1. Department of Physiology, Kyung Hee University School of Medicine, Seoul, Korea.
2. Department of Exercise Physiology and Prescription, Graduate School of Health Promotion, Hanseo University, Seosan, Korea.
3. Department of Leisure Sports and Recreation, Yeon Sung University, Anyang, Korea.
4. Department of Urology, Gachon University Gil Hospital, Gachon University of Medicine and Science, Incheon, Korea.