School of Allied Health Sciences, Walailak University, Thailand.
Int J Occup Saf Ergon. 2023 Mar;29(1):424-430. doi: 10.1080/10803548.2022.2054543. Epub 2022 Apr 26.
This study aims to compare changes in neck angles, muscle activities, ergonomic risk and body discomfort caused by use of two different computer screen sizes. The 36 female users who participated used displays with 46.99 and 58.42-cm screen sizes and were assessed for craniocervical angle (CCA), craniovertebral angle (CVA), upper trapezius (UT) and sternocleidomastoid (SCM) muscle activity, ergonomic risk and body discomfort for a duration of 1 h. The results showed there were no significant differences when comparing usage between both computer screen sizes ( > 0.05). However, there were significant differences in the CCA, UT muscle activity and body discomfort when comparing before and after usage for both computer screen sizes ( < 0.05). The results indicate that computer users can select different screen sizes for working but should be concerned with neck angle, muscle activity and body discomfort when using for long periods of time.
本研究旨在比较使用两种不同电脑屏幕尺寸时颈部角度、肌肉活动、人体工程学风险和身体不适的变化。36 名女性参与者使用屏幕尺寸为 46.99cm 和 58.42cm 的显示器，评估头颈角（CCA）、颅颈角（CVA）、上斜方肌（UT）和胸锁乳突肌（SCM）的肌肉活动、人体工程学风险和身体不适的持续时间为 1 小时。结果表明，在比较两种电脑屏幕尺寸的使用情况时，没有显著差异（>0.05）。然而，在比较两种电脑屏幕尺寸的使用前后时，CCA、UT 肌肉活动和身体不适有显著差异（<0.05）。结果表明，电脑使用者可以选择不同的屏幕尺寸进行工作，但在长时间使用时应注意颈部角度、肌肉活动和身体不适。
