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. 2015 May 1;15:47. doi: 10.1186/s12890-015-0043-x

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© Azouz et al.; licensee BioMed Central. 2015

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. 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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Individual peak inspiratory flow rates (A), maximum pressure change (ΔP) (B) and inhalation volume (C) before enhanced training. In graph (A), the horizontal dotted line represents 30 L/min (minimal flow for adequate drug delivery).