Smartphone-Guided weight loss trial aims to boost heart health in obese patients

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: 1. Age range: 18-65 years old . 2. History of coronary heart disease confirmed by coronary angiography or coronary CTA, showing ≥50% stenosis in at least one major coronary artery (left main coronary artery, left anterior descending artery, left circumflex artery, right coronary artery); or a definite history of myocardial infarction, or prior coronary revascularization (PCI or CABG). 3. BMI: Body Mass Index (BMI) ≥ 28 kg/m² 4. Weight loss willingness: Has the intention to lose weight 5. Smartphone proficiency: Able to use a smartphone. 6. Daily living ability: Capable of performing basic activities of daily living independently. 7. Informed consent: Voluntarily participates in the study, signs a written informed consent form, and is willing to cooperate with follow-up Exclusion Criteria: 1. Unstable angina pectoris or acute myocardial infarction occurring within the previous month; 2. Comorbid endocrine or neurological diseases, cancer, or a history of bariatric surgery that affect body weight; or long-term use of medications that impact body weight; 3. Comorbid diseases that affect exercise capacity, such as severe cardiopulmonary diseases or osteoarthritic conditions; 4. Comorbid diseases that affect diet, such as severe mental disorders, bulimia or anorexia nervosa, or cognitive dysfunction; 5. Significant liver or kidney dysfunction, defined as: glomerular filtration rate \< 60 ml/(min·1.73m²) or undergoing dialysis; alanine transaminase (ALT) or aspartate transaminase (AST) ≥ 3 times the upper limit of the normal range specified by the research center; 6. Severe language, psychological, or physical disabilities that prevent participation in the protocol; 7. Pregnant or lactating women, or individuals of childbearing potential who are unwilling/unable to use effective contraceptive measures; 8. Participation in other interventional clinical trials; 9. Body weight change exceeding 5% within the past year; 10. Patients with a habit of long-term high-intensity exercise(more than 2 sessions per week of high-intensity endurance training, or more than 3 sessions per week of moderate-intensity endurance training); 11. Patients deemed unsuitable for participation in the study by the researchers.