Department of Industrial Engineering, Seoul National University, Seoul, South Korea.
Institute for Industrial Systems Innovation, Seoul National University, Seoul, South Korea.
Ergonomics. 2022 Dec;65(12):1711-1721. doi: 10.1080/00140139.2022.2053210. Epub 2022 Mar 24.
This study investigated how sex modifies postural discomfort perception during a sagittally-symmetric, seated static posture holding (SPH) task. Ten male and 10 female participants performed SPH and conducted subjective discomfort ratings in a total of 108 task conditions. A regression analysis found that the impacts of the body joint reactive moments on perceived discomfort were larger for the female group than the male whereas that of the shoulder joint angle was more pronounced for the male than the female. Also, some of the 108 task conditions were found to be more uncomfortable for the male group, while some others, for the female. The observed sex impacts are thought to be due to the sex differences in physical work capacities (muscular strength and joint flexibility). The results suggest that new posture analysis tools allowing sex-specific analyses are needed as they would improve the accuracy and precision of ergonomics posture analyses. This study empirically investigated how sex modifies postural discomfort perception during a seated posture holding (SPH) task. Sex was found to modify the impacts of joint reactive moments and the shoulder joint angle. The study results seem to reflect the sex differences in muscular strength and joint flexibility.
本研究调查了性别如何改变矢状对称坐姿静态姿势保持（SPH）任务中的姿势不适感知。10 名男性和 10 名女性参与者在总共 108 种任务条件下进行了 SPH 并进行了主观不适评分。回归分析发现，对于女性组，身体关节反作用力矩对感知不适的影响大于男性，而对于男性，肩部关节角度的影响更为明显。此外，发现 108 种任务条件中的一些对男性组更不适，而另一些则对女性组更不适。观察到的性别影响被认为是由于体力工作能力（肌肉力量和关节灵活性）的性别差异所致。结果表明，需要新的允许性别特定分析的姿势分析工具，因为它们可以提高人体工程学姿势分析的准确性和精度。本研究从实证角度研究了性别如何改变坐姿保持（SPH）任务中的姿势不适感知。结果发现性别改变了关节反作用力矩和肩部关节角度的影响。研究结果似乎反映了肌肉力量和关节灵活性的性别差异。
