1. Division of Physical Therapy, Department of Rehabilitation, Faculty of Health Sciences, Naragakuen University: 3-15-1 Nakatomigaoka, Nara-shi, Nara 631-8524, Japan
2. Department of Physical Therapy, Faculty of Health Science, Osaka Yukioka College of Health Science, Japan
3. Department of Human Development, Graduate School of Human Development and Environment, Kobe University, Japan