Biomechanics Laboratory, School of Physical Education and Sport, University of São Paulo, Brazil; Biomechatronics Laboratory, Department of Mechatronics and Mechanical Systems, Escola Politécnica of the University of São Paulo, Brazil.
Biomechanics Laboratory, School of Physical Education and Sport, University of São Paulo, Brazil.
Exp Gerontol. 2022 Oct 15;168:111928. doi: 10.1016/j.exger.2022.111928. Epub 2022 Aug 17.
Postural control relies on three principal sensory systems: vision, vestibular and proprioceptive; that are affected by aging. When performing a cognitive task concomitantly with a motor task, those sensory impairments lead to even greater deleterious effects on balance. We aimed to study the effects of a sensory aid (a light touch) on a dual task paradigm and sought to understand the different responses on balance due to aging. Fifty healthy and highly physical active women were divided in two groups: young (N = 25, 24.2 ± 4.0 years) and older adults (N = 25, 67.3 ± 4.2 years). In a random and balanced order, all participants performed five tasks: Stroop test while seated (Seated); Stroop test while standing quiet (ST); Standing quiet (BL); Standing quiet with a haptic input (LT); and Stroop test with a haptic input while standing quiet (SL). In the Stroop test, older women committed more errors (50 vs 11 errors, p < 0.001) and had higher reaction time (1.001 ± 0.191 vs 0.699 ± 0.081 s, p < 0.001). The haptic input (LT) reduced all body sway parameters, in both groups, regardless the condition. This means that postural control under a dual task paradigm (ST) deleterious effect can be mitigated by a haptic input.
视觉、前庭和本体感觉；这些系统会随着年龄的增长而受到影响。当同时执行认知任务和运动任务时，这些感觉障碍会对平衡产生更大的不利影响。我们旨在研究感觉辅助（轻触）对双重任务范式的影响，并试图了解由于年龄增长导致平衡反应的不同。50 名健康且高度活跃的女性被分为两组：年轻组（N=25，24.2±4.0 岁）和老年组（N=25，67.3±4.2 岁）。所有参与者以随机和平衡的顺序进行了五项任务：静坐时的斯特鲁普测试（Seated）；站立时安静的斯特鲁普测试（ST）；安静站立（BL）；带有触觉输入的安静站立（LT）；以及安静站立时带有触觉输入的斯特鲁普测试（SL）。在斯特鲁普测试中，老年女性犯的错误更多（50 个与 11 个错误，p<0.001），反应时间更长（1.001±0.191 与 0.699±0.081 s，p<0.001）。触觉输入（LT）减轻了两组在所有姿势摆动参数方面的影响，无论条件如何。这意味着，双重任务范式（ST）下的姿势控制的有害影响可以通过触觉输入来减轻。
