Shimizu Kotaro, Ihira Hikaru, Makino Keitaro, Kihara Yuriko, Itou Kazunari, Furuna Taketo
Graduate School of Health Sciences, Sapporo Medical University: South 1, West 17, Chuo-ku, Sapporo, Hokkaido 060-8556, Japan.
Epidemiology Division, Center for Public Health Sciences, National Cancer Center, Japan.
J Phys Ther Sci. 2018 Mar;30(3):419-423. doi: 10.1589/jpts.30.419. Epub 2018 Mar 2.
[Purpose] The purpose of this study was to determine the change of allocation of attention caused by a difference in gait phase and gait speed. We also determined the relationship between attentional demand and gait automaticity change caused by the gait speed alteration. [Subjects and Methods] Ten male participated. Participants were instructed to perform the probe reaction time (RT) task during treadmill walking in four different gait speed conditions (60%, 80%, 100%, and 120% of preferred speed). Walking ratio in each gait speed conditions were calculated, and RTs and walking ratios were compared in each gait speed condition and in the single-support and double-support gait phase. [Results] RTs were significantly delayed with decline of gait speed. Walking ratio was significantly decreased in proportion of decrement of gait speed. There was no difference of gait phase between single-support and double-support phase. [Conclusion] This study showed that relationship between attentional load and deficit of gait automaticity. While gait phase didn't influence attentional demand, and this result showed the characteristics of treadmill gait.
[目的] 本研究旨在确定步态阶段和步态速度差异引起的注意力分配变化。我们还确定了步态速度改变引起的注意力需求与步态自动性变化之间的关系。[对象与方法] 10名男性参与。参与者被要求在跑步机行走的四种不同步态速度条件（首选速度的60%、80%、100%和120%）下执行探测反应时间（RT）任务。计算每种步态速度条件下的步行比例，并比较每种步态速度条件以及单支撑和双支撑步态阶段的反应时间和步行比例。[结果] 反应时间随着步态速度的下降而显著延迟。步行比例随着步态速度的降低而显著降低。单支撑和双支撑阶段之间的步态阶段没有差异。[结论] 本研究表明了注意力负荷与步态自动性缺陷之间的关系。虽然步态阶段不影响注意力需求，且该结果显示了跑步机步态的特征。
