Impact of Mild or Moderate Physical Activity and Progression of Subclinical Atherosclerosis

NCT ID: NCT02628275

Last Updated: 2023-10-04

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: NA
• Total Enrollment: 129 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2015-08-31
• Study Completion Date: 2022-10-31

Brief Summary

Subclinical atherosclerosis is identified in roughly 2/3rd of otherwise healthy young adults. How much physical activity is required to prevent progression of subclinical atherosclerosis? In the 85% of healthy younger Canadian men and women who do NOT perform the recommended 150 min/week of moderate- to vigorous-intensity physical activity (MVPA) as recommended, is it reasonable to aim for a lower regimen of light physical activity (LPA) despite the absence of supporting literature, or to the contrary should the investigators insist on achieving MVPA? In this perspective, MoMA provides a unique opportunity to determine whether LPA vs. MVPA is necessary to limit subclinical atherosclerosis progression in inactive otherwise healthy adults. Resolving such unknowns should inform strategies to prevent decades of silent disease progression leading to future morbidity and mortality.

Detailed Description

Cardiovascular disease (CVD) remains rampant in developed regions, topping the list of causes of mortality leading to 29% of all deaths. In addition to mortality, the economic impact of morbidity and hospitalization related to CVD costs Canadians over $22.2 billion every year. By far the leading cause of CVD is atherosclerosis defined as a thickening of the arterial wall with fatty deposits. Therefore, atherosclerosis is the underlying mechanism behind the #1 cause of mortality and morbidity in developed regions. Autopsy studies performed in healthy casualties of the Korean, Vietnam, Iraq and Afghanistan Wars revealed that atherosclerosis is present in up to 78% of young men before their 30th birthday, even in the absence of traditional risk factors (high blood pressure, dyslipidemia, obesity). Prevention of atherosclerosis and its silent progression towards clinical events decades later should therefore become a priority in all young adults. A potentially powerful avenue of cardiovascular prevention lies in the reduction of subclinical atherosclerosis progression in younger adults through physical activity. Unfortunately, only 15% of Canadians meet the current recommendations for 150min/week of moderate- to vigorous-intensity physical activity (MVPA). In response to the observation that Canadians simply don't find time for/or do not appear to value current recommendations, it was suggested that even light-intensity physical activity (LPA) might improve biomarker levels compared to a sedentary lifestyle. It appears that in the face of failed attempts to convince Canadians to perform 150min/week of MVPA, expectations towards LPA have been lowered despite the absence of convincing data.

MoMA is a randomized controlled trial to study the effects of two doses of physical activity on subclinical atherosclerosis burden progression; 270 inactive men and women aged 18-40 years without CVD or risk factors will be enrolled. At baseline, risk factors, physical activity level and nutritional habits will be measured through validated questionnaires; blood work and anthropometric parameters measurements will be performed (markers of cardiometabolic risk); fitness level will be assessed through treadmill test and accelerometer; magnetic resonance imaging of carotid atherosclerosis, liver and adipose tissue will be performed.

Conditions

Atherosclerosis

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: PREVENTION
• Blinding Strategy: NONE

Study Groups

Control

Continued inactivity

Group Type: NO_INTERVENTION

No interventions assigned to this group

Moderate to vigorous physical activity

MVPA (55-90% of maximum heart rate) for 150 min/week (current recommendations)

Group Type: ACTIVE_COMPARATOR

Moderate to vigorous physical activity

Intervention Type: BEHAVIORAL

55-90% maximum heart rate for 150min/week (current recommendations)

Light physical activity

LPA (40-55% of maximum heart rate) for 150 min/week

Group Type: ACTIVE_COMPARATOR

Light physical activity

Intervention Type: BEHAVIORAL

40-55% maximum heart rate for 150min/week

Interventions

Moderate to vigorous physical activity

55-90% maximum heart rate for 150min/week (current recommendations)

Intervention Type: BEHAVIORAL

Light physical activity

40-55% maximum heart rate for 150min/week

Intervention Type: BEHAVIORAL

Eligibility Criteria

Inclusion Criteria

• Inactivity during leisure time as assessed through the long version of the International Physical Activity Questionnaire;
• Apparent health defined as 1) no known CVD (coronary, cerebrovascular or peripheral vascular disease), and 2) no known cardiovascular risk factors or cardiovascular medications (hypertension, dyslipidemia, diabetes, active smoking within past year, or clinical obesity defined as body mass index (BMI) ≥ 30kg/m2);
• Signed consent form.

Exclusion Criteria

• Known dyslipidemia (participants receiving lipid-lowering medication, or in the absence of such medication, having: a fasting total plasma cholesterol level > 6.2 mmol/L, a triglyceride level ≥ 1.7 mmol/L, and/or HDL-cholesterol level < 1.0 mmol/L in men and < 1.3 mmol/L in women);
• Hypertension (participants receiving antihypertensive medications or having blood pressure ≥ 135/85 mmHg);
• Diabetes (participants taking diabetes medication or having plasma HbA1c ≥ 6.5%);
• Postmenopausal women;
• Pregnancy or nursing in the past year or expected in the next two years;
• Contraindications to MRI, as per the standardized IUCPQ MRI screening form;
• Participation in another research study.

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 55 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

Canadian Institutes of Health Research (CIHR)

OTHER_GOV

Sponsor Role: collaborator

Laval University

OTHER

Sponsor Role: lead

Responsible Party

Eric Larose, DVM, MD, FRCPC, FCCS, FAHA

Full Professor, Faculty of Medicine

Responsibility Role: PRINCIPAL_INVESTIGATOR

Principal Investigators

Eric Larose, DVM, MD

Role: PRINCIPAL_INVESTIGATOR

Institut universitaire de cardiologie et de pneumologie de Québec, University Laval

Locations

Institut universitaire de cardiologie et de pneumologie de Québec - Université Laval

Québec, , Canada

Countries

Canada

Other Identifiers

CIHR MOP-137079

Identifier Type: -

Identifier Source: org_study_id