1480 PURPOSE: To investigate the effect of aquatic exercise and on-land exercise on hemodynamic responses and physical fitness in patients with coronary artery disease (CAD) in KOREA. METHODS: Thirty patients with coronary artery disease, who had successful Percutaneous Transluminal Coronary Angioplasty (PTCA) and Stent Implantation three weeks ago, were participated in this study. They were randomly assigned to one of three groups, i.e., aquatic exercise group (AE, N = 10, 57.1 ± 4.0 yrs), on-land exercise group (OE, N = 10, 55.1 ± 5.0 yrs) and control group (CON, N = 10, 55.3 ± 5.8 yrs). All the subjects performed maximal exercise test and physical fitness testing; the treadmill test by Bruce protocol was used for hemodynamic responses. Physical fitness test were cardiopulmonary endurance (treadmill test: gas analysis), muscle strength (grip strength, back lift), muscle endurance (sit up), flexibility (trunk flexion), balance (standing on one foot with closed eyes). Those tests were repeated at an interval of three months. Subjects in the AE group completed the exercise training sessions, which consisted of endurance exercise performing for 30.60min/session, 3d/week at the intensity of RPE 11. Subjects in the OE group completed the exercise training sessions, which consisted of endurance exercise performing for 30.60min/session, 3d/week at the intensity of same energy expenditure(300Kcal) with AE. One-way ANOVA was used for data analysis setting the significance level at 0.05. RESULTS: Among those three groups, hemodynamic responses have been as follows: In AE group, resting rate pressure product was decreased significantly (10413.0 ± 2283.7 vs. 7315 ± 1318.7 bpm × mmHg, p < .05) compared to the CON. On the other hand, rest diastolic blood pressure was increased (69.0 ± 10.3 vs. 79.8 ± 8.9 mmHg, p < .05) in OE group and peak heart rate also was increased significantly (136.1 ± 20.1 vs. 149.6 ± 20.2 bpm, p < .05) in OE group compared to the CON. Even though no outstanding differences were showed in physical fitness all variables have been improved after three months of the AE and OE training. CONCLUSIONS: The results indicate that the AE and OE are helpful to get affirmative progress in hemodynamic response and physical fitness. Accordingly, it is suggested that AE training be involved in cardiac rehabilitation program.