Effect of High-Intensity Interval Training Versus Home-Based Rehabilitation Program On Patients Underwent Coronary Artery Bypass Graft Surgery

August 18, 2026 updated by: Mohammed Obaid Almuzaini, Kafrelsheikh University

Effect of High-Intensity Interval Training Versus Home-Based Rehabilitation Program on Peak Metabolic Equivalents On Patients Underwent Coronary Artery Bypass Graft Surgery

  1. To assess the effect of high-intensity interval training on peak metabolic equivalents in patients with coronary heart disease after the coronary artery bypass grafting surgery.
  2. To assess the effect of a home-based cardiac rehabilitation program on peak metabolic equivalents in patients with coronary heart disease after coronary artery bypass grafting surgery.
  3. To compare functional outcomes between the different treatment approaches.

Study Overview

Status

Recruiting

Conditions

Intervention / Treatment

Detailed Description

Cardiovascular disease (CVD), a leading cause of death in the U.S., is primarily driven by coronary artery disease (CAD), which accounts for 85% of related fatalities. The Coronary Artery Bypass Grafting (CABG) procedure, used to treat blocked arteries, can lead to complications like reduced cardiopulmonary function and decreased physical activity post-surgery. To combat these issues, cardiac rehabilitation (CR) is recommended, incorporating exercise, dietary changes, and stress reduction. Research indicates that CR, particularly high-intensity interval training (HIIT), is safe for coronary artery disease patients and effectively enhances cardiopulmonary fitness. Maintaining exercise capacity is critical as it significantly correlates with improved survival rates in Cardiovascular disease patients. Despite evidence supporting cardiac rehabilitation's benefits, participation rates remain low, highlighting a need for sustained exercise habits post-rehabilitation. Home-based CR has shown effectiveness comparable to outpatient programs, although long-term benefits remain uncertain due to insufficient follow-up studies.

Study Type

Interventional

Enrollment (Estimated)

84

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Locations

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  1. Participants will be eligible if they are clinically stable as defined by the American College of Cardiology/American Heart Association.
  2. Only Participants will be stratified as low to moderate risk as identified by the American College of Sport Medicine/
  3. Mean age ± standard deviation, 55 ± 3 years.
  4. All patients underwent coronary artery bypass graft surgery, rested at home for at least one month, and then returned to the center for a cardiac rehabilitation program

Exclusion Criteria:

  1. Patients will be excluded from this study if they had an ejection fraction of less than 40% at rest (high risk as defined by American Association of Cardiovascular and Pulmonary Rehabilitation Stratification).
  2. Mental health disorders (such an anxiety or depression).
  3. Any vision or hearing defects or any neurological, respiratory, or musculoskeletal conditions that have an impact on ambulation.
  4. Irreversible heart failure.
  5. Myocardial Infarction (MI) over the past month.
  6. Persistent ventricular arrhythmias or unstable angina.
  7. Any exercise restrictions.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Single

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: High Intensity Interval Training program
Twenty-eight patients will receive a high-intensity interval training program for four weeks
Other: High Intensity Interval Training program
High-Intensity Interval Training (HIIT) includes a 5-minute warm-up, followed by a 3-minute training session at 60% to 70% of heart rate reserve and four 4-minute high-intensity intervals at 80% to 90% of heart rate reserve. Each interval is followed by a 3-minute active recovery at 60% to 70% of heart rate reserve, concluding with a 4-minute cool-down. Subjects without balance or leg issues performed treadmill exercises, while those with such complaints used a leg ergo-cycle.
Experimental: home-based cardiac rehabilitation intervention
Twenty-eight patients will receive a home-based cardiac rehabilitation intervention for four weeks
Other: home-based cardiac rehabilitation intervention
The home-based cardiac rehabilitation program utilizes Physio-tools software for exercise management. Participants will receive a data sheet for exercise logging, a color-coded program, and a Polar watch. Weekly phone support will provide encouragement and answer questions. The program involves moderate-intensity exercises, 3 times a week, including circuit training for 45 minutes, with structured warm-up, aerobic, and cool-down phases.
Active Comparator: no intervention
all participants will be given an instruction booklet that contains instructions and precautions about surgery, wound care and encouragement to be active.
Other: no intervention program
The control group had no intervention program. Based on current standard practice, all participants will be given an instruction booklet that contains instructions and precautions about surgery, wound care and encouragement to be active.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
assessment of Exercise capacity
Time Frame: At baseline and after 4 weeks
Exercise capacity will be evaluated through a symptom-limited graded treadmill exercise test following the Bruce protocol, starting at 1.7 mph and a 10% incline. The intensity will increase every 3 minutes until the participant reaches exhaustion or meets clinical termination criteria. Capacity will be measured in metabolic equivalents (METs), with peak metabolic equivalents calculated based on the highest workload achieved. Estimated oxygen consumption will be expressed in mL·kg-¹·min-¹ and converted to METs. The main outcome will be the change in peak metabolic equivalents from baseline to post-intervention assessment.
At baseline and after 4 weeks

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Kafrelsheikh University

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

July 1, 2026

Primary Completion (Estimated)

December 1, 2026

Study Completion (Estimated)

February 1, 2027

Study Registration Dates

First Submitted

July 28, 2026

First Submitted That Met QC Criteria

August 18, 2026

First Posted (Actual)

August 20, 2026

Study Record Updates

Last Update Posted (Actual)

August 20, 2026

Last Update Submitted That Met QC Criteria

August 18, 2026

Last Verified

August 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • Mohamed_Msc

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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