Department of Kinesiology, University of Waterloo, Waterloo, Ontario, Canada.
Defence Research and Development Canada, Toronto, Ontario, Canada.
IISE Trans Occup Ergon Hum Factors. 2020 Apr-Jun;8(2):63-71. doi: 10.1080/24725838.2020.1767228. Epub 2020 Jun 11.
The aim of this project was to develop and test an application capable of quickly and repeatedly measuring trunk flexion angles during sagittal plane lifting tasks. The developed application uses the built-in accelerometer in mobile devices to approximate trunk flexion angle, as the user follows an operator as they perform a lift. A black line is superimposed over the camera feed, allowing the user to approximate the angle of inclination of a line connecting the operator's seventh cervical and first sacral vertebrae-thereby estimating the trunk flexion angle. The magnitude of this angle and its velocity have been linked to the development of occupational low back pain; thus the application provides ergonomists a more refined means of screening tasks beyond currently available survey tools.
本项目旨在开发和测试一种能够快速、重复测量矢状面提升任务中躯干前屈角度的应用程序。该应用程序使用移动设备中的内置加速度计来近似躯干前屈角度，用户跟随操作员进行提升。在摄像头的视频上叠加一条黑线，允许用户近似连接操作员第七颈椎和第一骶椎的连线的倾斜角度，从而估计躯干前屈角度。这个角度的大小及其速度与职业性下腰痛的发展有关；因此，该应用程序为人体工程学家提供了一种比现有调查工具更精细的筛选任务的手段。
