Fig. 1.

Central and peripheral hemodynamic responses to passive exercise in heart transplant (HTx) recipients and controls. Values are means ± SE of passive leg blood flow (A), control leg blood flow (B), cardiac output (CO; C), heart rate (HR; D), stroke volume (SV; E), and mean arterial pressure (MAP; F) for the first 40 s of the exercise protocol. bpm, Beats/min. The transition from rest to movement occurs at 0 on the axis. Note: these figures are presented to illustrate the general trends. As the analyses were performed on data from individuals who exhibited varying response kinetics, averaging removes some of the information in the original individual recordings. Therefore, maximum change tends to be underestimated here but is represented in Fig. 2.