Physical working capacity and central hemodynamics in patients with myocardial infarction after coronary artery bypass grafting and coronary balloon angioplasty, during out-patient rehabilitation and free-choice workload physical training

Abstract

Aim. To investigate parameters of physical working capacity (PWC) and central hemodynamics in myocardial infarction (MI) patients who underwent coronary artery bypass grafting (CABG), coronary balloon angioplasty (CBA), or no vascular intervention. Material and methods. All 125 MI patients (mean age 51.6±1.8 years) underwent bicycle stress test and echocardiography (EchoCG) at baseline, and after 3, 6, and 12 months of the follow-up. The main group (n=90) was divided into three subgroups: A – after CABG, B – after CBA, and C – without any vascular intervention. All patients from the main group attended bicycle training sessions, with free-choice workload regimen. Results. In subgroup A, PWC had increased by Month 6 and remained at this level up to Month 12; regression of left ventricular remodeling (LVR) was also observed. In subgroups B and C, PWC increased during the whole rehabilitation period. According to dynamic EchoCG, in subgroup B, LVR was delayed, and in subgroup C, LFR had regressed by Month 3 and remained at that level up to Month 12. Conclusion. Bicycle training in free-choice workload regimen improved PWC and facilitated LFR regression.

Keywords

• myocardial infarction
• out-patient rehabilitation
• physical training