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Effect of shaft stiffness and sole flexibility on perceived comfort and the plantar pressures generated when walking on a simulated underground coal mining surface.
Applied Ergonomics ( IF 3.2 ) Pub Date : 2020-01-10 , DOI: 10.1016/j.apergo.2019.103024
Jessica A Dobson 1 , Diane L Riddiford-Harland 1 , Alison F Bell 2 , Caleb Wegener 3 , Julie R Steele 1
Affiliation  

The structural features of work boots worn by underground coal miners affect comfort, foot motion and, in turn, loading of the plantar surface of miners' feet. Although shaft stiffness and sole flexibility appear to be boot design features that could influence perceived comfort and plantar pressures, no study has systematically altered these boot design features to truly understand how they affect these parameters. This study aimed to systematically investigate the effect of changes to shaft stiffness and sole flexibility on perceived comfort and plantar pressures when 20 males walked on a simulated gravel coal mining surface under four different work boot conditions. There were no significant effects of shaft stiffness or sole flexibility on perceived comfort. However, shaft stiffness and sole flexibility each significantly affected the plantar pressures generated under the medial midfoot, heel, middle metatarsals and hallux and, in combination, affected plantar pressures generated beneath the lateral midfoot, medial and lateral metatarsals and lesser toes. Participants preferred a boot with a flexible shaft combined with a stiff sole, citing properties such as fit, moveability, walking effort and support to explain why they perceived one boot as more comfortable than another. We therefore recommend that underground coal mining work boots should be designed to incorporate different flexibility and stiffness between the shaft and sole of the boot to optimise foot movement and, in turn, walking efficiency.

中文翻译:

在模拟的地下煤矿开采地面上行走时,竖井刚度和鞋底柔韧性对感觉舒适度和产生的足底压力的影响。

地下煤矿工人穿着的工作靴的结构特征会影响舒适度,脚部运动,进而影响矿工脚底面的负荷。尽管杆身刚度和鞋底柔韧性似乎是可能会影响感觉舒适度和足底压力的靴子设计特征,但尚无研究系统地更改这些靴子设计特征,以真正了解它们如何影响这些参数。这项研究旨在系统地研究在四个不同的工作靴条件下,当20名男性在模拟的砾石采煤地面上行走时,竖井刚度和鞋底柔韧性变化对感知的舒适度和足底压力的影响。杆身刚度或鞋底柔韧性对感觉舒适度没有明显影响。然而,杆身的刚度和唯一的柔韧性都显着影响了中足内侧,脚后跟,中and骨和拇趾下方产生的足底压力,并共同影响了中足外侧外侧,内media骨和外侧beneath骨以及较小脚趾下方产生的足底压力。参与者更喜欢带有柔性杆身和坚硬鞋底的靴子,并引用了诸如合身性,可移动性,步行力和支撑之类的特性来解释为什么他们认为一个靴子比另一个靴子更舒适。因此,我们建议地下采煤工作靴的设计应在靴筒的杆身和鞋底之间融入不同的柔韧性和刚度,以优化脚部运动并进而优化步行效率。足底外侧足中部,内侧和外侧beneath骨以及小脚趾下方产生的足底压力受到影响。参与者更喜欢带有柔性杆身和坚硬鞋底的靴子,并列举了诸如合身性,可移动性,步行努力和支撑等特性,以解释为什么他们认为一个靴子比另一个靴子更舒适。因此,我们建议地下采煤工作靴的设计应在靴筒的杆身和鞋底之间融入不同的柔韧性和刚度,以优化脚部运动并进而优化步行效率。影响足中外侧外侧,内侧和外侧meta骨下方以及脚趾较小处产生的足底压力。参与者更喜欢带有柔性杆身和坚硬鞋底的靴子,并列举了诸如合身性,可移动性,步行努力和支撑等特性,以解释为什么他们认为一个靴子比另一个靴子更舒适。因此,我们建议地下采煤工作靴的设计应在靴筒的杆身和鞋底之间融入不同的柔韧性和刚度,以优化脚部运动并进而优化步行效率。步行努力和支持以解释为什么他们认为一只靴子比另一只靴子舒服。因此,我们建议地下采煤工作靴的设计应在靴筒的杆身和鞋底之间融入不同的柔韧性和刚度,以优化脚部运动并进而优化步行效率。步行努力和支持以解释为什么他们认为一只靴子比另一只靴子舒服。因此,我们建议地下采煤工作靴的设计应在靴筒的杆身和鞋底之间融入不同的柔韧性和刚度,以优化脚部运动并进而优化步行效率。
更新日期:2020-01-10
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