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261 – TSD250 (BPS-II) VMG transducer in the assessment of isometric absolute muscle effort

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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Video is a compelling addition to physiology experiments. Researchers need to understand and observe the behavior of the participant, identify problems during the experiment and get a general sense of behavior and how that behavior relates to the data. If data looks wrong or bad, video can help researchers figure out why.

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