In chronic heart failure patients(CHF), EPC mobilization was acutely increased after high intensity intervaltraining or moderate intensity continuous exercise training, while findings wereinconclusive after maximal exercise testing performed on a cycle ergometer [85].In CHF patients, CD34+/KDR+ EPC numbers increased within 10-minutesfollowing graded-exercise testing and remained elevated for up to 2 hourspost-exercise [86]. This evidence concerns the gene CD34 and congestive heart failure.