Advisor(s)
Abstract(s)
This article presents the outcome of correlation analyses of data results obtained from using different
methods for objectively and subjectively assessing hand force from a prospective study of 450 bluecollar
workers from several companies and industries, followed for up to 3 years. The study collected
detailed ergonomic exposure data at baseline and upper extremity health outcome data at baseline
and every 4 months during the study. Ultimately, the study was intended to evaluate dose-response
relationships of specific upper extremity disorders with detailed physical and psychosocial exposure
data at the workplace while controlling for important individual factors. This article presents the
methods used to collect data, as well as the hand force results of the epidemiological study in aggregate
correlated form, as a means of exploring the degree of independence between the variables considered.
These insights are useful in identifying musculoskeletal disorder (MSD) causation and predicting
MSD risk based on work exposures. An enhanced understanding of the independence of MSD causal
factors is instrumental in establishing more accurate multivariable models of MSD causation that
will play an important role in extrapolating from the understanding of mechanisms of causation to
establishing effective recommendations and programs to prevent the occurrence of MSDs.
Description
Keywords
Musculoskeletal disorders (MSDs) Grip and pinch forces Exposure assessment Multivariable models of MSD causation