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. 2015 Oct 28;23:83. doi: 10.1186/s13049-015-0164-5

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© Kwon et al. 2015

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 — Ppl (Intrapleural pressure) and Paw (airway pressure) with each intervention. a. Ppl mean; b. Ppl decompression; c. Paw mean; d. Paw decompression. Error bar represents SEM. * denotes p < 0.05 for STD vs. (ACD, ACD ITD, ACD ITPR). + denotes p < 0.05 for ACD vs. (ACD ITD, ACD ITPR). § denotes p < 0.05 for ACD-ITD vs. ACD-ITPR. P values for linear trend were all < 0.05. STD, standard; ACD, active compression decompression, ITD, impedance threshold device; ITPR, intrathoracic pressure regulator