The Relationship Between Changes in Amplitude and Instantaneous Mean Frequency at Low and High Frequency Bands During Dynamic Contraction

Author

Soo, Yewguan ; Sugi, Masao ; Yokoi, Hiroshi ; Arai, Tamio ; Nakamura, Tatsuhiro ; Du, Rulin ; Ota, Jun

Author_Institution

Univ. of Tokyo, Tokyo

fYear

2008

Firstpage

1413

Lastpage

1416

Abstract

Surface Electromyography (SEMG) analysis of dynamic contraction is becoming more important to understand the muscle condition in real life activities. The objective of the study is to discover the relationship between the changes of amplitude and frequency at high and low frequency bands. Continuous Wavelet Transform (CWT) is utilized in order to process the SEMG data in both time and frequency domain. The result shows the potential to estimate the force level by analyzing the amplitude of high frequency band. However the influence of muscle fatigue and force variation should be identified during dynamic contraction. The proposed method provides an alternative solution for analyzing SEMG signals in different perspective.

Keywords

biomechanics; electromyography; fatigue; medical signal processing; wavelet transforms; SEMG; amplitude changes; continuous wavelet transform; dynamic contraction; force variation; instantaneous mean frequency changes; muscle condition; muscle fatigue; surface electromyography; Amplitude estimation; Continuous wavelet transforms; Electromyography; Fatigue; Frequency domain analysis; Frequency estimation; Muscles; Signal analysis; Wavelet domain; Wavelet transforms;

fLanguage

English

Publisher

ieee

Conference_Titel

Bioinformatics and Biomedical Engineering, 2008. ICBBE 2008. The 2nd International Conference on

Conference_Location

Shanghai

Print_ISBN

978-1-4244-1747-6

Electronic_ISBN

978-1-4244-1748-3

Type

conf

DOI

10.1109/ICBBE.2008.682

Filename

4535562