The effects of arm supports during light assembly and computer work tasks

This paper consists of three different investigations which focused on the implementation of an arm support system and its effect on the level of pain and/or discomfort experienced by subjects while completing either a light assembly or a computer typing task. The types of arm support systems included no arm supports, Ergorest articulating arm supports, chair arm supports at maximum breadth, midpoint breadth, minimum breadth, and counter-balanced arm slings. Results indicated that arm supports significantly impacted comfort, effort required, RPE, EMG activity, and heart rate. It was concluded that in light assembly and computer work tasks, an arm support system would be recommended to minimize effort and RPE, and to maximize comfort. Relevance to industry - Computer use and light assembly work are an integral part of various workplaces which often require employees to work in constrained unsupported postures, at repetitive tasks and in precision work with hands, arms and fingers. This paper proposes a solution that could aid individuals in these environments. Copyright (C) 1999 Elsevier Science B.V.