1. Japanese Association of Sports Psychiatry, Tokyo, Japan
2. Faculty of Sport Sciences, Waseda University, Tokorozawa, Saitama, Japan
3. Department of Sports Medicine, Faculty of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
4. Faculty of Health and Sports Science, Graduate School of Health and Sports Science, Juntendo University, Inzai City, Chiba, Japan
5. Sports Medical Center, Japan High Performance Sport Center, Japan Institute of Sports Sciences, Kita-ku, Tokyo, Japan
6. Japanese Olympic Committee, Shinjuku-ku, Tokyo, Japan