Conclusions Exercise-based cardiac rehabilitation is effective at reducing important clinical outcomes in patients with coronary heart disease .
While our analysis was constrained by the quality of included trials and missing information about intervention components , there appears to be little differential effect of variations in exercise intervention , particularly on mortality outcomes .
Background While the clinical benefits of exercise-based cardiac rehabilitation are well established , there is extensive variation in the interventions used within these trials .
It is unknown whether variations in individual components of these exercise interventions provide different relative contributions to overall clinical outcomes .
This study aims to systematic ally examine the relationship between individual components of the exercise intervention in cardiac rehabilitation ( such as intensity and frequency ) and clinical outcomes for people with coronary heart disease .
Coronary heart disease risk factors before and after bypass surgery: results of a controlled trial on multifactorial rehabilitation.
The effect of a three-phase multifactorial institution-based rehabilitation programme on coronary heart disease ( CHD ) risk factors was studied in an open r and omised trial comprising 228 patients undergoing coronary artery bypass surgery allocated into a rehabilitation ( R ) group ( n = 119 ) and a hospital ( H = control ) group ( n = 109 ) . Follow-up examinations were performed at 6 and 12 months . Serum total cholesterol and triglyceride levels decreased significantly in both groups during follow-up . These decreases were not significantly different between the R and H groups . Serum high density lipoprotein ( HDL ) cholesterol level increased significantly at 6 and 12 months in the R group , but not in the H group . The differences in the changes between the groups were not significant . The ratio of serum HDL cholesterol to total cholesterol increased significantly in the R group from the preoperative value of 0.154 to 0.179 ( P less than 0.001 ) at 6 months and to 0.180 ( P less than 0.001 ) at 12 months . In the H group these values were 0.152 , 0.166 ( P less than 0.001 ) and 0.168 ( P less than 0.001 ) , respectively . The significance of the differences in the changes between the groups were P = 0.01 at 6 months and 0.06 at 12 months . These differences were more obvious in patients aged 55 years or under . There was a significant decrease ( P = 0.005 ) in the proportion of smokers in the R group and a significant increase in the proportion of patients taking regular exercise in both groups as assessed by question naire . ( ABSTRACT TRUNCATED AT 250 WORDS
Conclusions Exercise-based cardiac rehabilitation is effective at reducing important clinical outcomes in patients with coronary heart disease .
While our analysis was constrained by the quality of included trials and missing information about intervention components , there appears to be little differential effect of variations in exercise intervention , particularly on mortality outcomes .
Background While the clinical benefits of exercise-based cardiac rehabilitation are well established , there is extensive variation in the interventions used within these trials .
It is unknown whether variations in individual components of these exercise interventions provide different relative contributions to overall clinical outcomes .
This study aims to systematic ally examine the relationship between individual components of the exercise intervention in cardiac rehabilitation ( such as intensity and frequency ) and clinical outcomes for people with coronary heart disease .