Measurement of postural angles during work

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Abstract
A method for continuous measurement of postural angles (head angle, arm abduction, arm flexion and back angle) is described. The method involves attachment of potentiometer pendulums at the head, shoulder and back. In laboratory tests the equipment (‘Physiometer’) seems to record the actual body angles adequately. The system is relatively simple and robust and well suited for held studies. It is planned to use the technique of postural angle measurements in the assessment of workload. In such measurements several limitations must be considered. These include the support of the body by the elbows and the carriage of load in the hands. Both influence muscular load although the angle may be unchanged.