Tropea Peppino, Martelli Dario, Aprigliano Federica, Micera Silvestro, Monaco Vito
Annu Int Conf IEEE Eng Med Biol Soc. 2015;2015:5291-4. doi: 10.1109/EMBC.2015.7319585.
The aim of this study was to analyze the modifications of temporal parameters during slipping-like perturbations associated both with aging and perturbation intensities. Twelve participants equally distributed from two age groups (elderly and young) were recorded while, during steady locomotion, managing unexpected slipping-like perturbations, in forward direction, at different intensity and amplitude of foot shift. Two metrics were extrapolated from the analysis of the ground reaction force supplied by ad hoc platform aimed at destabilizing the balance control. The results indicated that the analyzed timing variables, both for elderly and young, are strongly modified by intensity of the perturbation, but only slight altered by the amplitude. Concerning the comparison about the two groups, elderly people seem to have slower reactive response than young subjects. These findings support further investigations in order to gain a better understanding of fall dynamics in elderly people.
本研究的目的是分析与衰老和扰动强度相关的类滑倒扰动期间时间参数的变化。在两个年龄组（老年人和年轻人）中平均分配的12名参与者，在稳定行走过程中，在向前方向上以不同的足部移动强度和幅度应对意外的类滑倒扰动时被记录下来。从专门用于破坏平衡控制的平台提供的地面反作用力分析中推断出两个指标。结果表明，所分析的时间变量，无论是老年人还是年轻人，都受到扰动强度的强烈影响，但仅受到幅度的轻微影响。关于两组之间的比较，老年人似乎比年轻受试者的反应速度更慢。这些发现支持进一步的研究，以便更好地理解老年人的跌倒动态。
