1. Department of Information Systems, Faculty of Informatics, Daido University: 10-3 Takiharu-cho, Minami-ku, Nagoya 457-0819, Japan
2. Department of Orthopedic Surgery, National Center for Geriatrics and Gerontology, Japan
3. Three-Dimensional Motion Analysis Room, Aichi Prefectural Mikawa Aoitori Medical and Rehabilitation Center for Developmental Disabilities, Japan
4. Department of Integrated Health Sciences, Graduate School of Medicine, Nagoya University, Japan
5. Department of Electrical and Mechanical Engineering, Graduate School of Engineering, Nagoya Institute of Technology, Japan