1. Department of Physical Therapy, Uekusa Gakuen University: 1639-3 Ogura-cho, Wakaba-ku, Chiba-city, Chiba 264-0007, Japan
2. Department of Physical Therapy, Ibaraki Prefectural University of Health Sciences, Japan
3. Graduate School of Health Sciences, Ibaraki Prefectural University of Health Sciences, Japan
4. Department of Physical Therapy, Ibaraki Prefectural University of Health Hospital, Japan