1. Division of Physical Therapy, Department of Rehabilitation Sciences, Faculty of Health Care Sciences, Chiba Prefectural University of Health Sciences, Chiba, Japan.
2. Department of Health Promotion Science, Tokyo Metropolitan University, Tokyo, Japan.
3. University Education Center, Tokyo Metropolitan University, Tokyo, Japan.
4. Faculty of Humanities, Sapporo Gakuin University, Hokkaido, Japan.
5. Department of Rehabilitation, Kameda Rehabilitation Hospital, Chiba, Japan