Exercise training and pacing status in patients with heart failure: results from HF-ACTION.
Zeitler EP, Piccini JP, Hellkamp AS, Whellan DJ, Jackson KP, Ellis SJ, Kraus WE, Keteyian SJ, Kitzman DW, Ewald GA, Fleg JL, PiƱa IL, O'Connor CM. Exercise training and pacing status in patients with heart failure: results from HF-ACTION. J Card Fail. 2015 Jan; 21(1):60-7.