1. Institute of Physical Education, Keio University, 4-1-1, Hiyoshi, Yokohama 223-8521, Japan
2. Graduate School of System Design, Management, Keio University, 4-1-1, Hiyoshi, Yokohama 223-8521, Japan
3. Graduate School of Media and Governance, Keio University, 5322, Fujisawa 252-0883, Japan
4. Sports Medicine Research Center, Keio University, 4-1-1, Hiyoshi, Yokohama 223-8521, Japan
5. FOCS Inc., 1-3-47, Nakahara-Ward, Kawasaki 211-0025, Japan