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VMG – Assess absolute isometric muscle effort

AcqKnowledge Vibromyography data VMG

Vibromyography (VMG) has distinct benefits over EMG in that the recordings much more accurately reflect absolute muscle effort up to 100% maximum voluntary contraction. Correspondingly, VMG can be used to both evaluate muscle changes over time in a given individual or to compare between two populations the muscle effort required to complete a specific task. The ability to discriminate muscle effort changes depends on the precision and accuracy of the VMG under these two scenarios, that is, the intra-assay accuracy and variability and the inter-assay accuracy and variability. Here, we address the inter-assay variability of VMG recordings in healthy adult men, focusing on isometric contraction of an upper extremity muscle.

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Click for Precision and accuracy of the TSD250 (BPS-II) VMG transducer in the assessment of isometric absolute muscle effort  pdficon_small.gif

Perfrom muscle effort assessments with Vibromyography (VMG) systems from BIOPAC.

VMG transducers record vibration data received from microelectromechanical systems (MEMS) sensors and proprietary software.

– VMG amplitude increases monotonically with muscle effort – Only one scaling factor required for all subjects – Relationship is between ABSOLUTE effort and VMG

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