Observational study of the effects of aerobic and resistance exercise on heart rate variability in patients with heart failure
Objective:To investigate the effects of aerobic exercise and resistance exercise on heart rate variability in patients with heart failure.Methods:Patients with heart failure admitted to Xiaolan People's Hospital of Zhongshan from February 2021 to April 2022 were selected, and randomly divided into aerobic exercise group, resistance exercise group and control group by random number table method. All patients were given conventional drug therapy. Aerobic exercise group and resistance exercise group participated in exercise rehabilitation therapy for 12 weeks, while the control group did not receive exercise rehabilitation therapy.The changes of heart rate variability indexes were compared before and after treatment in each group. The evaluation indexes were the sequential five-minute R-R interval means(SDANN) and the root mean square of the successive differences(RMSSD).Results:A total of 90 patients were included, aged (65±8) years, including 48 males (53.3%, 48/90).Thirty patients in aerobic exercise group, resistance exercise group and control group respectively. The RMSSD of the aerobic exercise group and the resistance exercise group increased after the test, and the RMSSD of the aerobic exercise group increased significantly, and the difference was statistically significant (t=-4.70, P=0.001).The SDANN values of the control group and the aerobic exercise group decreased significantly after the test, and the difference was statistically significant (t=2.82, P=0.009; t=3.81, P=0.001), while the SDANN value of the resistance exercise group was significantly higher than that before the test (t=-4.85, P=0.001).Conclusion:Aerobic exercise can increase vagus nerve activity and increase RMSSD value.Resistance exercise can decrease sympathetic nerve activity and increase SDANN value.Exercise rehabilitation can improve the regulation of autonomic nervous system on the basis of drug therapy.
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