ABSTRACT
Work and other activities are inherently dynamic, albeit interspersed with quasistatic postures; a single static analysis is usually not sufficient for most jobs although the ‘peak’ loading remains important. As a result some investigators are moving to continuous recording in the field for periods counted in hours, This has two results: it challenges data collection but also raises questions concerning how to analyse long records of forces or posture. To provide biomechanical load estimates over industrially useful time periods using most current measurement systems results in very tedious collection and analysis. Electromyography has a clear advantage in this respect.
