Unobtrusive Technologies for Monitoring of Autonomic Nervous System Function in Elderly Frail Patients

Unobtrusive Technologies for Monitoring of Autonomic Nervous System Function in a Setting of Inpatient Cardiac Rehabilitation and Home Training Program in Elderly Patients With Different Frailty Stages

To develop and investigate an unobtrusive technology for long-term monitoring of autonomic nervous system (ANS) function's response to daily physical stressors and exercise training for elderly patients with different frailty stages.

Inclusion Criteria:

• Patients admitted to CR after open heart surgery.
• Age 65 years and older.
• 6-minute walk distance (6-MWD) ≥150 meters.
• Patient's agreement to participate in the study.
• Edomonton Frailty Scale score 5 points and more

Exclusion Criteria:

• Cardiac devices (due to artificially altered heart rate series)
• Diseases in the musculoskeletal system or other organs complicating physical activity and exercise training;
• Exercise-limiting comorbidities (primarily orthopedic and neurological conditions that would exclude individuals from participating in CR according to study protocol), including chronic heart failure New York Heart Association Class IV, hemoglobin less than 9 g/dL, wound healing disturbance, cognitive or linguistic deficits.