LONGITUDINAL STUDY OF THE EFFECTS OF AN ADJUSTABLE ERGONOMIC KEYBOARD ON UPPER BODY MUSCULOSKELETAL SYMPTOMS

摘要

A longitudinal study assessed the differential impact of standard and adjustable ergonomic keyboards on musculoskeletal symptoms among 7 1 computer users over a six month period. A total of 73 subjects participated: 34 subjects used a standard, flat keyboard and 37 used an adjustable, ergonomic keyboard. Subjects completed weekly surveys of perceived keyboard comfort, and body discomfort, along with other items. The ergonomic keyboard was rated favorably and for users there were significantly improvements neck, shoulder and arm comfort.