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024 7 _ |a 10.3389/fnagi.2019.00022
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100 1 _ |a Hobert, Markus A
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245 _ _ |a Progressive Gait Deficits in Parkinson's Disease: A Wearable-Based Biannual 5-Year Prospective Study.
260 _ _ |a Lausanne
|c 2019
|b Frontiers Research Foundation
264 _ 1 |3 online
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|b Frontiers Media SA
|c 2019-02-13
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520 _ _ |a Background: Gait changes occur during all Parkinson’s disease (PD) stages and wearable sensor-derived gait parameters may quantify PD progression. However, key aspects that may qualify quantitative gait parameters as progression markers in PD remain elusive.Objectives: Longitudinal changes in gait parameters from a lower-back sensor under convenient and challenging walking conditions in early- and mid-stage PD patients (E-PD, M-PD) compared to controls were investigated.Methods: Normal- and fast-pace parameters (step: number, time, velocity, variability) were assessed every 6 months for up to 5 years in 22 E-PD (<4 years baseline disease duration), 18 M-PD (>5 years) and 24 controls. Parameter trajectories and associations with MDS-UPDRS-III were tested using generalized estimating equations.Results: Normal-pace step number (annual change in E-PD: 2.1%, Time∗Group: p = 0.001) and step time variability (8.5%, p < 0.05) longitudinally increased in E-PD compared to controls (0.7%, -12%). For fast pace, no significant progression differences between groups were observed. Longitudinal changes in M-PD did not differ significantly from controls. MDS-UPDRS-III was largely associated with normal-pace parameters in M-PD.Conclusion: Wearables can quantify progressive gait deficits indicated by increasing step number and step time variability in E-PD. In M-PD, and for fast-pace, gait parameters possess limited potential as PD progression markers.
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542 _ _ |i 2019-02-13
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700 1 _ |a Nussbaum, Susanne
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700 1 _ |a Heger, Tanja
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700 1 _ |a Berg, Daniela
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700 1 _ |a Maetzler, Walter
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700 1 _ |a Heinzel, Sebastian
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773 1 8 |a 10.3389/fnagi.2019.00022
|b : Frontiers Media SA, 2019-02-13
|3 journal-article
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|t Frontiers in Aging Neuroscience
|v 11
|y 2019
|x 1663-4365
773 _ _ |a 10.3389/fnagi.2019.00022
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|t Frontiers in aging neuroscience
|v 11
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|x 1663-4365
856 4 _ |u https://www.frontiersin.org/articles/10.3389/fnagi.2019.00022/full
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LibraryCollectionCLSMajorCLSMinorLanguageAuthor
Marc 21