Typical tracing from a rat from each group [sham operated (sham)-sedentary (Sed), heart failure (HF)-Sed, sham-exercise training (ExT), and HF-ExT] showing heart rate [HR; in beats/min (bpm)], mean arterial pressure (MAP), pulsatile arterial pressure (AP), and integrated renal sympathetic nerve activity (Int RSNA) responses to electrical aortic depressor nerve (ADN) stimulation at 5, 10, 20, and 40 Hz. Bar = 1 min.