RT Journal Article SR Electronic T1 Cycle exercise causes a lower ventilatory response to exercise in chronic heart failure JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 225 OP 226 DO 10.1136/hrt.2003.026567 VO 91 IS 2 A1 K K A Witte A1 A L Clark YR 2005 UL http://heart.bmj.com/content/91/2/225.abstract AB