Group A will undergo a moderate-intensity aerobic training program as part of a structured cardiac rehabilitation protocol. The program will be supervised sessions, conducted three times per week for 12 weeks. Each session will include approximately 30 minutes of aerobic exercise performed on a bicycle ergometer at an intensity of 60% of heart rate reserve (HRR)

The Six-Minute Walk Test (6MWT) is a simple, submaximal test that evaluates functional capacity and exercise capacity in patients with chronic heart failure by measuring the distance walked and estimating peak VO2. It will be performed in a 30-meter corridor, where participants will walk as far as possible in six minutes, with heart rate and oxygen saturation monitored before and after the test. This study tested the validity and reliability of the six-minute walk test (6MWT) in cardiac rehabilitation patients, including those with heart failure.

EuroQol 5-Dimension Questionnaire (EQ-5D): The EuroQol-5 Dimension (EQ-5D) is a questionnaire used to measure quality of life (QoL). It evaluates five key areas: mobility, self-care, usual activities, pain/discomfort, and anxiety/depression. Each area has one question, and responses together describe a person's overall health status. For the 5L, scores range from 5 to 25. A lower score indicates better health, while a higher score indicates greater health problems. Patients rate their overall health TODAY on a vertical scale from 0 (worst imaginable health) to 100 (best imaginable health)