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. 2013 Oct 20;1(5):e00108. doi: 10.1002/phy2.108

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© 2013 The Authors. Physiological Reports published by Wiley Periodicals, Inc. on behalf of the American Physiological Society and The Physiological Society

Re-use of this article is permitted in accordance with the Creative Commons Deed, Attribution 2.5, which does not permit commercial exploitation.

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Ratios of antiphases (ANTI: 180 ± 60°), in-phases (IN: 0 ± 60°), and intermediate phases (MED: other phases). (A) same directional tasks (ISO) and (B) opposite directional tasks (OPP). Black, gray, and white bars are AC, PT, and PnT, respectively. Error bars indicate the standard deviation. Significant difference between the tasks are expressed with asterisk marks (*P < 0.05; **P < 0.01; ***P < 0.001). ISO, the same direction; OPP, the opposite direction; AC, active coordination; PT, passive tracking; PnT, passive nontracking.