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dc.contributor.authorIhlen, Espen Alexander F.
dc.contributor.authorWeiss, A
dc.contributor.authorHelbostad, Jorunn L.
dc.contributor.authorHausdorff, Jeffrey M
dc.identifier.citationBioMed Research International. 2015, 402596en_US
dc.description.abstractThe present study compares phase-dependent measures of local dynamic stability of daily life walking with 35 conventional gait features in their ability to discriminate between community-dwelling older fallers and nonfallers. The study reanalyzes 3D-acceleration data of 3-day daily life activity from 39 older people who reported less than 2 falls during one year and 31 who reported two or more falls. Phase-dependent local dynamic stability was defined for initial perturbation at 0%, 20%, 40%, 60%, and 80% of the step cycle. A partial least square discriminant analysis (PLS-DA) was used to compare the discriminant abilities of phase-dependent local dynamic stability with the discriminant abilities of 35 conventional gait features. The phase-dependent local dynamic stability λ at 0% and 60% of the step cycle discriminated well between fallers and nonfallers (AUC = 0.83) and was significantly larger () for the nonfallers. Furthermore, phase-dependent λ discriminated as well between fallers and nonfallers as all other gait features combined. The present result suggests that phase-dependent measures of local dynamic stability of daily life walking might be of importance for further development in early fall risk screening tools.en_US
dc.publisherHindawi Publishing Corporationen_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.titleThe Discriminant Value of Phase-Dependent Local Dynamic Stability of Daily Life Walking in Older Adult Community-Dwelling Fallers and Nonfallersen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.source.journalBioMed Research Internationalen_US
dc.description.localcodeCopyright © 2015 Espen A. F. Ihlen et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.en_US

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