1 Centro Hospitalar Lisboa Ocidental - Hospital Egas Moniz - Intensive Care Unit (UCIP) Higher School of Health of Alcoitão (ESSAlcoitão), Portugal; vitorhazevedo@hotmail.com.
2 Respiratory Research and Rehabilitation Laboratory (Lab3R), School of Health Sciences (ESSUA) and Institute of Biomedicine (iBiMED), University of Aveiro, Aveiro, Portugal; School of Rehabilitation Science, McMaster University, Hamilton, Canada; alao@ua.pt.