Matsuno Satoshi, Yoshiike Takuya, Yoshimura Atsushi, Morita Sachiyo, Fujii Yusuke, Honma Motoyasu, Ozeki Yuji, Kuriyama Kenichi
J Aging Phys Act. 2021 Oct 1;29(5):761-770. doi: 10.1123/japa.2020-0130. Epub 2021 Feb 10.
Although standing plantar perception training (SPPT) may improve standing postural stability, the underlying neural mechanisms remain unclear. The authors investigated the relationship between regional cortical responses to SPPT using a balance pad and training outcomes in 32 older participants (mean ± SD:72.2 ± 6.0, range:60-87). Regional cortical activity was measured in the bilateral supplementary motor area, primary sensorimotor area, and parietal association area using near-infrared spectroscopy. Postural sway changes were compared before and after SPPT. Changes in two-point plantar discrimination and regional cortical activity during SPPT, associated with standing postural stability improvements, were examined using multiple regression and indicated improved standing postural stability after SPPT (p < .0001). Changes in right parietal association area activity were associated with standing postural stability improvements while barefoot. Overall, the results suggest that right parietal association area activation during SPPT plays a crucial role in regulating standing postural stability and may help develop strategies to prevent older adults from falling.
尽管站立足底感知训练（SPPT）可能会改善站立姿势稳定性，但其潜在的神经机制仍不清楚。作者调查了32名老年参与者（平均±标准差：72.2±6.0，范围：60 - 87岁）使用平衡垫进行SPPT时区域皮层反应与训练结果之间的关系。使用近红外光谱法测量双侧辅助运动区、初级感觉运动区和顶叶联合区的区域皮层活动。比较了SPPT前后的姿势摆动变化。使用多元回归分析了SPPT期间与站立姿势稳定性改善相关的两点足底辨别和区域皮层活动的变化，结果表明SPPT后站立姿势稳定性得到改善（p <.0001）。右顶叶联合区活动的变化与赤脚时站立姿势稳定性的改善有关。总体而言，结果表明SPPT期间右顶叶联合区的激活在调节站立姿势稳定性方面起着关键作用，可能有助于制定预防老年人跌倒的策略。
