Feasibility of High-Intensity Interval Nordic Walking in Patients With Coronary Artery Disease

NCT ID: NCT05434117

Last Updated: 2024-08-02

Basic Information

• Recruitment Status: RECRUITING
• Clinical Phase: NA
• Total Enrollment: 40 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2022-12-09
• Study Completion Date: 2026-04-30

Brief Summary

Coronary revascularization, such as heart bypass surgery (CABG) and percutaneous coronary intervention (PCI [inserting a stent to open up blood vessels]) improve survival for people with coronary artery disease. Yet, many patients suffer from poor physical and mental health after coronary revascularization. Traditional cardiac rehabilitation involving moderate-to-vigorous intensity continuous training (MICT) improves physical and mental health. However, alternative exercise programs, such as high-intensity interval training (HIIT) and Nordic walking may provide superior benefits. Nordic walking is like Nordic skiing but uses specifically designed poles for walking. Nordic walking involved core, upper and lower body muscles, resulting in greater energy expenditure while reducing loading stress at the knee. To date, HIIT used in cardiac rehabilitation settings has focused on lower body (e.g., leg cycling). The investigators are not aware of HIIT protocols that target both upper and lower body at the same time. An exercise program that combines HIIT and Nordic walking (HIIT-NoW) may offer an alternative time-efficient whole-body exercise to improve physical and mental health. This study will test if HIIT-NoW can be an alternative exercise option to improve physical and mental health in patients with coronary artery disease.

Detailed Description

Coronary revascularization improves survival for patients with coronary artery disease (CAD). Despite successful coronary revascularization treatment, however, many patients with CAD are left suffering from poor exercise capacity and frequently experience difficulties in performing daily activities (e.g., getting dressed, sitting down or getting up from the toilet) because of diminished cardiovascular function and exercise tolerance. Decreased exercise capacity leads to a dramatic reduction in quality of life (QoL) and more severe depression symptoms. Low exercise capacity, poor quality of life (QoL) and severer depression symptoms heighten the risk of subsequent cardiovascular events and mortality.

Current guidelines recommend that persons with CAD who have undergone coronary artery bypass graft surgery (CABG) or percutaneous coronary intervention (PCI) participate in exercise-based cardiovascular rehabilitation (CR). Exercise-based CR is safe, effective and a class IA recommendation following CABG and PCI. Irrefutable evidence demonstrates that exercise-based CR including moderate-to-vigorous intensity continuous exercise training (MICT) improves exercise capacity, QoL, depression and reduces hospital readmissions and cardiovascular morbidity and mortality. MICT has long been used to manage the physical and mental health of CAD patients as per the Canadian Guidelines for Cardiovascular Rehabilitation and Cardiovascular Disease Prevention; however, such exercise may be less efficient and perceived as less motivating/enjoyable. Growing evidence suggests that non-conventional exercise interventions, such as high-intensity interval training (HIIT) and Nordic walking are more effective exercise modalities, and maybe more enjoyable, to improve clinical outcomes (e.g., exercise capacity, QoL, and depression symptoms) in patients with CAD.

HIIT (repeated bouts of brief high-intensity exercise interspersed with active recovery) is an effective and efficient exercise training paradigm. A recent meta-analysis (n=10 studies) comparing HIIT and MICT in patients with CAD suggests that: (1) HIIT is superior to MICT in improving cardiorespiratory fitness (V̇O2peak) of patients with CAD, an important clinical vital sign and strong predictor of mortality; and, (2) HIIT and MICT are equally effective in improving QoL and depression symptoms in patients including CAD. Increases in cardiorespiratory fitness decrease mortality risk -- every 3.5 ml/kg/min increase in V̇O2peak yields a 13% improvement in survival. Exercise training-induced increases in cardiorespiratory fitness are therefore highly desirable for the improvement of important patient outcomes.

Nordic walking is similar to Nordic skiing but uses specifically designed poles for walking. Nordic walking includes the recruitment of core, upper and lower body muscles, resulting in greater exergy expenditure while reducing loading stress at the knee joint. Regular participation in Nordic walking leads to increased exercise capacity. Although data is limited regarding the impact of Nordic walking in comparison to MICT on mental health in patients with CAD, some studies in patients with heart failure have shown superior improvements in QoL and fewer depressive symptoms following Nordic walking when compared to MICT. Our previous randomized controlled trial simultaneously comparing 12 weeks of supervised HIIT, MICT and Nordic walking in patients with CAD showed that Nordic walking was statistically and clinically superior in increasing functional capacity (i.e., distance walked over 6 minutes), and have similar effects on QoL and depression when compared to HIIT or MICT.

As many adults with cardiovascular disease consider lack of time a barrier to exercise, HIIT may be an appealing exercise training paradigm as cardiovascular health benefits can be achieved in less time when compared to MICT. HIIT may also address other frequently reported deterrents to MICT, including lack of interest and motivation, boredom, not challenging enough, and tailored for older people's needs. To date, HIIT used in CR settings has predominantly focused on lower body (e.g., leg cycling). There are few HIIT protocols that simultaneously target both upper and lower body, such as high-intensity interval Nordic walking (HIIT-NoW). Studies have shown that HIIT and Nordic walking are feasible, enjoyable and have similar or superior effects on physical and mental health when compared to MICT. By combining HIIT and Nordic walking, HIIT-NoW may offer an alternative time-efficient whole-body exercise to improve physical and mental health of patients with CAD.

Conditions

Coronary Artery Disease

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: PREVENTION
• Blinding Strategy: SINGLE

Study Groups

High-intensity interval Nordic walking

Participants will receive high-intensity interval Nordic walking training.

Group Type: EXPERIMENTAL

High-intensity interval Nordic walking

Intervention Type: BEHAVIORAL

Participants will complete supervised exercise sessions twice weekly for 10 weeks. Exercise specialists will educate participants in proper use of walking poles and basic Nordic walking techniques and supervise the exercise training sessions. HIIT-NoW will be 45 min in duration using Nordic poles and consists of (i) a 10-min warm-up at 30-59% heart rate reserve (HRR, light-to-moderate intensity); (ii) 4 × 4 min of high-intensity work periods at 60-89% HRR (vigorous intensity) interspersed with 3 min of low-intensity work periods at 30-59% HRR (light-to-moderate intensity); and, (iii) a 10-min cooldown at 30-39% HRR (light intensity). To allow participants to acclimatize to the HIIT-NoW protocol, the training intensity will target 60-69% HRR for the first week, 70-79% HRR in the second week, and 80-89% HRR from the third week onward. If participants do not tolerate 89% HRR well, they will exercise as close to 89% HRR as possible.

Control

Participants will undergo standard cardiovascular rehabilitation.

Group Type: ACTIVE_COMPARATOR

Standard cardiovascular rehabilitation

Intervention Type: BEHAVIORAL

Individuals assigned to standard CR will attend onsite exercise-based CR comprised of one onsite exercise session per week for 8-10 weeks. The onsite CR offers exercise sessions tailored to the fitness of patients and strengthening exercise.

Interventions

High-intensity interval Nordic walking

Participants will complete supervised exercise sessions twice weekly for 10 weeks. Exercise specialists will educate participants in proper use of walking poles and basic Nordic walking techniques and supervise the exercise training sessions. HIIT-NoW will be 45 min in duration using Nordic poles and consists of (i) a 10-min warm-up at 30-59% heart rate reserve (HRR, light-to-moderate intensity); (ii) 4 × 4 min of high-intensity work periods at 60-89% HRR (vigorous intensity) interspersed with 3 min of low-intensity work periods at 30-59% HRR (light-to-moderate intensity); and, (iii) a 10-min cooldown at 30-39% HRR (light intensity). To allow participants to acclimatize to the HIIT-NoW protocol, the training intensity will target 60-69% HRR for the first week, 70-79% HRR in the second week, and 80-89% HRR from the third week onward. If participants do not tolerate 89% HRR well, they will exercise as close to 89% HRR as possible.

Intervention Type: BEHAVIORAL

Standard cardiovascular rehabilitation

Individuals assigned to standard CR will attend onsite exercise-based CR comprised of one onsite exercise session per week for 8-10 weeks. The onsite CR offers exercise sessions tailored to the fitness of patients and strengthening exercise.

Intervention Type: BEHAVIORAL

Eligibility Criteria

Inclusion Criteria

• patients with coronary artery disease treated with PCI or CABG;
• willing to come onsite for exercise sessions;
• able to perform a cardiopulmonary exercise testing (CPET); and,
• at least 40 years of age.

Exclusion Criteria

• currently participating in a CR program;
• unstable angina or established diagnosis of atrial fibrillation, chronic obstructive pulmonary disease, severe mitral or aortic stenosis, or hypertrophic obstructive cardiomyopathy; or,
• unable to return for 10-week follow-up visit.

• Minimum Eligible Age: 40 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Ottawa Heart Institute Research Corporation

OTHER

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

Jennifer L Reed, PhD

Role: PRINCIPAL_INVESTIGATOR

Ottawa Heart Institute Research Corporation

Locations

University of Ottawa Heart Institute

Ottawa, Ontario, Canada

Site Status: RECRUITING

Countries

Canada

Central Contacts

Jennifer L Reed, PhD

Role: CONTACT

JReed@ottawaheart.ca

613-696-7392

Matheus Mistura, MSc

Role: CONTACT

mistura@ottawaheart.ca

613-696-7000 ext. 15944

Facility Contacts

Jennifer L Reed, PhD

Role: primary

jreed@ottawaheart.ca

6136967392 ext. 67392

Matheus Mistura, MSc, BSc

Role: backup

mmistura@ottawaheart.ca

6136967000 ext. 15944

Other Identifiers

20220260

Identifier Type: -

Identifier Source: org_study_id