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Assessment of Postural Stability using Inertial Measurement Unit on Inclined Surfaces in Healthy Adults

机译：健康成人斜面上的使用惯性测量单元姿势稳定性的评估

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摘要

Fatal and nonfatal falls in the construction domain remain a significant issue in today’s workforce. The roofing industry in particular, annually ranks amongst the highest in all industries. Exposure to an inclined surface, such as an inclined roof surface, has been reported to have adverse effects on postural stability. The purpose of this preliminary study was to investigate the intra-individual differences in stability parameters on both inclined and level surfaces. Postural Stability (PS) and Limit of Stability (LOS) were assessed in seven healthy subjects (aged 25-35 years) on inclined and level surfaces using embedded force plates and an Inertial Measurement Unit (IMU). Four 90-second trials were collected on the inclined surface in distinctive positions: (1) Toes raised 20° above heel; (2) Heels raised 20° above toes (3); Transverse direction with dominant foot inverted at a lower height; (4) Transverse direction with non-dominant foot inverted at a lower height. Limit of Stability was evaluated by the two measurement devices in all four directions and margin of safety was quantified for each individual on both surfaces. The results reveal significant differences in postural stability between the flat surface condition and the inclined surface condition when subject was positioned perpendicular to the surface slope with one foot descended below the other; specifically, a significant increase was identified when visual support was interrupted. The findings lend support to the literature and will assist in future research regarding early detection of postural imbalance and preventative measures to reduce fall risks in professions where workers are consistently exposed to inclined surfaces.
机译：在当今建筑领域，致命和非致命的跌倒仍然是一个重要的问题。尤其是屋顶行业，每年在所有行业中名列前茅。据报道，暴露于倾斜表面（例如倾斜的屋顶表面）会对姿势稳定性产生不利影响。这项初步研究的目的是调查倾斜表面和水平表面上稳定性参数的内部差异。使用嵌入式测力板和惯性测量单元（IMU）在倾斜和水平表面上的七个健康受试者（年龄在25-35岁之间）中评估了姿势稳定性（PS）和稳定性极限（LOS）。在倾斜表面上不同的位置上进行了四次90秒的试验：（1）脚趾抬高到脚跟上方20°； （2）脚跟高出脚趾20度（3）；横向，优势脚在较低的高度处倒转； （4）横向，非优势脚在较低的高度处倒转。通过两个测量设备在所有四个方向上评估了稳定性极限，并对每个个体在两个表面上的安全裕度进行了量化。结果表明，当受试者垂直于表面坡度放置时，一只脚下降到另一只脚下方时，在平坦表面状态和倾斜表面状态之间的姿势稳定性存在显着差异。具体来说，当视觉支持中断时，可以发现明显增加。这些发现为文献提供了支持，并将有助于有关姿势不平衡的早期检测和预防措施的未来研究，以减少工人始终暴露于倾斜表面的职业中的跌倒风险。

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