근골격계 질환 방지를 위한 마우스 손목지지대 개선에 관한 연구 = A Study on the improvement of the wrist support for preventing the musculoskeletal disorders

다국어 초록 (Multilingual Abstract)

Increased usage of the computer mouse has been a essential factor affecting the musculoskeletal disorders(MSDs). The purpose of this study is to determine whether there are differences in wrist movement variations, forearm muscular loads, comfort and normal performance among a proposed movable wrist support, fixed wrist support and without wrist support when using a computer mouse. Eight subjects performed a standardized simple task set which has structured six detailed tasks with each wrist support option. The wrist angle variations in the right arm were registered by electrogoniometer and the muscle activity in the shoulder, deltoid and two extensors in the forearm were also registered by electromyography. The subjects rated perceived comfort while performing the tasks with each wrist support option. Working with proposed movable wrist support, compared to other options, gave significantly decreased wrist angle variations at almost tasks both biaxial movements. There is a decrease of 50% in wrist angle movements and 30% in EMG amplitude when compared a proposed wrist support with no wrist support. Also, in work with a proposed wrist support, the subjects rated more comfort but they showed a little decreased performance in a few detailed tasks.

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