Preliminary Evidence That Design Fluency Is Related to Dual-Task Treadmill Gait Variability in Healthy Adults.

IF 1.6 Q3 CLINICAL NEUROLOGY NeuroSci Pub Date : 2024-09-12 eCollection Date: 2024-09-01 DOI:10.3390/neurosci5030026
Christopher I Higginson, Morgan K Bifano, Kelly M Seymour, Rachel L Orr, Kurt M DeGoede, Jill S Higginson
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Abstract

Evidence supporting a link between gait and cognition is accumulating. However, the relation between executive functioning and spatiotemporal gait parameters has received little attention. This is surprising since these gait variables are related to falls. The goal of this preliminary study was to determine whether performance on measures of inhibition, reasoning, and fluency is related to variability in stride length and step width during dual-task treadmill walking in a sample of healthy adults. Nineteen healthy adults averaging 40 years of age were evaluated. Results indicated that processing speed was reduced, t(18) = 6.31, p = 0.0001, step width increased, t(18) = -8.00, p = 0.0001, and stride length decreased, t(18) = 3.06, p = 0.007, while dual tasking, but variability in gait parameters did not significantly change, consistent with a gait/posture-first approach. As hypothesized, better performance on a visual design fluency task which assesses cognitive flexibility was associated with less dual-task stride length variability, rs (17) = -0.43, p = 0.034, and step width variability, r = -0.56, p = 0.006. The results extend previous findings with older adults walking over ground and additionally suggest that cognitive flexibility may be important for gait maintenance while dual tasking.

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初步证据表明,设计流畅性与健康成年人的双任务跑步机步态变异性有关。
支持步态与认知之间存在联系的证据正在不断积累。然而,执行功能与时空步态参数之间的关系却很少受到关注。这一点令人惊讶,因为这些步态变量与跌倒有关。这项初步研究的目的是确定在健康成年人样本中进行双任务跑步机行走时,抑制、推理和流畅性测量的表现是否与步长和步幅的变化有关。19 名平均年龄为 40 岁的健康成年人接受了评估。结果表明,在执行双重任务时,处理速度降低(t(18) = 6.31,p = 0.0001),步幅增加(t(18) = -8.00,p = 0.0001),步长减少(t(18) = 3.06,p = 0.007),但步态参数的变异性没有显著变化,这与步态/姿势优先的方法一致。正如假设的那样,在评估认知灵活性的视觉设计流畅性任务中表现较好,与较少的双重任务步长变异性(rs (17) = -0.43,p = 0.034)和步宽变异性(r = -0.56,p = 0.006)有关。这些结果扩展了之前对老年人在地面上行走的研究结果,并进一步表明认知灵活性对于在双重任务中保持步态可能非常重要。
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