1. Department of Rehabilitation Medicine, Tachibanadai Hospital: 2-2-1 Tachibanadai, Aoba-ku, Yokohama-shi, Kanagawa 227-0046, Japan
2. Graduate School of Health Sciences, Showa University, Japan
3. School of Nursing and Rehabilitation Sciences, Showa University, Japan
4. Research Institute for Sports and Exercise Sciences, Showa University, Japan
5. Department of Orthopaedic Surgery, Showa University Fujigaoka Hospital, Japan