†
On behalf of the A3 Action Group on Frailty and Functional Decline: Alberto Alves, Research Center in Sports Sciences, Health Sciences and Human Development, CIDESD, University Institute of Maia—ISMAI, Portugal; Martina Amanzio, Department of Psychology, University of Turin, Via Verdi 10, 10124 Turin, Italy; Joao Luis Alves Apóstolo, Health Sciences Research Unit: Nursing, Nursing School of Coimbra, Portugal; Fatima Baptista, Exercise and Health Lab, CIPER, Faculdade de Motricidade Humana, Universidade de Lisboa, Portugal; Maurizio Bersani, Lombardy Region, DG Welfare, International Healthcare Projects, Italy; Dora Brites, Research Institute for Medicines (iMed.Ulisboa), Faculty of Pharmacy, Universidade de Lisboa, Lisbon, Portugal; Marta Burgos González, Asociacion Parkinson Madrid, Spain; Helena Canhão, CEDOC, EpiDoC Unit, NOVA Medical School, Universidade Nova de Lisboa, Portugal; Filomena Carnide, Biomechanics and Functional Morphology Lab, CIPER, Faculdade de Motricidade Humana, Universidade de Lisboa, Portugal; Carlotta Chiari, Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, Italy; Oscar Coltell, Department of Computer Languages and Systems, Universitat Jaume I, Castellón, Spain, CIBER Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, Madrid, Spain; Dolores Corella, Department of Preventive Medicine and Public Health, School of Medicine, University of Valencia, Valencia, Spain, CIBER Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, Madrid, Spain; Ana Coto-Montes, Morphology and Cell Biology Department, University of Oviedo, Spain; Antonio Cuesta-Vargas, Universidad de Malaga, Andalucia Tech, Instituto de Investigacion Biomédica de Malaga (IBIMA) Grupo de Clinimetria, Malaga, Spain; Armando Manuel de Mendonça Raimundo, Departamento de Desporto e Saúde, Escola de Ciências e Tecnologia, Universidade de Évora, Portugal; Livio De Nardi, Lombardy Region/LISPA, Strategy and Coordination for Regional Welfare, Italy; Manuela De Sario, Department of Epidemiology, Lazio Regional Health Service, ASL Rome 1, Italy; S. Dias, Faculdade de Motricidade Humana, Universidade de Lisboa, Lisbon, Portugal; Bart Geurden, Faculty of Medicine and Health Sciences, University of Antwerp; Edwig Goossens, Center for Gastrology, Antwerp, Belgium; Leontios Hadjileontiadis, Department of Electrical and Computer Engineering, Aristotle University of Thessaloniki, GR 54124 Thessaloniki, Greece, Department of Electrical and Computer Engineering, Khalifa University of Science and Technology, PO BOX 127788, Abu Dhabi, UAE; Judith Haendeler, Medical Faculty, University of Duesseldorf, Germany; Harriet Jager-Wittenaar, Hanze University of Applied Sciences | Research Group Healthy Ageing, Allied Health Care and Nursing, The Netherlands; Christos Kleisiaris, Nursing Department, Technological Educational Institute of Crete, Greece; Tomasz Kostka, Medical University of Lodz, Poland; Marcello Maggio, Geriatric Clinic Unit University Hospital of Parma, Italy; Joao Malva, Faculty of Medicine, University of Coimbra and Ageing@Coimbra EIP on AHA Reference Site, Coimbra, Portugal; Mario Antonio Cardoso Marques, Research Center in Sports Sciences, Health Sciences and Human Development, CIDESD, University Institute of Maia—ISMAI, Portugal; Sara Palermo, Department of Psychology, University of Turin, Via Verdi 10, 10124 Turin, Italy; Simeon Panagiotakis, Heraklion University Hospital, Crete, Greece; Oberdan Parodi, Institute of Clinical Physiology—CNR, Italy; Andrea Poscia, Active Ageing Working Group of the Italian Society of Hygiene (SItI)—Lazio Section, Italy; Armando Raimundo, Departamento de Desporto e Saúde Escola de Ciências e Tecnologia, Universidade de