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Effects of external light load on posture and foot pressure distribution in young adults: A pilot study
International Journal of Industrial Ergonomics ( IF 3.1 ) Pub Date : 2021-02-09 , DOI: 10.1016/j.ergon.2021.103102
Magdalena Zawadka , Maciej Kochman , Miroslaw Jablonski , Piotr Gawda

Holding an asymmetrical load, like a rucksack, grocery bag, or travel backpack, is a part of daily and occupational activities. This pilot study was aimed to determine the effects of light, asymmetrical, handheld load on the body posture and foot pressure distribution in young adults. Thirteen young volunteers, free of any injury or pain, took part in the study (aged 21.53 ± 1.10 years). All the study participants were right-handed. An additional load (4 kg, placed in the rucksack) was asymmetrically held in each hand while standing still. For evaluation of the posture and foot pressure distribution, the investigation focused on three positions, i.e., no-load, a rucksack in the right hand, a rucksack in the left hand. We used a surface topography system and force platform for evaluation of the body posture and foot pressure examination, respectively. The results showed that the main changes in the body posture caused by an external load application manifested in trunk imbalance. The trunk was shifted in the direction opposite to the load. Trunk imbalance changes were statistically significant in all three comparisons (p = 0.001). Interestingly, changes in the rotations and lateral deviation seem to be dependent on the hand dominance. Greater foot pressure was observed on the loaded limb (p < 0.01), and highly significant differences were noted between the left and right foot in both loaded postures (p < 0.001). Further research needs to be done to check if lateralization is connected with body posture while holding an external load.



中文翻译:

外部光负载对年轻人的姿势和脚部压力分布的影响:一项初步研究

日常工作和职业活动的一部分是保持不对称的负载,例如背包,食品袋或旅行背包。这项初步研究旨在确定轻,不对称的手持负载对年轻人的身体姿势和足部压力分布的影响。十三名年轻志愿者,没有任何伤害或疼痛,参加了该研究(年龄21.53±1.10岁)。所有的研究参与者都是右撇子。站立不动时,每只手不对称地握着一个额外的负载(4公斤,放在背包中)。为了评估姿势和足部压力分布,研究集中在三个位置,即空载,右手背囊,左手背囊。我们使用了表面地形系统和测力平台来评估身体姿势和足部压力检查,分别。结果表明,外力负荷引起的主要姿势变化是躯干失衡。行李箱向与负载相反的方向移动。在所有三个比较中,躯干失衡变化均具有统计学意义(p = 0.001)。有趣的是,旋转和侧向偏差的变化似乎取决于手的优势。在负载的肢体上观察到较大的足部压力(p <0.01),并且在两种负载姿势下,左脚和右脚之间都存在显着差异(p <0.001)。需要做进一步的研究,以在保持外部负荷的同时检查侧倾是否与身体姿势有关。行李箱向与负载相反的方向移动。在所有三个比较中,躯干失衡变化均具有统计学意义(p = 0.001)。有趣的是,旋转和横向偏差的变化似乎取决于手的优势。在负载的肢体上观察到较大的足部压力(p <0.01),并且在两种负载姿势下,左脚和右脚之间都存在显着差异(p <0.001)。需要做进一步的研究,以在保持外部负荷的同时检查侧倾是否与身体姿势有关。行李箱向与负载相反的方向移动。在所有三个比较中,躯干失衡变化均具有统计学意义(p = 0.001)。有趣的是,旋转和侧向偏差的变化似乎取决于手的优势。在负载的肢体上观察到较大的足部压力(p <0.01),并且在两种负载姿势下,左脚和右脚之间都存在显着差异(p <0.001)。需要做进一步的研究,以在保持外部负荷的同时检查侧倾是否与身体姿势有关。在负载的肢体上观察到较大的足部压力(p <0.01),并且在两种负载姿势下,左脚和右脚之间都存在显着差异(p <0.001)。需要做进一步的研究,以在保持外部负荷的同时检查侧倾是否与身体姿势有关。在受力肢体上观察到较大的足部压力(p <0.01),并且在两种受力姿势下,左脚和右脚之间都存在显着差异(p <0.001)。需要做进一步的研究,以在保持外部负荷的同时检查侧倾是否与身体姿势有关。

更新日期:2021-02-10
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