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Exercise training in heart failure
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  • Published on:
    Exercise training does reverse left ventricular diastolic dysfunction in high risk subjects

    While it is true, as the authors assert, that there is limited data on exercise-induced reversal of cardiac remodeling, a recent study suggests that the cardiac effects of sedentary aging(in middle age) can be reversed by exercise training(1). In that study sixty one(48% male) healthy sedentary participants of mean age 53 were randomly assigned to either 2 years of exercise training(n=34) or attention control(control=27). In each subject measurements were taken to evaluate left ventricular stiffness. Maximal oxygen uptake was measured to quantify changes in fitness. Fifty three participants completed the study. Adherence to prescribed exercise sessions was 88% on average. As a result of exercise training left ventricular stiffness was significantly(p=0.0018)reduced(right/ downward shift in the end-diastolic pressure-volume relationships) in comparison with its pre-exercise value. This parameter did not change in the control group. Exercise significantly(p<0.001)increased the left ventricular end diastolic volume , whereas pulmonary capillary wedge pressure was unchanged, thereby generating significantly(p=0.007) greater stroke volume for any given filling pressure. The authors concluded that regular exercise training could provide protection against the future risk of heart failure with preserved ejection fraction by mitigating the risk of increase in cardiac stiffness attributable to a sedentary lifestyle(1). Accordingly, although we cannot influence the natu...

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