School of Health and Rehabilitation Science, The University of Queensland, Australia.
Department of Rehabilitation Science, The Hong Kong Polytechnic University, Hong Kong.
Appl Ergon. 2018 Apr;68:160-168. doi: 10.1016/j.apergo.2017.10.018. Epub 2017 Nov 24.
To advance our understanding about the association between smartphone use and chronic neck-shoulder pain, the objective of this study was to compare spinal kinematics between different text-entry methods in smartphone users with and without chronic neck-shoulder pain. Symptomatic (n = 19) and healthy participants (n = 18) were recruited and they performed three tasks: texting on a smartphone with one hand, with two hands, and typing on a desktop computer. Three-dimensional kinematics were examined in the cervical, thoracic and lumbar regions for each task. This study suggests that altered kinematics may be associated with pain since significantly increased angles of cervical right side flexion during smartphone texting and greater postural changes in cervical rotation were found during all text-entry tasks in the symptomatic group. Two-handed texting was associated with increased cervical flexion while one-handed texting was correlated with an asymmetric neck posture, indicating both text-entry methods are not favorable in terms of spinal postures.
为了增进我们对智能手机使用与慢性颈肩痛之间关联的理解，本研究旨在比较有和无慢性颈肩痛的智能手机使用者在采用不同文字输入方式时的脊柱运动学差异。研究招募了有症状（n=19）和健康（n=18）参与者，并让他们执行三项任务：单手使用智能手机输入文本、双手使用智能手机输入文本和在台式电脑上打字。对每个任务的颈椎、胸椎和腰椎区域进行三维运动学检查。本研究表明，运动学改变可能与疼痛相关，因为在有症状组中，智能手机输入文本时颈椎右侧屈伸角度显著增加，并且在所有文字输入任务中颈椎旋转的姿势变化更大。双手输入文本与颈椎前屈增加有关，单手输入文本与颈部姿势不对称有关，这表明这两种文字输入方式在脊柱姿势方面都不理想。
