Andrea Manca1, David Moher2, Lucia Cugusi3, Zeevi Dvir4, Franca Deriu5. 1. Research fellow in physiology, Department of Biomedical Sciences, University of Sassari, Sassari, Italy. 2. Senior scientist, associate professor in clinical epidemiology, Centre for Journalology, Ottawa Hospital Research Institute, Ottawa, Ont. 3. Research fellow in cardiovascular sciences, Department of Medical Sciences and Public Health, University of Cagliari, Cagliari, Italy. 4. Professor of biomechanics, Department of Physical Therapy, Sackler Faculty of Medicine, University of Tel Aviv, Tel Aviv, Tel Aviv-Yafo, Israel. 5. Associate professor of physiology, Department of Biomedical Sciences, University of Sassari, Sassari, Italy.