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. 2018 Nov 14;9:1618. doi: 10.3389/fphys.2018.01618

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Copyright © 2018 Abdallah, Smith, Wilkinson-Maitland, Li, Bourbeau and Jensen.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Effects of abdominal binding (AB) vs. control (CTRL) on (A) the root mean square of the crural diaphragm electromyogram (EMGdi,rms), (B) transdiaphragmatic pressure (Pdi), (C) esophageal pressure (Pes), (D) tidal Pdi swing (Pdi,tidal) vs. EMGdi,rms, (E) gastric pressure (Pga) and (F) the quotient of Pdi,tidal to EMGdi,rms (an index of diaphragmatic neuromuscular efficiency) responses during constant-load cycle endurance exercise testing at 75% of peak incremental power output in adults with chronic obstructive pulmonary disease (n = 20). Dashed lines in panels B,C,E denote peak tidal expiratory Pdi, Pes, and Pga, respectively. Data points are mean ± SEM values at rest, at standardized submaximal times during exercise (including isotime of 5.1 ± 1.0 min), and at peak exercise. ^∗p < 0.05 vs. CTRL.