1. Department of Cardiovascular Dynamics National Cerebral and Cardiovascular Center Osaka Japan
2. Department of Cardiology Kurashiki Central Hospital Ohara HealthCare Foundation Okayama Japan
3. Division of Clinical Research Kurashiki Clinical Research Institute Ohara HealthCare Foundation Okayama Japan
4. Department of Sport and Health Sciences Faculty of Sport and Health Science Osaka Sangyo University Osaka Japan