Biazus-Sehn Luiz Fernado, Baptista Rafael Reimann, Mestriner Régis Gemerasca, Loss Bianca Pacheco, Aldabe Daniela, Stigger Felipe de Souza
Postgraduate Program in Rehabilitation Sciences, Federal University of Health Sciences of Porto Alegre, Porto Alegre, Rio Grande do Sul,Brazil.
School of Health and Life Sciences, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul,Brazil.
J Aging Phys Act. 2022 Jun 1;30(3):411-420. doi: 10.1123/japa.2021-0099. Epub 2021 Sep 11.
Real-world walking requires shifting attention from different cognitive demands to adapt gait. This study aims to evaluate the effect of dual tasking on spatiotemporal gait parameters of older adults. Participants were asked to perform a primary complex single-walking task, consisting of a fast-paced linear and a curved gait. Primary task was performed separately and simultaneously with different motor and cognitive secondary tasks. Spatiotemporal gait parameters, walk ratio, and walk stability ratio were measured. Apart from stride length, which stood relatively unchanged, gait speed and cadence were strongly affected by cognitive dual tasking. Cadence seems to be the most impacted by dual tasking during curved gait as it combines challenges of both primary and secondary tasks. Also, during curved phase, walking ratio was significantly lower and stability ratio was greater demonstrating that participants adopted a cautious gait where maintenance of stability took preference over efficiency.
现实世界中的行走需要将注意力从不同的认知需求中转移出来以适应步态。本研究旨在评估双重任务对老年人时空步态参数的影响。参与者被要求执行一项主要的复杂单步行任务，包括快节奏直线步态和曲线步态。主要任务分别进行，并与不同的运动和认知次要任务同时进行。测量了时空步态参数、步幅比和行走稳定率。除步幅相对保持不变外，步态速度和步频受认知双重任务的影响很大。在曲线步态中，步频似乎受双重任务的影响最大，因为它结合了主要任务和次要任务的挑战。此外，在曲线阶段，行走比显著降低，稳定率更高，这表明参与者采用了谨慎的步态，在这种步态中，保持稳定性比效率更受重视。
