1 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.
2 Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano, Italy.
3 National and Kapodistrian University of Athens, Department of Physical Education and Sports Sciences, Athens, Greece;
4 National and Kapodistrian University of Athens, 1st Department of Critical Care Medicine, Evangelismos Hospital, Athens, Greece;
5 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.