Quality of life / Muscle strength / Heart Failure / Humans / Walking / Female / Male / Oscillations / Middle Aged / Respiratory Muscles / Inhalation / Public health systems and services research / Exercise Test / Oxygen Consumption / Exercise Tolerance / Inspiratory Muscle Training / The American / Female / Male / Oscillations / Middle Aged / Respiratory Muscles / Inhalation / Public health systems and services research / Exercise Test / Oxygen Consumption / Exercise Tolerance / Inspiratory Muscle Training / The American
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