Effect of Early Mobilization Exercises After Coronary Artery Bypass Graft

A) Procedure for evaluation and training Equipment: The following instruments will be used: * Pulse oximeter: It will be used for measuring oxygen saturation and Heart rate before, during, and after sessions and during exercise test * Intelligent cardiac monitor: used during 6MWT to detect any adverse events during and immediately after the test and also be used during sessions * Rating of perceived exertion: to estimate effort and exertion during the test and working phase. * Cycle ergometer: upper and lower pedaling machine will be adjusted to suit all patients' height during exercise sessions * Dumbbells and weights will be used during exercise sessions Exercise (treatment) procedures * Group (A): (usual care group): Start early mobilization exercises and deep breathing exercises with wound support daily * Group (B): (aerobic exercise group): Patients in this group will receive usual care and cycle ergometer aerobic exercise Mood of exercise: continuous aerobic exercise * Modality of exercise: cycle ergometer with upper and lower pedaling at the same time with adducted shoulders. * Intensity of exercise: low to moderate intensity and HR (calculated as recommended by the American College of Sports Medicine (ACSM) and tolerated up to 20-30 bpm above the resting HR), BP, SpO2 and low to moderate rate of perceived exertion through the Borg Scale (10-13) will be monitored during cycling * Duration: 15-20 min, including 5 min warm-up, 5 min cool down and a working phase from 5-10 min * Frequency: Daily until discharge * Group (C): (resisted exercise group): Patients in this group will receive usual care and resisted exercise * Mode: Resisted exercise * Modality: dumbbells or sandbags tied around main groups of muscles Resistance exercises consisted of muscle training with dumbbells for the upper limb (UL) (biceps, triceps, and shoulder flexors) and sandbags for the lower limb (LL) (quadriceps, hamstrings, abductors, and calves). Intensity of exercise: the load that the patient can lift for 10-12 repetitions at RPE of 10-13 and 1-2 sets Both the aerobic exercise group and the resistance exercise group will be guided by wearable artificial intelligence ECG monitors to provide real-time support and guidance and stop exercise when adverse events occur.