http://circ.ahajournals.org/content/107/8/1210 http://circ.ahajournals.org/content/107/8/1210 Exercise and Heart Failure AHA Scientific Statement: Exercise and Heart Failure http://circ.ahajournals.org/content/107/8/1210 AHA Scientific Statement: Exercise and Heart Failure AHA Scientific Statement: Exercise and Heart Failure http://circ.ahajournals.org/content/107/8/1210