The Effects of Combined Same Session Aerobic and Resistance Training on Physical Performance in Coronary Artery Disease Patients : Protocol Comparison

Abstract

Aerobic training is included to cardiac rehabilitation programs together with resistance training. The effects of combined aerobic and resistance training performed in a same session with different protocols on peak aerobic capacity (VO2peak) and maximal dynamic strength (1RM: one repetition maximum) are not well known. We compared the effectiveness of two different combined aerobic and resistance training programs for 12 weeks performed three times in a week in stable Coronary Artery Disease (CAD) patients (n=30) who had previously performed aerobic training only. The patients were randomized to High Volume- Low Intensity Group (HLG) or Low Volume-High Intensity Group (LHG). Both groups performed laboratory controlled aerobic exercise first (60min, 80% of lactate threshold) followed by six major muscle group resistance exercises (HLG: 30-35% of 1RM, 3 sets, 12 repetitions) or (LHG: 60-70% of 1RM, 3 sets, 6 repetitions). VO2peak remained at the baseline level for whole study group (23 ± 6 vs. 24 ± 7 ml·kg-1·min-1, p=0.380) and the responses did not differ between the HLG and LHG (p=0.891). Muscle strength increased when analyzed as one group for both upper (Push Up; 24 ± 8 vs. 30 ± 7 kg, p <0.0001) and lower body (Leg Extension; 20 ± 6 vs. 27 ± 6 kg, p <0.0001) with no difference between subgroups (p=0.240 and p=0.504, respectively). As conclusion, combined aerobic and resistance training in the same training session for 12 weeks improved maximal strength independently of the intensity of resistance training. These results highlight the importance of regular resistance training, even at moderate intensity, for CAD patients in terms of physical performance and independent living.