The effects of aerobic exercise on cardiac output during exercise in patients with chronic heart failure
10.3760/cma.j.issn.0253-3758.2011.08.004
- VernacularTitle:有氧运动康复对慢性心力衰竭患者运动心排血量及相关参数的影响
- Author:
Yu-Qin SHEN
1
;
Jin-Fa JIANG
;
Le-Min WANG
;
Lin CHE
;
Xiu-Qing QI
;
Wen-Jun XU
;
Bing DENG
;
Hao-Ming SONG
;
Wen-Lin MA
;
Wen-Wen YAN
;
Xiao-Yu ZHANG
;
Qi-Ping ZHANG
;
Guang-He LI
Author Information
1. 同济大学附属上海市同济医院
- Keywords:
Heart failure,congestive;
Cardiac output;
Exercise
- From:
Chinese Journal of Cardiology
2011;39(8):700-705
- CountryChina
- Language:Chinese
-
Abstract:
Objective To observe the effects of aerobic exercise on cardiac output during exercise in patients with chronic heart failure (CHF). Methods A total of 50 CHF patients ( echocardiography measured left ventricular ejection fraction ＜ 0. 49) were enrolled in the study and randomly divided into aerobic exercise group ( n = 25 ) and control group ( n = 25 ). Cardiopulmonary exercise testing (CPET) was performed. Patients of aerobic exercise group underwent aerobic exercise according to aerobic exercise prescription and exercise intensity is decided by anaerobic threshold before 10 J/s ( 1 minute before) of the oxygen consumption. After 6 supervised aerobic exercise training sessions in the hospital, patients were asked to perform the home-based aerobic exercise training. Patients in control group were required to maintain daily physical activities. CPET were reviewed 3 months later. Results Cardiac output(CO) ,peak CO, peak cardiac power output ( peak CPO), resting heart rate ( HR), heart rate at AT ( HR AT), HR peak, resting mean arterial pressure (MAP), peak MAP at baseline were similar between aerobic exercise group and control [(4. 2 ± 2. 0) L/min vs. (3. 3 ± 1.0) L/min, (6. 2 ± 2. 7 ) L/min vs. (5. 2 ± 1.8 ) L/min,( 1.8 ± 2. 9) L/min vs. (2. 0 ± 1.8 ) L/min, ( 1.3 ± 0. 5 ) J/s vs. ( 1.2 ± 0. 5 ) J/s, (76. 8 ± 13.5 ) beats/min vs. (73.4 ± 11.9 ) beats/min, ( 91.5 ± 11.3 ) beats/min vs. ( 92. 6 ± 12. 4 ) beats/min, ( 106. 0 ± 12. 9 )beats/min vs. ( 108. 3 ± 17.4) beats/min, (80. 8 ±9. 9)mm Hg( 1 mm Hg =0. 133 kPa) vs. (87. 6 ± 13.3)mm Hg, ( 98. 8 ± 12. 4 ) mm Hg vs. ( 102. 7 ± 13.9 ) mm Hg, all P ＞ 0. 05]. Compared to baseline, CO, peak CO, peak CPO, HR, HR AT, HR peak, MAP, peak MAP after 3 months were similar between aerobic exercise group and control( all P ＞ 0. 05 ). The differences between baseline and 3 months later expressed as △CO,△peak CO,△peak CPO, △HR, △HR AT, △HR peak, △MAP, △peak MAP were also similar between aerobic exercise group and control group [( - 0. 7 ± 2. 4) L/min vs. (0. 7 ± 2.0) L/min, ( 1.1 ± 2. 6 ) L/min vs.(1.4±2. 1)L/min,(0. 1 ±3.7)L/min vs. ( -0.2 ±2. 5) L/min, (0. 2 ± 1.0) J/s vs. (0.2 ±0.5)J/s,( - 0. 4 ± 7. 6) beats/min vs. ( 1.9 ± 9.9 ) beats/min, ( 3.4 ± 11.3 ) beats/min vs. ( - 2. 8 ± 7.6 )beats/min, (8. 9 ± 14. 5 )beats/min vs. (3.7 ± 14. 4)beats/min, (1.5 ± 12. 8 )mm Hg vs. ( - 1.3 ± 11.1 )mmHg,(6.4±18. 9)mm Hg vs. (1.3±12.3)mm Hg,all P＞0. 05]. Conclusion Three months aerobic exercise training did not improve cardiac output and related parameters during exercise in this cohort patients with CHF.
