title: Reply to Engel and Vemulpad.
authors: National and Kapodistrian University of Athens, Department of Physical Education and Sports Sciences, Athens, Greece; National and Kapodistrian University of Athens, 1st Department of Critical Care Medicine, Evangelismos Hospital, Athens, Greece; Technological Educational Institute of Central Greece, Department of Physiotherapy, Lamia, Greece; and.
authors: Eleni A
authors: EA
authors: Kortianou
authors: Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano, Italy.
authors: Andrea
authors: A
authors: Aliverti
authors: National and Kapodistrian University of Athens, Department of Physical Education and Sports Sciences, Athens, Greece;
authors: Zafeiris
authors: Z
authors: Louvaris
authors: National and Kapodistrian University of Athens, Department of Physical Education and Sports Sciences, Athens, Greece;
authors: Maroula
authors: M
authors: Vasilopoulou
authors: National and Kapodistrian University of Athens, Department of Physical Education and Sports Sciences, Athens, Greece;
authors: Ioannis
authors: I
authors: Nasis
authors: National and Kapodistrian University of Athens, 1st Department of Critical Care Medicine, Evangelismos Hospital, Athens, Greece;
authors: Andreas
authors: A
authors: Asimakos
authors: National and Kapodistrian University of Athens, 1st Department of Critical Care Medicine, Evangelismos Hospital, Athens, Greece;
authors: Spyros
authors: S
authors: Zakynthinos
authors: National and Kapodistrian University of Athens, Department of Physical Education and Sports Sciences, Athens, Greece; National and Kapodistrian University of Athens, 1st Department of Critical Care Medicine, Evangelismos Hospital, Athens, Greece; gianvog@phed.uoa.gr.
authors: Ioannis
authors: I
authors: Vogiatzis
mesh_terms: D015444:Exercise / Q000502:physiology*; D005260:Female; D006801:Humans; D008168:Lung / Q000503:physiopathology*; D008297:Male; D029424:Pulmonary Disease, Chronic Obstructive / Q000503:physiopathology*; D013990:Tidal Volume / Q000502:physiology*