The purpose of this study is to determine whether ejection fraction and peak oxygen uptake have correlation on inspiratory muscle strength, chest wall volumes and quality of life in individuals with heart failure.

Inclusion Criteria:

• Will be included individuals diagnosed with heart failure, both sexes, aged 18-65 years;
• hemodynamically stable (systolic blood pressure ≤ 140 mmHg; diastolic blood pressure ≤ 90 mmHg; heart rate = 90 bpm);
• self-reported sedentary.

Exclusion Criteria:

• Will be excluded individuals with unstable angina were excluded;
• acute myocardial infarction or previous surgery up to three months before the survey;
• musculoskeletal changes, respiratory or chronic metabolic diseases;
• treatment with steroids, hormones or chemotherapy;
• gestation;
• smokers and former smokers assets or liabilities;
• inability to comply with verbal commands appraiser or unsuitability to the evaluation devices.

Both female and male participants are being studied, between 18 to 65 years old, diagnosed with heart failure.