Consistency Of Different Intensity Setting Methods Of Aerobic Exercise In The Rehabilitation Of Coronary Heart Disease

ObjectiveThis study was based on that the aerobic threshold method is the optimally safe way of determining the aerobic exercise intensity of patients with coronary heart disease. The aerobic exercise intensity was calculated by using different methods such as cardiopulmonary exercise test, 6 minutes walk test and age estimation. By discussing the consistency of the different methods, provide safe and effective strength setting method for coronary heart disease patients with coronary heart disease, promote the development cardiac rehabilitation in China.MethodsAccording to the selected criteria and exclusion criteria of this study, 20 patients(12males and 8 females) with coronary heart disease were determined. Inform the subjects process two days before cardiopulmonary exercise test, collect the basic information of the subjects and sign the informed consent. Cardiopulmonary exercise test was performed using the German Metalyzer 3B CORTEX motor heart and lung function test instrument.Select the Ramp program, to obtain the anaerobic threshold and peak oxygen intake and other indicators of subjects. Take a 6 minute walk test after a day off, to get the max heart rate in exercise. Using Polar M400 to monitor the heart rate in the subjects’ movement.In this study, SPSS20.0 was used to analyze the variance. The non parametric K-S test is used to test the normality of the measurement data. The consistency of different methods was compared with the Bland-Altman consistency test, Pearson correlation analysis, paired sample t test. P<0.05 was defined to have statistical significance.ResultsThere is no correlation(r=-0.131) and there is a very significant difference(p<0.01)between age estimates method and anaerobic threshold method on determining aerobic exercise target heart rate in patients with coronary heart disease. There is no correlation(r=0.372) between quiet heart rate + 20 method and anaerobic threshold method. Peak oxygen uptake index to determine the target heart rate and anaerobic threshold method are highly correlated(r=0.872). There is no significant difference(p>0.05), and the Bland Altman test display is a consistency between the two methods. Heart rate reserve method to determine the target heart rate and anaerobic threshold method are highly correlated(r=0.836). There is no significant difference(p>0.05), and the Bland Altman test display is a consistency between the two methods.Conclusion1) There is no correlation and consistency between the age estimates method the anaerobic threshold method on the target intensity of aerobic exercise.2) There is no correlation and consistency between quiet heart rate + 20 method and anaerobic threshold method on the target intensity of aerobic exercise.3) There is significant correlation and consistency between the peak oxygen uptake index method and anaerobic threshold method. It shows peak oxygen uptake can replace the maximal oxygen uptake and anaerobic threshold, used to set the intensity of aerobic exercise in patients with coronary heart disease.4) There is significant correlation and consistency between the heart rate reserve method and anaerobic threshold method. In the case of cardiopulmonary exercise test, heart rate reserve method based on 6 minute walk test can be used.