IRCT20240306061197N1 IRCT 2024-04-14 Shahid Beheshti University of Medical Sciences The Effect of Breathing Exercises on Fatigue Severity, Dyspnea, and Functional Classification in Patients with Heart Failure The Effect of Breathing Exercises on Fatigue Severity, Dyspnea, and Functional Classification in Patients with Heart Failure 2024-04-08 anticipated 100 Complete https://irct.ir/trial/75896 interventional Randomization: Randomized, Blinding: Not blinded, Placebo: Not used, Assignment: Parallel, Purpose: Supportive, Other design features: The study will have three groups, including a control group, a group of diaphragmatic and pursed-lip breathing exercises, and an incentive spirometry group, Randomization description: The sealed envelope method will be used for simple random division. Each participant will draw a sealed envelope containing a number between 1 and 3. Patients who draw number 1 will be placed in the control group, number 2 in the diaphragmatic and pursed-lip breathing exercises group (DG), and number 3 in flow-oriented incentive spirometry. N/A Heart failure. Intervention 1: Intervention group 1: diaphragmatic and pursed-lip breathing exercises, thrice a day for 10 days and each time for 10 minutes. take a 2-minute rest for every 1 minute of performing the breathing exercises (10 breaths/minute). Intervention 2: Intervention group 2: use of flow-oriented spirometry three times a day for 10 days. Each time, two rounds of 10 breaths and a few minutes of rest between each round. Intervention 3: Control group: Continue the usual treatments and care. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is There is no further information