Aix-Marseille Univ, CNRS, ISM, 163 Luminy Avenue, 13288 Marseille, Cedex 09, France; Naval Group, 199 Pierre-Gilles De Gennes Avenue, 83190 Ollioules, France.
Aix-Marseille Univ, CNRS, ISM, 163 Luminy Avenue, 13288 Marseille, Cedex 09, France.
Appl Ergon. 2024 Sep;119:104322. doi: 10.1016/j.apergo.2024.104322. Epub 2024 May 31.
Floor inclination can alter hand force production, and lower limb kinetics, affecting control operations, and threatening operator safety in various domains, such as aviation, naval, construction industry, or agriculture. This study investigates the effects of different floor inclinations, on handle push or pull force production. Participants performed maximal isometric contraction tasks requiring to exert a maximal voluntary force either by pulling or pushing a handle, at different floor inclinations from -30° to +30° about the transverse and longitudinal axes. Maximal hand force and Ground Reaction Forces about both feet were recorded. The results revealed non-equivalent variations in hand and feet responses as a function of inclination angle. Specifically, there was a significant reduction in handle push-pull force production, up to 70% (p < 0.001) for extreme inclinations, around both axes. This study provides critical data for design engineers, highlighting the challenge of production forces at steep angles.
地面倾斜会改变手部力量的产生，以及下肢动力学，从而影响控制操作，并在航空、航海、建筑行业或农业等各个领域威胁到操作人员的安全。本研究调查了不同地面倾斜度对手柄推或拉力量产生的影响。参与者在不同的地面倾斜度下完成最大等长收缩任务，需要通过拉动或推动手柄来产生最大自愿力，倾斜度范围为横向和纵向的-30°至+30°。记录了最大手部力量和双脚的地面反作用力。结果显示，手部和脚部的反应随倾斜角度的变化而出现非等效的变化。具体来说，在两个轴上，手柄推拉力量的产生显著降低，最大可达 70%（p<0.001），对于极端倾斜度。这项研究为设计工程师提供了关键数据，突出了在陡峭角度下产生力量的挑战。
