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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/).
Breathing patterns of an adult male volunteer in (a) sitting, (b) standing, and (c) lying scenarios. (d) The comparison of the breathing patterns (standing) for two male volunteers, the time scales are synchronized by the first deep breath for each volunteer.