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首页> 外文期刊>The European Journal of Neuroscience >Dual tasking, gait rhythmicity, and Parkinson's disease: Which aspects of gait are attention demanding?
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Dual tasking, gait rhythmicity, and Parkinson's disease: Which aspects of gait are attention demanding?

机译：双重任务，步态节律和帕金森氏病：需要注意哪些步态？

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Cognitive function and the performance of a secondary, dual task may affect certain aspects of gait, but the relationships between cognitive function and gait are not well understood. To better understand the motor control of gait and the relationship between cognitive function and gait, we studied cognitive function and the effects of different types of dual tasking on the gait of patients with Parkinson's disease (PD) and controls, contrasting measures of gait automaticity and rhythmicity with other features. Patients with idiopathic PD (n = 30; mean age 71.8 year) with moderate disease severity (Hoehn and Yahr Stage 2-3) were compared to age and gender-matched healthy controls (n = 28). Memory and executive function were also assessed. In both groups, gait speed decreased in response to dual tasking, in a parallel fashion. For the PD group only, gait variability increased compared to usual walking. Executive function was significantly worse in the PD group, while memory was not different in the two groups. Executive function measures were significantly correlated with gait variability during dual tasking, but not during usual walking. These findings demonstrate that regulation of gait variability and rhythmicity is apparently an automatic process that does not demand attention in healthy adults. In patients with PD, however, this ability becomes attention-demanding and worsens when subjects perform secondary tasks. Moreover, the associations between executive function and gait variability suggest that a decline in executive function in PD may exacerbate the effects of dual tasking on gait, potentially increasing fall risk.
机译：认知功能和次要双重任务的执行可能会影响步态的某些方面，但认知功能与步态之间的关系尚未得到很好的理解。为了更好地了解步态的运动控制以及认知功能与步态之间的关系，我们研究了认知功能以及不同类型的双重任务对帕金森病（PD）和对照患者的步态的影响，对比了步态自动化和具有其他功能的节奏感。将患有中度疾病严重程度（Hoehn和Yahr阶段2-3）的特发性PD（n = 30;平均年龄71.8岁）的患者与年龄和性别相匹配的健康对照组（n = 28）进行比较。记忆和执行功能也进行了评估。在两组中，步态速度以双重方式响应双重任务而降低。仅对于PD组，步态变异性比常规行走增加。 PD组的执行功能明显较差，而两组的记忆力无差异。在双重任务执行过程中，执行功能的测量值与步态变异性显着相关，但在正常行走过程中却没有。这些发现表明，步态变异性和节律性的调节显然是一个自动过程，不需要健康成年人的注意。然而，在PD患者中，这种能力变得引人注目，并且在受试者执行次要任务时恶化。此外，执行功能与步态变异性之间的关联表明，PD的执行功能下降可能会加剧双重任务对步态的影响，并有可能增加跌倒风险。

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