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. 2021 Feb 22;21(4):1502. doi: 10.3390/s21041502

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© 2021 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Hand counts for hand-only and arm-only exercises performed in the laboratory plotted as a function of exercise progression. Subjects were either impaired (due to hemiparesis after a stroke) or unimpaired. Two subjects in the impaired group could not perform the hand-only exercise without assistance of their unimpaired hand and are presented with the dashed lines. The impaired, assisted subjects had an average count accuracy of 82% for hand-only exercise. The remainder of the impaired subjects (n = 7) performed the exercise without assistance and had an accuracy of 78% for the hand-only exercise. Unimpaired subjects (n = 8) had a count accuracy of 95% for the hand-only exercise. Perfect counting for the hand-only exercise would be a line with a slope of 1. Only unimpaired subjects performed the arm-only exercise with 6% of crosstalk. Shaded areas show 1 SD.