muscle contraction level and MF and MPF values of EMG signal: a review. Issue 1 (2nd January 2016)

• Record Type: Journal Article
• Authors: Roman-Liu, Danuta
• Is Part Of: International journal of occupational safety and ergonomics. Volume 22:Issue 1(2016)
• Page Start: 77
• Page End: 91
• Publication Date: 2016-01-02
• Subjects: median frequency -- mean power frequency -- power spectrum -- muscle contraction -- muscle length -- electrodes -- age and gender groups; Human engineering -- Periodicals; Industrial safety -- Periodicals; Human Engineering -- Periodicals; Occupational Health -- Periodicals; Ergonomie -- Périodiques; Sécurité du travail -- Périodiques; Human engineering; Industrial safety; Periodicals; 620.8
• DOI: 10.1080/10803548.2015.1116817
• Languages: English
• ISSNs: 1080-3548

Abstract

Abstract : The purpose of this article is to gather results of studies on the relationship between median frequency (MF) and mean power frequency (MPF) and the level of muscle contraction, and to use those results to discuss the differences in the trends according to factors related to measurement technique and subject. Twenty-one studies with 63 cases for upper limb muscles and nine studies with 31 cases for lower limb muscles were analysed. Most results showed an increase in parameters with an increased level of muscle contraction, only some studies showed a decrease. The influence on parameters of the level of muscle contraction and factors such as subjects, type of contraction, muscle length and electrodes was analysed for each muscle. It was concluded that when analysing the influence of different factors on MF and MPF, because those factors interact they should be considered together, not separately.