REmotely Monitored, Mobile Health Supported Multidomain Rehabilitation Program With High Intensity Interval Training for COVID-19

Eligibility Criteria

• * Primary diagnosis of COVID-19 requiring hospital admission
• * Discharged or expected to be discharged directly home from the hospital (not to a skilled nursing facility, inpatient rehabilitation center, or long-term acute care hospital)
• * Able to ambulate with or without a gait aid prior to hospital discharge
• * Age ≥ 18 years
• * Hospital discharge \> 60 days unless readmitted to hospital in first 30 days, then 60 day window restarts and new exclusion is last hospital discharge \> 60 days
• * Not ambulating independently prior to COVID-19 illness (use of a gait aid permitted)
• * Functional impairment resulting in inability to exercise at baseline
• * Inability or unwillingness to comply with the study requirements or unable or unwilling to follow coaching via mobile-health iPhone interaction
• * Any absolute contraindications to exercise, including but not limited to:
• * Recent (\< 5 days) acute primary cardiac event
• * Unstable Angina
• * Uncontrolled dysrhythmias causing symptoms or hemodynamic compromise
• * Uncontrolled hypertension over 255 mmHg Systolic or 155 diastolic blood pressure
• * Symptomatic aortic stenosis
• * Uncontrolled symptomatic heart failure
• * Acute myocarditis or pericarditis
• * Suspected or known dissecting aneurysm
• * Any adverse changes during GXT (i.e., persistent oxygen saturation drop below 88% while on prescribed oxygen therapy or significant hypotension such as mean arterial blood pressure \< 60 mmHg on 2 consecutive readings within 1 minute)
• * High risk for non-adherence as determined by screening evaluation
• * Any condition, including cognitive impairment, that, in the judgment of the investigator, precludes participation because it could affect subject safety or ability of subject to complete the study
• * Pregnant