ABSTRACT
The relationship between human activity and MSD can be investigated from a number of disciplines using many methodological approaches. Most evidence is available from the relationship between work and MSD; however, in this chapter other activities will be mentioned where appropriate. The epidemiological research addressing the relationship between work exposure and MSD will not be addressed here as it has been extensively
reviewed in Hagberg et al. (1995), Bernard (1997), and NRC (2001). These reviews found strong and consistent relationships between many types of MSD and workplace exposures.
