Mobile input device type, texting style and screen size influence upper extremity and trapezius muscle activity, and cervical posture while texting
Mobile input device type, texting style and screen size influence upper extremity and trapezius muscle activity, and cervical posture while texting
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DOI：
10.1016/j.apergo.2015.03.003
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发表时间：
2015-09-01
影响因子：
3.2
通讯作者：
Gold, Judith E.
中科院分区：
文献类型：
--
作者：
Kietrys, David M.;Gerg, Michael J.;Gold, Judith E.
本研究的目的是确定输入设备类型，短信的风格，和屏幕尺寸对上肢和阔肌肌肉活动和颈部姿势在一个简短的短信任务在大学生。使用物理键盘的用户比使用类似尺寸的触摸屏设备发短信时产生更大的拇指、手指屈肌和手腕伸肌肌肉活动。与双手/拇指相比，用一只手/拇指发短信时，在任何一种设备上发短信都会产生更大的手腕伸肌活动。随着触摸屏尺寸的增加，更多的参与者将设备放在膝盖上，并选择较少使用两个拇指。随着触摸屏尺寸的增加，手指屈肌、腕伸肌和阔肌肌肉活动也有增加的趋势，颈椎屈曲也有增加的趋势，尽管颈椎屈曲的平均差异很小。未来的研究可以帮助了解在发短信期间观察到的人体工程学压力源是否与肌肉骨骼疾病风险相关。(C)2015 Elsevier Ltd和人体工程学学会。All rights reserved.
This study aimed to determine the effects of input device type, texting style, and screen size on upper extremity and trapezius muscle activity and cervical posture during a short texting task in college students. Users of a physical keypad produced greater thumb, finger flexor, and wrist extensor muscle activity than when texting with a touch screen device of similar dimensions. Texting on either device produced greater wrist extensor muscle activity when texting with 1 hand/thumb compared with both hands/thumbs. As touch screen size increased, more participants held the device on their lap, and chose to use both thumbs less. There was also a trend for greater finger flexor, wrist extensor, and trapezius muscle activity as touch screen size increased, and for greater cervical flexion, although mean differences for cervical flexion were small. Future research can help inform whether the ergonomic stressors observed during texting are associated with musculoskeletal disorder risk. (C) 2015 Elsevier Ltd and The Ergonomics Society. All rights reserved.