Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.22/7390
Título: Reliability of Two Methods for Identifying the Postural Phase of Gait Initiation in Healthy and Post-stroke Subjects
Autor: Sousa, Andreia S. P.
Silva, Augusta
Santos, Rubim
Palavras-chave: gait initiation
postural control phase
stroke
reliability
centre of pressure
Data: Out-2015
Editora: Human Kinetics Journals
Citação: Sousa, A.S., A. Silva, and R. Santos, Reliability of Two Methods for Identifying the Postural Phase of Gait Initiation in Healthy and Poststroke Subjects. J Appl Biomech 2015; 31(5): 349-56.
Resumo: This study aims to compare two methods of assessing the postural phase of gait initiation as to intrasession reliability, in healthy and post-stroke subjects. As a secondary aim, this study aims to analyse anticipatory postural adjustments during gait initiation based on the centre of pressure (CoP) displacements in post-stroke participants. The CoP signal was acquired during gait initiation in fifteen post-stroke subjects and twenty-three healthy controls. Postural phase was identified through a baseline-based method and a maximal displacement based method. In both healthy and post-stroke participants higher intra-class correlation coefficient and lower coefficient of variation values were obtained with the baseline-based method when compared to the maximal displacement based method. Post-stroke participants presented decreased CoP displacement backward and toward the first swing limb compared to controls when the baseline-based method was used. With the maximal displacement based method, there were differences between groups only regarding backward CoP displacement. Postural phase duration in medial-lateral direction was also increased in post-stroke participants when using the maximal displacement based method. The findings obtained indicate that the baseline-based method is more reliable detecting the onset of gait initiation in both groups, while the maximal displacement based method presents greater sensitivity for post-stroke participants.
Peer review: yes
URI: http://hdl.handle.net/10400.22/7390
DOI: 10.1123/jab.2014-0222
ISSN: 1065-8483 (Print), 1543-2688 (Online)
Versão do Editor: http://journals.humankinetics.com/jab-back-issues/jab-volume-31-issue-5-october/reliability-of-two-methods-for-identifying-the-postural-phase-of-gait-initiation-in-healthy-and-poststroke-subjects
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