The Effect of a Digital Heart Health App and Lifestyle Intervention for Heart Disease in Primary Care.

Not Applicable

Not yet recruiting

• Conditions: Cardiovascular Diseases; Cardiovascular Risk Factors; Dyslipidemia; Cholesterol; Major Cardiovascular Event

• Registration Number: NCT06919302
• Lead Sponsor: University of Toronto

Brief Summary

Despite the availability of medications, many people around the world continue to live with long-term health problems like heart disease, stroke and diabetes. In Canada, heart disease is a leading cause of death. Managing these health issues can be done by changing diet and lifestyle. Specific ways of eating have been proven to improve risk for heart disease and stroke. However, because doctors often have limited time, nutrition education, and lack of tools for counseling patients on nutrition, they can often only provide minimal support to help patients make necessary lifestyle changes. Digital tools and mobile applications offer an opportunity to involve doctors and patients in delivering nutrition interventions. This approach has the potential to save time, provide education, and reduce healthcare costs. This study is being done to understand the effect of a digital heart health program added to standard of care, compared with standard of care alone on heart health. All eligible participants in this study will be randomized (determined by chance) to one of two possible interventions: 1) a digital heart health program + standard of care; 2) standard of care. Standard is care is defined as the best practice based on guidelines for the treatment of a condition. All participants will be followed for seven years and will be asked to complete online questionnaires and complete blood work at their nearest LifeLabs clinic, as well as wear a continuous glucose monitor and wrist actigraph (at 3 time points in the first year). In addition, participants randomized to the digital heart health program + standard of care will be expected to use the heart health app and join 16 online synchronous sessions over the first year.

After seven years, the intervention phase of the study will end and the study will become a cohort study. All participants at the 7-year time point will be invited to use the heart health app. As part of the cohort study, participants will be asked to continue completing the same questionnaires online and completing bloodwork at their nearest LifeLabs every four years for the duration of their participation in the cohort study.

The main questions this study aims to answer are:

1. Will a digital heart health program added to standard of care result in a clinically meaningful reduction in blood cholesterol and other risk factors after 1-year compared to standard of care alone?

2. Will a digital heart health program added to standard of care result in a reduction in major cardiovascular events after 7-years compared to standard of care alone?

3. Are the observed effects sustained beyond the 7-years of the intervention?

We hypothesize that the digital heart health program added to standard of care will result in a clinically meaningful reduction in blood cholesterol and other risk factors for heart disease after 1-year and reduce major cardiovascular events after 7-years compared to standard of care alone.

Detailed Description

Not available

Study Timeline

• Study First Submitted: 2025-03-27
• Status Verified: 2025-04
• Study First Submitted QC: 2025-04-04
• Last Update Submitted: 2025-04-04
• Study First Posted: 2025-04-09
• Last Update Posted: 2025-04-09
• Study Start: 2025-06-01
• Primary Completion: 2034-06-01
• Study Completion: 2035-06-01

Recruitment & Eligibility

• Status: NOT_YET_RECRUITING
• Sex: All
• Target Recruitment: 1100

Inclusion Criteria

• Be taking statin medication with or without other antihyperlipidemic therapy (stable dose for at least 3-months).

• Fall under either of the 2 categories:

  1. Secondary prevention participants: males and females ≥45 years of age with established atherosclerotic cardiovascular disease (ASCVD) defined as at least one of the following: i. Prior myocardial infarction (MI); ii. Acute coronary syndrome (ACS); iii. Stroke/TIA; iv. Coronary revascularization; v. Documented carotid disease (endarterectomy, carotid stenosis ≥50%); vi. Stable angina; vii. Coronary artery disease (CAD) by angiography; viii. Peripheral artery disease (PAD); ix. Abdominal aortic aneurysm (AAA)

  2. High-risk primary prevention participants: males and females ≥50 years of age plus type 2 diabetes requiring treatment with medication and at least one additional risk factor: i. Males ≥55 years of age and females ≥65 years of age; ii. Cigarette smoker or stopped smoking within 3 months before Visit 1; iii. Hypertension and on antihypertensive medication for at least 6-months; iv. Chronic kidney disease (CKD); v. Retinopathy, defined as any of the following: non-proliferative retinopathy, pre-proliferative retinopathy, proliferative retinopathy, maculopathy, advanced diabetic eye disease or a history of photocoagulation

• Be on a stable dose for at least 3-months of all antihyperlipidemic, antihyperglycemic, antihypertensive, and antiobesity therapies.

• Have a family physician in Ontario and a valid Ontario Health Card.

• Have regular access to an online portal

• Be proficient in English.

Exclusion Criteria

• Major disease expected to result in death within 2 years (except cardiovascular disease)
• Active sever liver disease
• Malabsorption disorders
• Drug or alcohol abuse disorders (within past 6 months)
• Intolerance or allergies to soy protein and tree nuts, peanuts, or seeds
• Planned coronary intervention or any major surgical procedure
• Participation in another clinical trial (within past 3 months)
• End stage renal disease (requirement for peritoneal dialysis or hemodialysis for renal insufficiency or eGFR <30 mL/min)
• Any condition or therapy which might pose a risk to the patient or make participation in the study not be in the best interest of the patient as assessed by the investigator
• Documented severe (New York Heart Association [NYHA] class IV) heart failure
• Mental/psychological impairment expected to affect adherence to the study protocol
• Known AIDS (HIV-positive patients without AIDS are allowed)
• Women planning on becoming pregnant within the first year of the intervention
• Unable to provide informed consent: Appear unable to comprehend the study protocol during the interview process or to understand and communicate in English sufficiently for informed consent.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Primary Outcome Measures

Name	Time	Method
Proportion achieving a ≥8% reduction in LDL-C or non-HDL-C	from enrollment to 1-year	Proportion of participants who achieve a ≥8% reduction in LDL-C or non-HDL-C in the intervention group compared to standard of care at 1-year.; (If this is not achieved, we will then assess the difference in the proportion achieving ≥8% reduction in LDL-C or non-HDL-C and ≥5mmHg reduction in systolic blood pressure. If this is not achieved, we will then assess the difference in the proportion achieving ≥8% reduction in LDL-C or non-HDL-C and ≥10% reduction in the inflammatory marker, CRP.)
Major Cardiovascular Events	from enrollment to 7-years	Major cardiovascular events in the intervention group compared to standard of care at 7-years.

Secondary Outcome Measures

Name	Time	Method
Dietary Adherence	from enrollment to 1-year and 7-years	Proportion of participants who achieves ≥12/25-pt Diet Score, in the intervention group compared to standard of care at 1-year and 7-years. The Diet Score will be assessed using the Harvard Willett food frequency questionnaire.
Proportion achieving a ≥8% reduction in LDL-C or non-HDL-C	from enrollment to 7-years	Proportion of participants who achieve a ≥8% reduction in LDL-C or non-HDL-C in the intervention group compared to standard of care at 7-years.
Proportion achieving established lipid targets for LDL-C or non-HDL-C	from enrollment to 1-year and 7-years	Proportion of participants who achieve Canadian Cardiovascular Society targets for LDL-C (\<2.0mmol/L for primary \<1.8mmol/L for secondary prevention) or non-HDL-C (\<2.6mmol/L for primary and \<2.4mmol/L for secondary prevention) in the intervention group compared to standard of care at 1-year and 7-years.
Blood Lipids	from enrollment to 1-year and 7-years	Changes in LDL-C, non-HDL-C, HDL-C, triglycerides and apoB levels in the intervention group compared to standard of care at 1-year and 7-years
Changes in Lipid-Lowering Medications	from enrollment to 1-year and 7-years	Changes in lipid-lowering medications in the intervention group compared to standard of care at 1-year and 7-years
Changes in Glycemia	from enrollment to 1-year and 7-years	Changes in fasting blood glucose levels in the intervention group compared to the standard of care at 1-year and 7-years
Changes in Insulin Resistance	from enrollment to 1-year and 7-years	Changes in HOMA-IR in the intervention group compared to the standard of care at 1-year and 7-years
Changes in Insulin	from enrollment to 1-year and 7-years	Changes in fasting blood insulin levels in the intervention group compared to the standard of care at 1-year and 7-years
Changes in Measures of Adiposity	from enrollment to 1-year and 7-years	Changes in waist circumference in the intervention group compared to the standard of care at 1-year and 7-years
Changes in Systolic Blood Pressure	from enrollment to 1-year and 7-years	Changes in systolic blood pressure in the intervention group compared to the standard of care at 1-year and 7-years
Changes in Diastolic Blood Pressure	from enrollment to 1-year and 7-years	Changes in diastolic blood pressure in the intervention group compared to the standard of care at 1-year and 7-years
Changes in Inflammation	from enrollment to 1-year and 7-years	Changes in c-reactive protein (CRP) levels in the intervention group compared to the standard of care at 1-year and 7-years
Cost-Effectiveness - quality-adjusted life years (QALYs)	from enrollment to 1-year and 7-years	Changes in quality-adjusted life years (QALYs) assessed using the EQ5D-5L in the intervention group compared to standard of care at 1-year and 7-years
Cost-Effectiveness - medical resource utilization	from enrollment to 1-year and 7-years	Changes in medical resources utilization (Canadian dollars) in the intervention compared to standard of care at 1-year and 7-years.; Medical resource utilization encompassing primary care, hospital care, specialist care, and medications for individuals covered by public drug insurance will be obtained from Ontario health administrative databases housed at ICES (formerly the Institute for Clinical Evaluative Sciences).
Cost-Effectiveness - out-of-pocket food and medical costs	from enrollment to 1-year and 7-years	Changes in out-of-pocket food and medical costs in the intervention group compared to the standard of care at 1-year and 7-years
Cost-utility	from enrollment to 1-year and 7-years	Costs / point change in QALY in the intervention group compared to the standard of care at 1-year and 7-years

Trial Locations

Locations (1)

C. David Naylor Building; 🇨🇦 Toronto, Ontario, Canada