ISSN: 1859 - 2872
Evaluation of exercise capacity in heart failure with preserved ejection fraction patients by the exercise treadmill test
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Abstract
Objective: To evaluate the exercise capacity of patients with heart failure with preserved ejection fraction by mobility exercise with running mats. Subject and method: Assessing changes in heart rate, exercise intensity, and maximal oxygen consumption during and after exercise in 50 patients diagnosed with preserved ejection fraction heart failure at the Vietnam Heart Institute - Bach Mai Hospital. Result: Mean age was 50 ± 13.9 years (24-71 years). Baseline mean left ventricular ejection fraction was 56.6 ± 3.2% and the exercise on the running mat for a mean time of 1041 ± 318 seconds. The results showed that the mean exercise level of the patients was 13.0 ± 3.9 (METs) and maximum oxygen consumption VO2max of 62.3 ± 19.9 (ml/kg/min). After exercise, the heart rate recovery value after 1 minute was 29.6 ± 14.5 (beats/min). Exercise capacity was correlated with heart rate recovery value with r = 0.436 (p<0.05). Conclusion: Heart rate recovery value of Vietnamese subjects with heart failure preserved ejection fraction after exercise 1 minute was positively correlated with METS exercise capacity. There was no correlation between the heart rate recovery value and other factors such as gender, ejection fraction and maximal oxygen consumption.
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