Surface EMG pattern analysis of the wrist muscles at different speeds of contraction.
J Med Eng Technol
; 33(5): 376-85, 2009.
Article
en En
| MEDLINE
| ID: mdl-19440916
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.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Muñeca
/
Procesamiento de Señales Asistido por Computador
/
Músculo Esquelético
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Electromiografía
/
Contracción Muscular
Tipo de estudio:
Prognostic_studies
Límite:
Adult
/
Female
/
Humans
/
Male
Idioma:
En
Revista:
J Med Eng Technol
Año:
2009
Tipo del documento:
Article
País de afiliación:
Reino Unido