1. Faculty of Sociology, Shikoku Gakuin University, Zentsuji-shi 765-8505, Kagawa, Japan
2. Promoting Exercise Association in Kagawa, Marugame-shi 763-0074, Kagawa, Japan
3. Department of Clinical Psychology, Faculty of Medicine, Kagawa University, Kita-gun 761-0793, Kagawa, Japan
4. Department of Hygiene, Faculty of Medicine, Kagawa University, Kita-gun 761-0793, Kagawa, Japan