Estimating Muscle Load Using Surface EMG Amplitude

The purpose of the Marconi 98 Research Conference is to discuss the question: "Under what circumstances can surface EMG amplitude be used to estimate loads of upper extremity and neck muscles during the performance of precision tasks (e.g. use of a keyboard, monitor viewing, etc.)?"

The conference was held December 11 - 14, 1998 at the Marconi Center on the West coast of Marin County, CA near San Francisco. Researchers and practitioners are increasingly using sEMG amplitude to assess muscle load during work in order to evaluate the demands of jobs, tools, workstations and tasks. Muscle load may be related to performance, fatigue and injury; therefore, such measurements may have value in designing work in order to improve productivity and prevent discomfort and injury.

The conference is organized by David Rempel, MD, Ergonomics Program, University of California, San Francisco. The meeting is sponsored by the Office Ergonomics Research Committee.


Proceeding Papers

Estimating Muscle Load Using Surface EMG Amplitude: Introduction
David Rempel, M.D.

Surface EMG as a load estimator - Aspects on validity and reliability.
Goran Hagg, M.D.

The contribution of motor unit potentials to the surface EMG.
Roger Enoka, Ph.D.

Distribution of EMG activity over the upper trapezius muscle.
Chris Jensen, Ph.D.

Variability assessment of surface electromyographic data from trapezius and cervical ES muscles for maximum exertions and during performance of computer tasks.
Carolyn Sommerich, Ph.D.

Influence of postures during precision work on neck-shoulder muscular effect.
Veerle Hermans, Ph.D.

The influence of normalization procedure on the variability in surface EMG amplitude within and between subjects.
Svend-Erik Mathiassen, Ph.D.

Comparison of fine wire to surface EMG amplitude of finger muscles during a precision task.
Melissa Jacobson, M.S.

Accuracy of surface EMG to assess forearm muscle load during typing.
Bernard Martin, Ph.D.

Signal processing for dynamic surface EMG in trunk muscles.
Evelyn Morin, Ph.D.

Effect of signal processing methods on the accuracy of surface EMG amplitude estimation and EMG-to-torque prediction.
Edward Clancy, Ph.D.

Influence of signal processing methods on sensitivity of surface EMG amplitude to tasks in a field study.
Gert-Ake Hansson, M.S.

Viscoelastic Creep and EMG.
Moshe Solomonow, Ph.D., M.D.

Lessons from use of surface EMG amplitude for back muscles: controlling motion artifact and other extraneous sources of variability.
Bill Marras, Ph.D.

Repeatability and sources of variance of surface EMG measures during the performance of work tasks.
Rolf Westgaard, M.D., Ph.D.

Comparison of between-groups and intra-subject variability in sEMG amplitude in a laboratory study of keyboard design.
Naomi Swanson, Ph.D.

Repeatability of surface EMG measures during the performance of identical tasks.
Roland Kadefors, Ph.D.

Day to day variations in static calibrations.
Mike Gerard, Ph.D.

Precision and recording time in occupational electromyography.
Richard Wells, Ph.D



Marconi Research Conference
December 11 - 14, 1998
Marconi Conference Center
Marshall, California, USA