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Updated: Oct 17, 2026

A Novel Application of Musculoskeletal Ultrasound Imaging
Published on: September 17, 2013
How strongly is muscle activity associated with joint moments?
1Department of Exercise Science, University of Massachusetts, Amherst 01003, USA.
Abstract:
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.
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