Abstract

Awkward postures are considered one of the main risk factors for musculoskeletal disorders (MSDs). Several methods can be used to characterize work postures but they are rather impractical for analyzing long periods, particularly when the activities are varied. Also, several existing methods can only be used in the laboratory. The objective of this project is to develop an instrument for measuring, in the field and continuously over long periods, the postures of one of the upper limbs as well as back postures.
At the end of this project, a measuring instrument for field use that continuously documents upper limb and back postures will be available. By synchronizing a video camera and posture recording, each activity can be associated with a distribution of amplitudes, frequencies and durations of maintenance that represent these postures. In so doing, we will improve our knowledge of the worker’s actual exposure to awkward postures and relate them to their associated activities.
This tool can be used in several projects considered by the IRSST’s researchers. The data collected by this dosimeter will help the researchers evaluate the postural constraint associated with different work activities and better focus the intervention efforts, for MSD prevention and rehabilitation. Finally, we will ensure the validity of the data collected by this instrument by comparing this data to that obtained by our optoelectronic system (Optotrak).