Luo Ziyi, Li Baojian, Liu Ying, Liu Lu, Li Yang, Liu Gang
1Department of Rehabilitation Medicine, Southern Medical University Nanfang Hospital, Guangzhou, China.
2Center for Scientific Research and Institute of Exercise and Health, Guangzhou Sport University, Guangzhou, China.
Acta Bioeng Biomech. 2025 Jan 28;26(2):73-79. doi: 10.37190/abb-02411-2024-03. Print 2024 Jun 1.
: The purpose of this study was to quantify the impact of smartphone use while sitting on the toilet on the spinal flexion angles and the time effect. : Measurements of the spinal flexion angles in the sagittal plane were made by thirty participants while they sat on the toilet for 10 min, using a smartphone in either one, both, or neither hand. The individual's forehead, cervical, thoracic and lumbar spinal areas were each fitted with five different inertial motion sensors. SPSS 26.0 software was used to statistically evaluate all of the data. : People who used smartphones with both hands had considerably larger ( < 0.05) cervical and spinal flexion angles than those who did not. A statistically significant ( < 0.001) association was observed by regression analysis between time and spinal flexion angle ( = 0.747 for no smartphone, = 0.793 for a smartphone used in one hand and = 0.855 for a smartphone used in both hands). Consequently, when using the smartphone with both hands, the flexion angle of the spine entered a more stable state of angles. : The results showed that the cervical region's flexion angles change when using a smartphone while sitting on the toilet. Even when not using a smartphone, the flexion angle of the spine when sitting on the toilet will progressively increase.
本研究的目的是量化坐在马桶上使用智能手机对脊柱弯曲角度的影响以及时间效应。30名参与者坐在马桶上10分钟，单手、双手或不使用智能手机的情况下，测量矢状面脊柱弯曲角度。个体的额头、颈椎、胸椎和腰椎区域均安装了五个不同的惯性运动传感器。使用SPSS 26.0软件对所有数据进行统计评估。双手使用智能手机的人颈椎和脊柱弯曲角度比不使用的人显著更大（<0.05）。通过回归分析观察到时间与脊柱弯曲角度之间存在统计学显著关联（不使用智能手机时R = 0.747，单手使用智能手机时R = 0.793，双手使用智能手机时R = 0.855）。因此，双手使用智能手机时，脊柱的弯曲角度进入更稳定的角度状态。结果表明，坐在马桶上使用智能手机时颈椎区域的弯曲角度会发生变化。即使不使用智能手机，坐在马桶上时脊柱的弯曲角度也会逐渐增加。
