1. Department of Health and Sports Sciences, Graduate School of Medicine, Osaka University, 1-17 Machikaneyama-cho 560-0043, Toyonaka, Osaka, Japan
2. Department of Sports Medical Biomechanics, Graduate School of Medicine, Osaka University, 2-2 Yamada-oka 565-0871, Suita, Osaka, Japan
3. Department of Neurology, Graduate School of Medicine, Osaka University