Effect of a Wrist Motion Storage Biofeedback System (WMSBS) on Wrist Motion during Keyboard Typing Work

Purpose The purpose of this study was to examine the effect of a wrist motion storage biofeedback system on wrist range of motion during keyboard typing work. Subjects For this study, we recruited 10 computer workers as volunteers. Methods Wrist flexion, extension, ulnar deviation, and radial deviation angles were analyzed using a 3-D motion analysis system. Results The wrist flexion, extension, ulnar deviation, and radial deviation angles decreased significantly in keyboard typing work with the wrist motion storage biofeedback system. Conclusion We suggest that the wrist motion storage biofeedback system promotes the adoption of a beneficial wrist posture, which may be effective at preventing computer work-related wrist disorders, such as carpal tunnel syndrome.