Continuous monitoring of upper-limb activity in a free-living environment

The results suggest that the quantification of vertical position of the wrist with respect to the shoulder might reflect upper-limb activity. By using the SULAM, it is possible to monitor upper-limb activity over the course of a person's normal day, with minimal interference. This study provides preliminary evidence of the SULAM as a useful tool for objectively evaluating interventions aimed at improving upper-limb activity and function.