Publication: Characteristics of Voluntary-induced Stepping Response in Persons with Stroke compared with those of healthy Young and Older Adults
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Issued Date
2020
Resource Type
File Type
application/pdf
ISSN
9666362
Other identifier(s)
2-s2.0-85090213982
Rights Holder(s)
Scopus
Bibliographic Citation
Gait and Posture. Vol 82, (2020), p.75-82
Suggested Citation
Chayasit P., Hollands K., Hollands M., Boonsinsukh R. Characteristics of Voluntary-induced Stepping Response in Persons with Stroke compared with those of healthy Young and Older Adults. Gait and Posture. Vol 82, (2020), p.75-82. doi:10.1016/j.gaitpost.2020.08.125 Retrieved from: https://hdl.handle.net/20.500.14740/4374
Author(s)
Abstract
Background: Impairment of protective steps to recover balance from external perturbation is evident after stroke. Voluntary-induced stepping response (VSR) can be used to practice protective steps by instructing an individual to voluntarily lean their whole body forward until they perceive a loss of balance and automatically induce a step. However, to improve protective stepping performance, detailed characteristics of VSR in healthy persons are required. Research question: What is the difference in VSR between healthy and persons with stroke? Methods: An observational study was conducted in 30 participants, (10 young, 10 older, and 10 persons with stroke). All participants performed VSR for 10 trials. Step length, step width, step duration, CoM position, CoM velocity, trunk-hip displacement, and strategies of response were recorded using a motion capture system and analysed using Matlab software. Statistical analysis was performed using One-way ANOVA and Chi-square. Results: On average, participants with stroke had shorter step lengths and step durations than young and older adults. Step width of older adults and participants with stroke was wider than that of young adults (p < 0.05). While multiple steps and losing balance were reported more frequently in participants with stroke than the others, the percentage of trials in which participants grasped the handrails was not significantly different between older adults and participants with stroke. CoM position, CoM velocity, and trunk-hip displacement at foot liftoff were significantly smaller in older adults and participants with stroke than young adults (p < 0.05). Participants with stroke tended to use trunk bending rather than trunk leaning strategies to generate VSR in contrast to healthy participant. The prevalence of the trunk bending strategy was also greater in older adults than young adults. Significance: Values obtained from healthy groups can be used as guidelines to set realistic goals during VSR training to improve protective steps in patients with stroke. © 2020 Elsevier B.V.