Park Ga Young, Yeo Sang Seok, Kwon Young Chan, Song Hyeong Seok, Lim Yu Jin, Ha Yu Mi, Han Seung Hee, Oh Seunghue
Department of Physical Therapy, Graduate School, Dankook University, Dandae-ro, Dongnam-gu, Cheonan-si, Chungnam, 330-714, Korea.
Department of Physical Therapy, College of Health Sciences, Dankook University, 119, Dandae-ro, Dongnam-gu, Cheonan-si, Chungnam, 330-714, Korea.
Healthcare (Basel). 2020 Feb 3;8(1):30. doi: 10.3390/healthcare8010030.
This study investigates the effects of a cognitive task while walking on a slope or a flat surface on gait parameters and gait variability in young adults. The participants consisted of thirty healthy young subjects. They were instructed to walk on a slope or on a flat surface while performing or not performing a cognitive task, which involved speaking a four-syllable word in reverse. A wearable inertia measurement unit (IMU) system was used to measure spatiotemporal parameters and gait variability. Flat gait (FG) while performing the cognitive task (FGC) and uphill gait (UG) while performing the cognitive task (UGC) significantly altered stride times, gait speeds, and cadence as compared with FG and UG, respectively. Downhill gait (DG) while performing the cognitive task (DGC) caused no significant difference as compared with DG. Gait variability comparisons showed no significant difference between UGC and UG or between FGC and FG, respectively. On the other hand, variabilities of stride times and gait speeds were significantly greater for DGC than DG. FGC and UGC induce natural changes in spatiotemporal gait parameters that enable the cognitive task to be performed safely. DGC should be regarded as high complexity tasks involving greater gait variability to reduce fall risk.
本研究调查了年轻人在斜坡或平面上行走时执行认知任务对步态参数和步态变异性的影响。参与者包括30名健康的年轻受试者。他们被要求在斜坡或平面上行走，同时执行或不执行一项认知任务，该任务包括倒着说一个四个音节的单词。使用可穿戴惯性测量单元（IMU）系统来测量时空参数和步态变异性。与平面步态（FG）和上坡步态（UG）相比，执行认知任务时的平面步态（FGC）和执行认知任务时的上坡步态（UGC）分别显著改变了步幅时间、步态速度和步频。执行认知任务时的下坡步态（DGC）与下坡步态（DG）相比没有显著差异。步态变异性比较显示，UGC与UG之间以及FGC与FG之间分别没有显著差异。另一方面，DGC的步幅时间和步态速度变异性明显大于DG。FGC和UGC会引起时空步态参数的自然变化，从而使认知任务能够安全执行。DGC应被视为涉及更大步态变异性的高复杂性任务，以降低跌倒风险。
