Tahernejad Somayeh, Choobineh Alireza, Razeghi Mohsen, Abdoli-Eramaki Mohammad, Parsaei Hossein, Daneshmandi Hadi, Seif Mozhgan
Department of Ergonomics, Shiraz University of Medical Sciences, Iran.
School of Rehabilitation Sciences, Shiraz University of Medical Sciences, Iran.
Int J Occup Saf Ergon. 2022 Dec;28(4):2346-2354. doi: 10.1080/10803548.2021.1990581. Epub 2021 Nov 23.
Common ergonomic office workstations are designed for a few optimum postures. Nonetheless, sitting is a dynamic activity and the ideal sitting posture is rarely maintained in practice. Therefore, the present study aimed to investigate the sitting behavior of office workers in an actual working environment using ergonomically adjusted workstations to examine whether they promote maintaining appropriate sitting postures. . Sitting behaviors (frequency of postures and position changes in different body parts) were explored among 26 office workers during a 60-min sitting duration, using the posture recording and classification method developed by Graf et al. The rapid upper limb assessment (RULA) method was also used to assess postural load. Then, the results of the RULA method were compared with the results from investigating the sitting behavior of office workers. . Common ergonomic workstations were effective in eliminating some awkward postures. However, some important risk factors such as holding postures with an inappropriate lumbar spine curve (86% of the observations) and maintaining a posture for a long time (for 7-12 min) were observed in the participants' sitting behaviors, while they were neglected in the RULA method. . The common ergonomic workstations could not guarantee the users' appropriate sitting behaviors.
常见的符合人体工程学的办公工作站是为几种最佳姿势设计的。然而，坐着是一种动态活动，在实际操作中很少能保持理想的坐姿。因此，本研究旨在使用符合人体工程学调整的工作站，调查办公室工作人员在实际工作环境中的坐姿行为，以检验这些工作站是否有助于保持适当的坐姿。在60分钟的坐姿持续时间内，采用Graf等人开发的姿势记录和分类方法，对26名办公室工作人员的坐姿行为（不同身体部位姿势和位置变化的频率）进行了探究。还使用快速上肢评估（RULA）方法来评估姿势负荷。然后，将RULA方法的结果与调查办公室工作人员坐姿行为的结果进行比较。常见的符合人体工程学的工作站在消除一些别扭姿势方面是有效的。然而，在参与者的坐姿行为中观察到了一些重要的风险因素，如以不适当的腰椎曲线保持姿势（86%的观察结果）和长时间保持一种姿势（7至12分钟），而这些在RULA方法中被忽略了。常见的符合人体工程学的工作站不能保证使用者有适当的坐姿行为。
