Clinical Research Directory

Inclusion Criteria: 1. History of ACS (unstable angina, NSTEMI, and STEMI, defined per current AHA/ACC criteria); 2. Age ≥ 18; 3. Being physically inactive (i.e., \< 150 min/week of moderate-intensity aerobic PA); 4. Absence of contraindications to physical exercise per the participant's provider evaluation; 5. Access to a digital device with internet connection; 6. Having an active email account and ability to check email at least weekly; 7. Physician clearance to participate in low-moderate intensity exercise (tai chi), including a statement that there is no contraindication to exercise based on post-ACS stress test and other factors, as appropriate; 8. English speaking Exclusion Criteria: 1. Inability or unwillingness to give informed consent; 2. Blood pressure \>200/110 or orthostatic systolic blood pressure decrease \>20 mmHg at the baseline visit; 3. Uncontrolled/untreated atrial or ventricular arrhythmias or 3rd degree AV block; 4. Within 3 months of a diagnosis of pericarditis or myocarditis; 5. Medical conditions likely to limit lifespan to less than one year; 6. New York Heart Association (NYHA) functional class IV; 7. Severe cognitive impairment (BOMC \>10);139 8. Orthopedic problems prohibiting TC practice; 9. Ongoing TC or other mind-body training (i.e., meditation, TC, or yoga) at least weekly; 10. Current enrollment in cardiac rehabilitation; 11. Untreated severe depression (PHQ\>=20); 12. Conditions likely to affect study compliance (i.e., moving out of study area, substance use, ongoing untreated psychosis); 13. Symptoms of unstable cardiovascular disease (e.g., shortness of breath or chest pain at rest and/or Canadian Cardiovascular Society Angina Class III-IV)