使用不同重量滑鼠在不同工作速度下，對上肢肌肉活動的影響

The effect on forearm and shoulder muscle activity in using different weight computer mice at various moving speeds

李昌憲(Chang-sian Lee)

指導教授 ： 陳漢明

國立臺灣大學/工學院/機械工程學研究所/碩士(2007年)

https://doi.org/10.6342/NTU.2007.02709

摘要

國外有不少的文獻、論文針對使用新型滑鼠和傳統滑鼠的肌肉負荷作比較，以探討使用人體工學滑鼠對肌肉負荷的改善。但鮮少文獻以滑鼠的重量作比較與探討。
在本研究中，我們針對滑鼠的重量特徵作出探討，討論在不同重量的滑鼠(70克、100克、130克、160克以及190克)在不同的工作速度之下，上肢肌肉的肌肉負荷。因此利用表面肌電儀(Surface Electromyography,sEMG)以及電子量角器量測使用者操作不同重量(70克、100克、130克、160克、190克)滑鼠時手部肌肉(尺側伸腕肌、伸指肌、橈側伸腕肌和斜方肌)的負荷，並以定性及定量的分析方法，探討所量得的資料，從而選出最佳的重量。
研究結果表示經常使用過輕或是過重的滑鼠，會造成前臂肌肉的不適。且不同重量的滑鼠在不同的工作速度之下有著不同肌電訊號。25個受測者在實驗使用著不同重量的滑鼠，移動著游標追尋目標物以及擊點目標。在一般的工作速率之下，使用130G的滑鼠較不易造成手部肌肉(尺側伸腕肌、伸指肌)的負荷。而在較慢的工作速率之下，則使用70G的滑鼠會比較容易減少傷害。因此在不同的工作速率之下，最佳使用的滑鼠重量也會隨之改變。

關鍵字

加重的滑鼠 ； 滑鼠重量 ； 前臂與肩部的肌電訊號 ； 表面肌電儀

並列摘要

Computer mouse was one of the most general input devices during the usage of the personal computer. There were many literatures aimed on investigating the relationship in muscular activity between the usage of the traditional and ergonomic computer mouse but rarely reported the effect on musclar activity by using different weighted mouse.
This study was aim at evaluate forearm and shoulder muscle activity in using computer mice with five different weights (70G, 100G, 130G, 160G and 190G) at two various moving speeds. The muscle activity of the Right extensor carpi ulnaris (ECU), right extensor digitorum communis (ED), right carpi radialis (ECR) and right upper trapezius (Trap) were recorded by the surface electromyography and ulnar/radial deviation were registered by an electrogoniometer compared by statistic test when using five different weight.
Frequently using overweight or underweight computer mice will cause musculoskeletal discomfort and symptoms in forearms and shoulders. Varied weighted mice moving at different speeds may have various effects on forearm and shoulder muscle activity. All of the twenty-five subjects performed the same task of moving the cursor onto a circle and clicking with the five different weight mice at two various moving speeds. The lowest ECU and ED muscle activity occurred in using the 130G mouse at the normal speed, but that occurred in using the 70G mouse at the low speed. At a specific mouse moving speed, there will be a corresponding optimal weight to the mouse to ensure some forearm muscle activity being the lowest.

並列關鍵字

Weighted mouse ； Mouse weight ； Forearm andshoulder muscle activity ； Surface electromyography

參考文獻

Atkinson, S., Woods, V., Haslam, R.A., Buckle, P., 2004. Using non-keyboard input devices: interviews with users in the workplace. International Journal of Industrial Ergonomics 33, 571-579.

musculoskeletal disorders of the upper limb. Joint Bone Spine 69,

Agarabi, M., Bonato, P., De Luca, C.J., 2004. A sEMG-based method for assessing the design of computer mice. In Proceedings of the 26th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, San Francisco, CA, USA, pp. 2450-2453.

Aarås, A., Ro, O., 1997. Workload when using a mouse as an input device. International Journal of Human-computer Interaction 9, 105-118.

Aarås A., Dainoff M., Ro O., Thoresen M., 2002. Can a more netural position of the forearm when operating a computer mouse reduce the pain level for VDU operators? International Journal of Industrial Ergonomics 30, 307-324.