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http://dx.doi.org/10.5392/JKCA.2013.13.02.348

Effects of the Ergonomic Lap Board for Computer Mouse Padding on Upper Limb Movements, Myoelectric Activities, Task Performance, and Subjective Discomfort  

Park, So-Yeon (한서대학교 작업치료학과)
Lee, Taek-Young (한서대학교 작업치료학과)
Yi, JinBock (한서대학교 재활과학기술학과)
Publication Information
The Journal of the Korea Contents Association / v.13, no.2, 2013 , pp. 348-358 More about this Journal
Abstract
This study aimed to investigate the effect of a lap board that was developed to prevent musculoskeletal disorders caused by the use of a computer mouse. Study participants were 10 college students in their 20s who did not have any musculoskeletal symptoms. We analyzed the difference in upper limb movements, electromyographic activity, task performance, and subjective discomfort between 2 conditions: use of a mouse with the lap board and use of a mouse placed on a desk. Results of behavior analysis showed that there was a significant difference between the 2 conditions in terms of the average angle of shoulder flexion, shoulder internal rotation, and forearm pronation(p< 0.05). However, electromyographic activity, task performance, and subjective discomfort showed no significant differences between the 2 conditions. When subjects used the mouse with the lap board, their upper extremity was located much closer to the torso than when they used the mouse placed on the desk. Six of 10 participating students preferred the lap board. We expect that advanced research on prevention of musculoskeletal disorders due to the use of the computer mouse will be conducted in the near future.
Keywords
Computer Mouse; Motion Analysis; Electromyography; Upper Extremity; Musculoskeletal Disorder;
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