Assessment of physical work load in epidemiologic studies : concepts, issues and operational considerations

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      <subfield code="a">Ergonomic epidemiology is a rapidly increasing field of research providing data on the occurrence of muscoloskeletal disorders and possible risk factors. The present paper states, on the basis of a literature overview, that physical work load is poorly defined and measured in most studies on ergonomic epidemiology. On this background the paper: suggests adjustments of mechanical exposure concepts and terminology; concludes that invalid exposure assessment may, to a large extent, explain the lack of quantitative data on relationships between mechanical exposures and muscoloskeletal disorders; and suggests some guidelines for future quantitative assessments of mechanical exposure in large populations</subfield>
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      <subfield code="t">Ergonomics</subfield>
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      <subfield code="g">Vol. 37, nº 6, June 1994 ; p. 979-988</subfield>
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