Institute of Physical Activity and Sport Sciences, Cruzeiro do Sul University, Rua Galvão Bueno, 868, São Paulo, SP 01506-000, Brazil.
Institute of Physical Activity and Sport Sciences, Cruzeiro do Sul University, Rua Galvão Bueno, 868, São Paulo, SP 01506-000, Brazil.
Med Eng Phys. 2021 Sep;95:9-14. doi: 10.1016/j.medengphy.2021.07.002. Epub 2021 Jul 9.
This study examined the effects of the support surface (i.e., treadmill or ground) and the quantity of body weight unloading provided by a partial body weight support (PBWS) system on the spatiotemporal gait characteristics of individuals with stroke. Fifteen individuals, aged 57.2 ± 9.8 years, with chronic stroke walked on a treadmill and on the ground with 0%, 10%, and 20% of PBWS. Inertial sensors placed on the participants' feet registered 3-D acceleration and 3-D angular velocity during walking, and some gait parameters were calculated. Overall, individuals with stroke walked with shorter and slower strides and spent more time in contact with the support surface when walking on the treadmill compared to when walking on the ground. The duration of double limb support decreased when the percentage of PBWS increased. Stride length and speed were more variable in the paretic limb than in the non-paretic limb. Treadmill walking was more consistent and less similar to ordinary walking than walking on the ground. The gait pattern of individuals with stroke was modulated according to the support surface on which walking was performed, and the use of a PBWS system seems suitable to develop walking proficiencies on a daily basis.
本研究旨在探讨支撑面（即跑步机或地面）和部分体重支撑（PBWS）系统提供的体重卸载量对脑卒中患者时空步态特征的影响。15 名年龄 57.2±9.8 岁的慢性脑卒中患者分别在跑步机和地面上以 0%、10%和 20%的 PBWS 进行行走。将惯性传感器放置在参与者的脚上，在行走过程中记录三维加速度和三维角速度，并计算一些步态参数。总的来说，与在地面上行走相比，脑卒中患者在跑步机上行走时步幅更短、速度更慢，与支撑面接触的时间也更长。随着 PBWS 百分比的增加，双支撑阶段的持续时间减少。在偏瘫侧，步幅长度和速度的变化比在非偏瘫侧更大。与在地面上行走相比，跑步机行走更稳定，与普通行走的相似度更低。脑卒中患者的步态模式根据所进行的行走支撑面进行调节，使用 PBWS 系统似乎适合在日常生活中发展行走能力。
