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. 2018 Oct 5;15:88. doi: 10.1186/s12984-018-0429-0

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© The Author(s). 2018

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 3 — Three AWVR exercises used for this study. First-person user view is shown. a Tea Stir. Spoons (foreground) melt when used to stir the hot tea. b Crabby Cookies. Cookies morph into crabs that run around the table and must be “captured”. c Bottomless Sherry. Sherry glass must be repeatedly lifted to “drink” and set down on the table to refill