Aerobic Exercise on Ventilatory Efficiency in CAD Patients

Effect of Aerobic Exercise Training on Ventilatory Efficiency in Patients With Coronary Artery Disease

The purpose of the present study was to test the hypothesis that patients with coronary artery disease with lower aerobic fitness exhibit greater responsiveness on improving ventilatory efficiency after aerobic exercise training.

Measurements of ventilatory efficiency during cardiorespiratory exercise testing typically expressed as the minute ventilation/ carbon dioxide production ratio have been validated to be useful in assessing the presence and severity of both heart and lung diseases. In this context, previous studies have showed ventilatory inefficiency in patients with coronary artery disease suggests abnormalities in the distribution of ventilation and perfusion in the lungs. In addition, a growing body of studies has demonstrated that lower ventilatory efficiency during exercise is considered an important predictor of risk mortality, hospitalization, and other outcomes than peak VO2.

Inclusion Criteria:

• was stable coronary artery disease diagnosed by coronary angiography

Exclusion Criteria:

• unstable angina pectoris,
• complex ventricular arrhythmias,
• pulmonary congestion and
• orthopaedic or neurological limitations to exercise