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.