1. Department of Health Sciences, Graduate School of Medicine, Shinshu University, Japan
2. Department of Health Sciences, Graduate School of Medicine, Science and Technology, Shinshu University, Japan
3. Department of Rehabilitation, JA Nagano Kouseiren Kakeyu-Misayama Rehabilitation Center Geriatric Health Services Facilities Izumino, Japan
4. Department of Physical Therapy, School of Health Science, Shinshu University: 3-1-1 Asahi, Matsumoto, Nagano 390-8621, Japan