1. Laboratory of Sports and Health Science; Kyoto Prefectural University of Medicine; Kyoto Japan
2. Japan Society for the Promotion of Science; Tokyo Japan
3. Kansai University of Nursing and Health Sciences; Hyogo Japan
4. Clinics of Internal Medicine and Geriatrics; Helsinki University Central Hospital; Helsinki Finland
5. Geriatric Unit, Department of Internal Medicine, Institute of Clinical Medicine; University of Helsinki; Helsinki Finland