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Surface EMG pattern analysis of the wrist muscles at different speeds of contraction

Surface EMG pattern analysis of the wrist muscles at different speeds of contraction
Surface EMG pattern analysis of the wrist muscles at different speeds of contraction
The aim of this study is to investigate the characteristics of surface electromyographic signals, particularly in pattern analysis. The data were collected from the wrist muscles (flexor carpi ulnaris and extensor carpi radialis) of 20 healthy participants. The study focuses on the movement of the wrist muscles at different frequencies. Participants were asked to contract their muscles at four different speeds (60, 90 and 120 cycles a minute and maximum speed) during wrist flexion and extension, co-contraction and isometric contraction. In this work, moving approximate entropy, mean absolute value and kurtosis are evaluated from the surface electromyographic signals at the four speeds. Moving approximate entropy and kurtosis analysis show that there are significant differences at three states of contraction; start, middle and end. It is shown that there are more regular data in a surface electromyographic signal at the beginning and end of a muscle contraction with low regularity during the middle part.
376-385
Ahmad, S. A.
9037e26c-6067-44ec-bfb7-4b7c3da0132b
Chappell, P. H.
2d2ec52b-e5d0-4c36-ac20-0a86589a880e
Ahmad, S. A.
9037e26c-6067-44ec-bfb7-4b7c3da0132b
Chappell, P. H.
2d2ec52b-e5d0-4c36-ac20-0a86589a880e

Ahmad, S. A. and Chappell, P. H. (2009) Surface EMG pattern analysis of the wrist muscles at different speeds of contraction. Journal of Medical Engineering & Technology, 33, 376-385.

Record type: Article

Abstract

The aim of this study is to investigate the characteristics of surface electromyographic signals, particularly in pattern analysis. The data were collected from the wrist muscles (flexor carpi ulnaris and extensor carpi radialis) of 20 healthy participants. The study focuses on the movement of the wrist muscles at different frequencies. Participants were asked to contract their muscles at four different speeds (60, 90 and 120 cycles a minute and maximum speed) during wrist flexion and extension, co-contraction and isometric contraction. In this work, moving approximate entropy, mean absolute value and kurtosis are evaluated from the surface electromyographic signals at the four speeds. Moving approximate entropy and kurtosis analysis show that there are significant differences at three states of contraction; start, middle and end. It is shown that there are more regular data in a surface electromyographic signal at the beginning and end of a muscle contraction with low regularity during the middle part.

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More information

Published date: 2009
Additional Information: Imported from ISI Web of Science
Organisations: EEE

Identifiers

Local EPrints ID: 270072
URI: https://eprints.soton.ac.uk/id/eprint/270072
PURE UUID: ef723ea5-6c5c-4c21-b7eb-73b7f2a723fb

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Date deposited: 21 Apr 2010 07:46
Last modified: 18 Jul 2017 06:51

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Contributors

Author: S. A. Ahmad
Author: P. H. Chappell

University divisions

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