Department of Biomedical Engineering, Faculty of Engineering, Lund University, Sweden.
Division of Ergonomics and Aerosol Technology, Department of Design Sciences, Faculty of Engineering, Lund University, Sweden.
Ind Health. 2018 Jul 27;56(4):292-299. doi: 10.2486/indhealth.2018-0005. Epub 2018 Mar 3.
Working and walking environments often involve standing positions on different surfaces with inclination and different friction. In this study, standing balance of thirteen participants during sudden and irregular external perturbation to calf muscles was investigated. The aim of the study was to evaluate the combined effect of surface inclination and friction on standing balance. The main findings when eyes closed revealed that the standing utilised coefficient of friction (μ) increased when the surface was inclined for both high and low friction materials. The anterior-posterior torque increased more anteriorly when the surface was inclined toes down and when the surface friction was low. The results indicate that the anterior-posterior torque is a sensitive parameter when evaluating standing balance ability and slip risk. On inclined surface, particularly on the surface with lower friction, the potential slip and fall risk is higher due to the increase of standing utilised coefficient of friction and increased forward turning torque.
工作和步行环境通常涉及在不同倾斜度和不同摩擦系数的表面上站立。本研究调查了 13 名参与者在小腿肌肉突然受到不规则外部干扰时的站立平衡。研究的目的是评估表面倾斜和摩擦对站立平衡的综合影响。闭眼时的主要发现是，在高摩擦和低摩擦材料中，当表面倾斜时，站立时利用的摩擦系数（μ）增加。当表面倾斜且摩擦力较低时，前向后扭矩更向前移动。结果表明，当评估站立平衡能力和滑倒风险时，前向后扭矩是一个敏感的参数。在倾斜的表面上，特别是在摩擦力较低的表面上，由于站立时利用的摩擦系数增加和向前转动扭矩增加，潜在的滑倒和跌倒风险更高。
