Heart Failure With Preserved Ejection Fraction Clinical Trial
Official title:
Isometric Exercise Training in Patients With Heart Failure With Preserved Ejection Fraction: a Randomised Controlled Study
Verified date | October 2022 |
Source | St George's, University of London |
Contact | n/a |
Is FDA regulated | No |
Health authority | |
Study type | Interventional |
Heart failure with a preserved ejection fraction (HFpEF) is a major cause of morbidity and mortality. Hypertension remains one of the major modifiable risk factors in HFpEF development and progression. The role of aerobic exercise training for blood pressure (BP) reduction is well established, with positive cardiac, vascular, and neurohumoral adaptations all cited as potential mechanisms for improving arterial haemodynamics. However, recent evidence has shown that a specific type of resistance exercise alone, known as isometric exercise (IE), produces greater mean BP reductions than what has traditionally been seen with both aerobic and dynamic resistance exercise training programmes. Indeed, short duration IE training causes significant improvements in both cardiac structure and function, in addition to inducing significant reductions in resting BP in normotensive, pre-hypertensive and hypertensive individuals. This study aims to compare the acute and chronic effects of an IE training intervention on diastolic function parameters in patients who have been diagnosed with HFpEF compared to a control group.
Status | Not yet recruiting |
Enrollment | 48 |
Est. completion date | December 2023 |
Est. primary completion date | September 2023 |
Accepts healthy volunteers | No |
Gender | All |
Age group | 18 Years and older |
Eligibility | Inclusion Criteria: - Patients diagnosed with HFpEF. - Patients under the care of a St George's Heart Failure cardiology consultant. - Patients willing and able to provide informed consent. - Male and female, aged 18 years or above. - Medically optimised patients. Exclusion Criteria: - Recent myocardial infarction or electrocardiographic changes, complete heart block, unstable angina. - Inability or unwilling to provide informed consent. - Male and female, aged 17 years or younger. - Patients with HFrEF. - Patients with musculoskeletal injury that could conceivably be affected by their involvement. - Resting BP values of =180/110 mmHg. - Patients unable to understand verbal and written English. |
Country | Name | City | State |
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n/a |
Lead Sponsor | Collaborator |
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St George's, University of London |
Type | Measure | Description | Time frame | Safety issue |
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Primary | Diastolic function | Whether an isometric exercise training (IET) programme statistically significantly improves diastolic function parameters in patients who have been diagnosed with HFpEF. These parameters will be measured quantitatively using transthoracic echocardiography and using measures of transmitral filling velocity (early [E] and late [A] left ventricular filling velocities), the E/A ratio and tissue Doppler velocities (mitral annulus velocities in diastole [E']) and the E/E' ratio. | 1-year | |
Secondary | Blood pressure | Isometric exercise training has been shown to reduce systolic and diastolic blood pressure (mmHg). Our secondary outcome measure is to record any statistically significant changes in blood pressure following a programme of isometric exercise training compared to a control group. | 1-year |
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