Association of Exercise Capacity with Physical Functionality and Various Aspects of Fatigue in Patients with Coronary Artery Disease.

The aim of this study was to examine associations between exercise capacity-indexed as the metabolic equivalent of the task-and various aspects of subjective fatigue, physical functionality, and depression in patients with coronary artery disease. A cross-sectional design was used. Patients with stable coronary artery disease (N = 240) underwent an exercise stress test and completed self-report assessments of depression, subjective physical limitations, vital exhaustion, and the impact of fatigue on physical, social, and cognitive functions. Associations between exercise capacity and these self-report variables were assessed using bivariate correlations and a series of multivariate regressions. Exercise capacity was negatively associated with vital exhaustion, physical limitations, and impact of fatigue on physical and social functioning but not on cognitive functioning. There was a marginal association between exercise capacity and depression. The associations between exercise capacity and fatigue remained significant even after controlling for effects of age, body mass index, gender, education, and comorbid diabetes mellitus. The main conclusion of the study is that in patients with coronary artery disease, exercise capacity has the strongest predictability for physical fatigue, but, importantly, it also independently predicts the feeling of loss of energy and malaise.

Effects of moderate aerobic exercise training on hemorheological and laboratory parameters in ischemic heart disease patients.

BACKGROUND AND DESIGN: In this study we set out to determine the effects of long-term physical training on hemorheological, laboratory parameters, exercise tolerability, psychological factors in cardiac patients participating in an ambulatory rehabilitation program. METHODS: Before physical training, patients were examined by echocardiography, tested on treadmill by the Bruce protocol, and blood was drawn for laboratory tests. The enrolled 79 ischemic heart disease patients joined a 24-week cardiac rehabilitation training program. Blood was drawn to measure hematocrit (Hct), plasma and whole blood viscosity (PV, WBV), red blood cell (RBC) aggregation and deformability. Hemorheological, clinical chemistry and psychological measurements were repeated 12 and 24 weeks later, and a treadmill test was performed at the end of the program. RESULTS: After 12 weeks Hct, PV, WBV and RBC aggregation were significantly decreased, RBC deformability exhibited a significant increase (p<0.05). Laboratory parameters (triglyceride, uric acid, hsCRP and fibrinogen) were significantly decreased (p<0.05). After 24 weeks the significant results were still observed. By the end of the study, IL-6 and TNF-α levels displayed decreasing trends (p<0.06). There was a significant improvement in MET (p<0.001), and the BMI decrease was also significant (p<0.05). The vital exhaustion parameters measured on the fatigue impact scale indicated a significant improvement in two areas of the daily activities (p<0.05). CONCLUSIONS: Regular physical training improved the exercise tolerability of patients with ischemic heart disease. Previous publications have demonstrated that decreases in Hct and PV may reduce cardiovascular risk, while a decrease in RBC aggregation and an increase in deformability improve the capillary flow. Positive changes in laboratory parameters and body weight may indicate better oxidative and inflammatory circumstances and an improved metabolic state. The psychological findings point to an improvement in the quality of life.

[Outpatient cardiac rehabilitation: initial experience in the first Hungarian multicenter study]. / Járóbetegformában végzett kardiológiai rehabilitácio: az elsô hazai kontrollált multicentrikus tanulmány néhány eredménye.

INTRODUCTION: This paper assesses the first controlled multicentric investigation of outpatient cardiac rehabilitation in Hungary. Framing and starting of the program was carried out beside the Hungarian experts by the United States Department of Health and Human Services. AIMS: To prove the extreme importance of cardiac rehabilitation, both inpatient and outpatient, after the hospital treatment of cardiac emergencies. METHODS: 531 patients were collected at the beginning of the study from three Hungarian cardiological centers having cardiac surgery and cardiac rehabilitation ward. 167 patients were ranked into the outpatients group (Group A), 311 were rehabilitated in hospital (Group B) and 53 served as control (group C). After physical, ergometric and echocardiographic examinations and psychometric evaluation (Beck and WHOBREF questionnaires) the patients of Group A and B performed a conducted training three times weekly for 3 months. All the patients were examined 3 and 12 months later. RESULTS: Significant improvement of ergometric data was observed in both groups of patients who underwent rehabilitation training, but this was not the case with control patients. This improvement could not be observed after one year. The number of anginal attacks and the need of hospital treatment also showed a significant reduction in Groups A and B. CONCLUSIONS: The data have proved that cardiac rehabilitation has an extremely important role in the stabilisation of heart functions and general health of patients after acute myocardial infarction or heart surgery. It was also proved, that 12-week rehabilitation training is not sufficient to achieve long-term stabilization. Sufficient data have accumulated during the study about the effectiveness and safety of outpatient cardiac rehabilitation as an alternative to inpatient service.