1. Department of Internal Medicine, Division of Cardiology, School of Medicine, Keimyung University, Daegu, Republic of Korea
2. Department of Sport Science, Dongguk University, Gyeongju, Republic of Korea
3. Department of Health and Human Performance, College of Liberal Arts and Social Sciences, University of Houston, Texas, USA
4. College of Humanities and Arts, Sports and Health Care Major, Korea National University of Transportation, 50 Daehak-ro, Chungju-si, Chungbuk 27469, Republic of Korea