Data underlying the publication "Comfort and discomfort during smartphone use on a bed".

People use a smartphone while sitting on the sofa, lying on a bed or riding on a train or an airplane. Using a smartphone for a long period could lead to musculoskeletal disorders mainly in the neck, upper and lower back, shoulders and arms. Not only are seats installed in vehicles, but beds are also in trains, airplanes and ships. This paper focuses on smartphone use on a bed. Such use is not preferable because the literature review showed that intraocular pressure is higher in the supine than in the sitting position (Vera et al., 2020), but in practice, people will use their smartphones in bed. In those cases, a good backrest angle is preferred. This is the topic of this chapter.

人们常于沙发就坐、卧床躺卧或搭乘火车、飞机时使用智能手机。长期使用智能手机可能引发肌肉骨骼系统疾病，主要累及颈部、上下背部、肩部及手臂。不仅交通工具内配备座椅，火车、飞机与船舶上也设有卧床设施。本章节聚焦于卧床状态下的智能手机使用场景。尽管此类使用场景并不理想——已有文献综述显示，仰卧位时的眼内压高于坐位（Vera等人，2020），但现实中人们仍会卧床使用智能手机。在此类场景下，采用适宜的靠背角度更为合适，这亦是本章的研究主题。