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. 2018 Dec 12;9:1096. doi: 10.3389/fneur.2018.01096

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Copyright © 2018 Geerse, Roerdink, Marinus and van Hilten.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Pearson's correlation coefficients between clinical test scores (x-axis; i.e., Timed Up-and-Go test [TUG], 10-m walking test at comfortable and maximum walking speed [10MWT-CWS, 10MWT-MWS], Tinetti Balance Assessment [TBA], 7-item Berg Balance Scale [BBS] and Functional Reach Test [FRT]) and Interactive Walkway outcome measures (y-axis; i.e., gait characteristics of unconstrained walking [UW1-7], outcome measure of adaptive walking [OA1-3, SSS1-3, GDS1-4, NWW1-3, SA1-4, S1-2, T1-3], and outcome measures of dual-task walking [DT1-4]) in people with Parkinson's disease. The order of the outcome measures on the axes is in agreement with Table 3. The dotted black lines separate the three types of Interactive Walkway tasks (i.e., unconstrained walking, adaptive walking, and dual-task walking). The colorbar provides a visualization of the strength and direction of the correlation.