1. Gerontology Research Center and Faculty of Sport and Health Sciences, University of Jyväskylä, Jyväskylä, Finland
2. Seinäjoki University of Applied Sciences, School of Health Care and Social Work, Seinäjoki, Finland
3. NeuroCenter, Neurology, Kuopio University Hospital, Kuopio, Finland
4. Department of Medical Rehabilitation, Oulu University Hospital, Oulu, Finland
5. Nutrition, Exercise Physiology, and Sarcopenia Laboratory, Jean Mayer USDA Human Nutrition Research Center on Aging, Tufts University, Boston, Massachusetts, USA
6. Public Health Promotion Unit, Finnish Institute for Health and Welfare, Helsinki, Finland
7. Division of Clinical Geriatrics, Center for Alzheimer Research, NVS, Karolinska Institutet, Stockholm, Sweden
8. Department of Social and Psychological Studies, Karlstad University, Karlstad, Sweden
9. Department of Psychology, Umeå University, Umeå, Sweden