1 Department of Physical Therapy, Occupational Therapy, Physical Medicine and Rehabilitation, Universidad Rey Juan Carlos (URJC), Avenida de Atenas s/n, Alcorcón, Madrid 28922, Spain. Electronic address: cesar.fernandez@urjc.es.
2 VALTRADOFI Research Group, Department of Physiotherapy, Faculty of Health, Camilo Jose Cela University. Spain.
3 Department of Physical Therapy, Occupational Therapy, Physical Medicine and Rehabilitation, Universidad Rey Juan Carlos (URJC), Avenida de Atenas s/n, Alcorcón, Madrid 28922, Spain.
4 Department of Internal Medicine, Hospital Universitario Severo Ochoa, Madrid, Spain; School of Medicine, Universidad Alfonso X el Sabio, Madrid, Spain.
5 VALTRADOFI Research Group, Department of Physiotherapy, Faculty of Health, Camilo Jose Cela University. Spain; Department of Physiotherapy, Faculty of Health, Camilo José Cela University, Villanueva de la Cañada, Madrid, Spain.