Footsteps and walking trajectories during the Timed Up and Go test in young, older, and Parkinson’s disease subjects
Footsteps and walking trajectories during the Timed Up and Go test in young, older, and Parkinson’s disease subjects
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年轻、老年和帕金森病受试者在 Timed Up and Go 测试期间的脚步和行走轨迹
DOI：
10.1016/j.gaitpost.2021.06.021
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Takahashi Masaki
中科院分区：
文献类型：
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作者：
Okada Yohei;Yorozu Ayanori;Fukumoto Takahiko;Morioka Shu;Shomoto Koji;Aoyama Tomoki;Takahashi Masaki
背景：帕金森病（PD）患者和老年人在计时起走测试（Timed Up and Go test， TUG）中的脚步和行走轨迹及其与转弯时时空步态参数的关系尚不清楚。研究问题：研究PD、健康老年人（HO）和健康青年（HY）受试者在转弯过程中的脚步、行走轨迹和时空参数，以及转弯过程中脚步或行走轨迹参数与时空参数的关系。方法PD组26例，HO组20例，HY组20例。他们以自己选择的速度进行TUG，并通过使用激光距离传感器测量腿部的二维距离数据的系统评估前进，转弯和返回阶段的时空参数以及脚步和行走轨迹参数。每只脚的脚的位置被测量为在脚接触和脚离开之间的腿部运动速度达到最小时的估计位置。我们计算了从TUG标记到脚步的最小距离和从起点到脚步的最大前方距离。采用非线性行走法计算步长。结果PD组在各阶段的步长均明显缩短。PD组标记物到脚步的最小距离显著小于HO组，且仅与转相步长呈显著正相关。HO受试者从起点到脚步的最大前路距离显著大于PD和HY受试者，且与时空参数无关。本研究表明PD患者在转弯时靠近TUG标记，这种转弯策略可能与转弯时的步长减少有关。这些发现有助于提供指导，防止在转弯时步长减少的夸大。
BackgroundFootsteps and walking trajectories during the Timed Up and Go test (TUG), and their relationships with spatiotemporal gait parameters during turning in people with Parkinson’s disease (PD) and older people have not been clarified.Research questionWe investigated the footsteps, walking trajectories, and spatiotemporal parameters during the TUG in PD, healthy older (HO), and healthy young (HY) subjects and the associations between the parameters of footsteps or walking trajectories and the spatiotemporal parameters during turning.MethodsTwenty-six PD, 20 HO, and 20 HY subjects participated. They performed the TUG at self-selected speed and underwent evaluations of spatiotemporal parameters in the forward, turning, and return phases and parameters of footsteps and walking trajectories by a system using laser range sensors to measure the two-dimensional distance data of the legs. Foot placement for each foot was measured as the estimated position when the leg speed of movement reached the minimum between foot-contact and foot-off. We calculated the minimum distance from a TUG marker to footsteps and the maximum anterior distance from the start to the footsteps. Step length was calculated using a method for non-linear walking.ResultsThe PD subjects showed significantly smaller step lengths in all phases. The minimum distance from the marker to the footsteps in PD subjects was significantly smaller than in HO subjects and was significantly positively correlated only with the turning-phase step length. The maximum anterior distance from the start to footsteps in HO subjects was significantly larger than in PD and HY subjects and was not correlated with any spatiotemporal parameters.SignificanceThis study demonstrated that people with PD turn close to the TUG marker, and this turning strategy may be associated with the decreased step length when turning. These findings could help in providing instructions which prevent the exaggeration of step-length reduction when turning.