1 University of Antwerp, Antwerp, Belgium. stany.perkisas@zna.be.
2 Belgian Ageing Muscle Society, Brussels, Belgium. stany.perkisas@zna.be.
3 Laboratory of Applied Biology and Neurophysiologie, Université libre de Bruxelles, Brussels, Belgium.
4 Belgian Ageing Muscle Society, Brussels, Belgium.
5 Department of Geriatric Medicine, Klinikum, Carl von Ossietzky University, Oldenburg, Germany.
6 Rehabilitation Sciences Research Department, Vrije Universiteit Brussel, Brussels, Belgium.
7 Department of Rehabilitation Sciences and Physiotherapy, Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium.
8 University of Antwerp, Antwerp, Belgium.
9 Research Group Healthy Ageing, Allied Health Care and Nursing, Hanze University of Applied Sciences, Groningen, The Netherlands.
10 Department of General Practice and Elderly Care Medicine, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.
11 Department of Maxillofacial Surgery, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.
12 Department of Geriatrics, Medical University in Bialystok, Bialystok, Poland.
13 Department of Geriatrics, Neuroscience and Orthopedics, Teaching Hospital "Agostino Gemelli", Catholic University of the Sacred Heart School of Medicine, Rome, Italy.
14 Physical and Rehabilitation Medicine, Parc de Salut Mar; Rehabilitation Research Group, Hospital del Mar Research Institute, Universitat Autònoma de Barcelona, Barcelona, Spain.
15 University Hospital Ramón y Cajal, Madrid, Spain.
16 Department of Internal Medicine and Gerontology, Faculty of Medicine, Jagiellonian University Medical College, Kraków, Poland.
17 Geriatrics Department, Parc Salut Mar, Institut Hospital Del Mar d'Investigacions Mèdiques (IMIM), Universitat Autònoma de Barcelona, Universitat Pompeu Fabra, Barcelona, Spain.
18 Faculty of Medicine and Pharmacy, Vrije Universiteit Brussel, Brussels, Belgium.