1. Physical Education and Medicine Research Center UNNAN; Shimane Japan
2. Department of Environmental Symbiotic Studies; Tokyo University of Agriculture; Tokyo Japan
3. Division of Preventive Medicine, Brigham and Women's Hospital; Harvard Medical School; Boston Massachusetts USA
4. Department of Health Promotion and Exercise; National Institute of Health and Nutrition; Tokyo Japan
5. Department of Preventive Medicine and Public Health; Tokyo Medical University; Tokyo Japan
6. Faculty of Regional Environment Science; Tokyo University of Agriculture; Tokyo Japan
7. Department of Orthopaedic Surgery; Shimane University School of Medicine; Shimane Japan
8. Physical Education and Medicine Research Foundation; Nagano Japan
9. The Research Institute of Nippon Sport Science University; Tokyo Japan