1. Department of Physical Therapy; Tsukuba International University; Tsuchiura Japan
2. Department of Medical Engineering; Division of Health Sciences; Osaka University Graduate School of Medicine; Osaka Japan
3. Center for Information and Neural Networks (CiNet); National Institute of Information and Communications Technology; Osaka University Graduate School of Medicine; Osaka Japan
4. Department of Nutrition; Faculty of Medical and Health Sciences; Tsukuba International University; Tsuchiura Japan