1. Department of Rehabilitation, Japanese Red Cross Nagasaki Genbaku Hospital, Japan
2. Department of Orthopedic Surgery, Japanese Red Cross Nagasaki Genbaku Hospital, Japan
3. Department of Rehabilitation, Nagasaki Memorial Hospital, Japan
4. Department of Physical Therapy Sciences, Nagasaki University Graduate School of Biomedical Sciences, Japan
5. Medical Engineering Laboratory, ALCARE Co, Ltd, Japan