1. Department of Physical Therapy, School of Health Sciences, International University of Health and Welfare: 2600-1 Kitakanemaru, Ohtawara-city, Tochigi 324-8501, Japan
2. Division of Physical Therapy, Doctoral Program in Health Sciences, Graduate School of Health and Welfare Sciences, International University of Health and Welfare, Japan
3. Nishinasuno General Home Care Center, Department of Day Rehabilitation, Care Facility for the Elderly “Maronie-en”, Japan
4. Department of Geriatric Medicine, School of medicine, International University of Health and Welfare, Japan