Department of Occupational Health, Faculty of Health, Tabriz University of Medical Sciences, Tabriz, Iran.
Centro de Estudio del Trabajo y Factores Humanos, Facultad de Medicina, Universidad de Valparaíso, Valparaíso, Chile.
Appl Ergon. 2021 Jul;94:103421. doi: 10.1016/j.apergo.2021.103421. Epub 2021 Mar 30.
This study evaluated the potential mismatch between vacuum-sealed jar opening demands and wrist torque strength of 758 (384 males and 374 females) participants aged 5-74 years in Iran. Wrist ulnar/radial (U/R) torque strength of participants and required torque for opening the existing jars (with 2 different sizes - 65 mm and 85 mm diameter lids) were measured using a digital angle torque adaptor and then compared together to identify any potential mismatch between them. The mismatch percentages were defined as the number of participants whose maximal wrist U/R torque strength were lower than the minimum required torque strength for opening the vacuum-sealed jars. Minimum required torque strength for opening the existing 65 mm and 85 mm vacuum-sealed jars were 4.1 Nm and 6.6 Nm, respectively (range = 4.1 Nm to 10.2 Nm). A considerable mismatch (range = 25%-100%) was found between the required torque strength for opening the existing jars and the wrist U/R torque strength of the study population, particularly for females and those aged 5-9 years. A torque limit of 1.8 Nm was proposed for opening jars for the entire population.
本研究评估了伊朗 758 名（384 名男性和 374 名女性）年龄在 5-74 岁的参与者的真空密封罐开启需求与腕部扭矩强度之间潜在的不匹配情况。使用数字角度扭矩适配器测量了参与者的腕部尺桡（U/R）扭矩强度和开启现有罐子所需的扭矩（有两种不同的尺寸-65mm 和 85mm 直径的盖子），然后将它们进行比较，以确定它们之间是否存在潜在的不匹配。不匹配百分比定义为最大腕部 U/R 扭矩强度低于打开真空密封罐所需的最小扭矩强度的参与者数量。打开现有 65mm 和 85mm 真空密封罐所需的最小扭矩强度分别为 4.1Nm 和 6.6Nm（范围为 4.1Nm 至 10.2Nm）。在现有罐子的开启所需扭矩强度与研究人群的腕部 U/R 扭矩强度之间发现了相当大的不匹配（范围为 25%-100%），特别是对于女性和 5-9 岁的人群。建议为整个人群打开罐子的扭矩限制为 1.8Nm。
