Chen Yi-Lang, Nguyen Hong-Tam
Department of Industrial Engineering and Management, Ming Chi University of Technology, New Taipei 243303, Taiwan.
Buy2sell Vietnam, Ho Chi Minh 751000, Vietnam.
Healthcare (Basel). 2023 Nov 23;11(23):3027. doi: 10.3390/healthcare11233027.
The habit of using smartphones while walking has become widespread among modern individuals, particularly when pedestrians are in a hurry. However, there has been little exploration into the differences between standing and walking at various speeds in terms of smartphone use. In this study, we examined 60 young participants (30 men and 30 women) who engaged in smartphone tasks such as one-handed browsing or two-handed texting while standing, walking slowly, and walking normally. The measured variables included neck flexion (NF), head flexion (HF), gaze angle (GA), and viewing distance (VD). The study findings indicate that using smartphones while walking may cause a more pronounced kyphotic curve in the cervical spine compared to when standing, leading to increased strain in the neck region. The heightened neck load can be attributed to the concurrent dynamic nature of both walking and smartphone usage. Moreover, two-handed texting had a more detrimental impact on NF, HF, and GA when contrasted with one-handed browsing. The interplay among hand operation, posture, and maintaining arm position displayed an uncertain correlation with VD. While women typically exhibited smaller NF, HF, and GA than men, it is important to explore whether their shorter VD might contribute to increased eyestrain.
在现代人群中，走路时使用智能手机的习惯已十分普遍，尤其是当行人匆忙赶路时。然而，对于在不同速度行走以及站立状态下使用智能手机的差异，目前鲜有研究。在本研究中，我们对60名年轻参与者（30名男性和30名女性）进行了测试，他们在站立、慢走和正常行走时执行诸如单手浏览或双手打字等智能手机任务。测量变量包括颈部前屈（NF）、头部前屈（HF）、注视角度（GA）和观看距离（VD）。研究结果表明，与站立时相比，走路时使用智能手机可能会使颈椎的驼背曲线更加明显，导致颈部区域的压力增加。颈部负荷的增加可归因于行走和使用智能手机这两种动态行为的同时发生。此外，与单手浏览相比，双手打字对NF、HF和GA的影响更大。手部操作、姿势和保持手臂位置之间的相互作用与VD的相关性尚不明确。虽然女性的NF、HF和GA通常比男性小，但探究她们较短的VD是否会导致眼睛疲劳加剧很重要。
