Short- and Longer-Term Association Between Body Mass Index and Health Status in Cardiac Rehabilitation Patients

The association between body mass index (BMI) and subjective health status before and after cardiac rehabilitation (CR) and 1 year later was compared in patients undergoing primary percutaneous coronary intervention (pPCI) who did (CR group) and did not receive CR (no-CR group). The aim was to investigate the association between BMI and subjective health status based on the Short Form-12 questionnaire. Between 2009 and 2011, 242 patients with pPCI with an acute myocardial infarction completed a CR program and were compared with 115 patients in the no-CR group. All patients completed the Short Form-12 questionnaire at baseline, at 12 weeks, and at 1-year followup. The CR program consisted of a 2 sessions per week for 1.5 hours each for 12 weeks. Patients were categorized into 3 groups based on BMI: normal weight, overweight, and obese. Compared with patients in the no-CR group, CR group patients in the overweight group significantly improved their subjective health status after CR and these improvements were sustained at 1-year followup. CR patients in the normal weight and obese groups did not significantly improve subjective health status. The overweight patients had the highest improvement in subjective health status (OR = 3.4 post-CR and 5.1 at 1 year of followup). After CR, overweight patients showed the best improvement in subjective health status. CR did not significantly improve subjective health status in normal-weight and obese patient