Muscle activation patterns during force generation of the index finger

The article investigated whether joint postures affect index finger muscle activation patterns. Ten subjects attempted to produce submaximal isometric forces in six orthogonal directions (palmar, dorsal, abduction, adduction, distal and proximal) at each of 9 different joint postures. Activation pat...

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Bibliographic Details
Published in2009 Annual International Conference of the IEEE Engineering in Medicine and Biology Society Vol. 2009; pp. 3987 - 3990
Main Authors Dan Qiu, Fischer, H.C., Kamper, D.G.
Format Conference Proceeding Journal Article
LanguageEnglish
Published United States IEEE 01.01.2009
Subjects
Adult
Algorithms
Clamps
Electromyography - instrumentation
Electromyography - methods
Equipment Design
Fasteners
Female
Finger Joint - physiology
Fingers
Fingers - physiology
Force feedback
Force measurement
Hand Strength
Humans
Magnetic separation
Male
Middle Aged
Movement - physiology
Multivariate Analysis
Muscle, Skeletal
Muscles
Particle measurements
Stress, Mechanical
USA Councils
Wrist
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Summary:The article investigated whether joint postures affect index finger muscle activation patterns. Ten subjects attempted to produce submaximal isometric forces in six orthogonal directions (palmar, dorsal, abduction, adduction, distal and proximal) at each of 9 different joint postures. Activation patterns were recorded from intramuscular electrodes inserted into 6 of the index finger muscles. Post hoc statistical analysis revealed that joint angles significantly affected muscle activation levels for each of the force directions. Activation was especially sensitive to interphalangeal joint angles; changes in these angles led to not only changes in the magnitude of activation but to changes in patterns as well.
ISSN:1094-687X
1557-170X
1558-4615
DOI:10.1109/IEMBS.2009.5333525