How strongly is muscle activity associated with joint moments?

In this commentary we question whether the relationship between muscle activity and joint moments is the same for natural motor tasks as for controlled experimental situations. An important consideration in this regard is the identification of the correct electromechanical delay (EMD) for comparing...

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Bibliographic Details
Published in:Motor control 2000-01, Vol.4 (1), p.53-59
Main Authors: Caldwell, G E, Li, L
Format: Article
Language:English
Subjects:
Animal behavior
Electromyography - methods
Humans
Joints - innervation
Movement - physiology
Muscle function
Muscle, Skeletal - innervation
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Summary:In this commentary we question whether the relationship between muscle activity and joint moments is the same for natural motor tasks as for controlled experimental situations. An important consideration in this regard is the identification of the correct electromechanical delay (EMD) for comparing EMG and joint moment data. Data from recent cycling studies are used to illustrate the importance of EMD, and how changing task constraints can alter the relation between muscle activity and joint moment balance for bi-articular antagonist pairs.
ISSN:1087-1640
1543-2696
DOI:10.1123/mcj.4.1.53