Fig. 2.

Twenty-four-hour mean arterial blood pressure (MAP) (A) and heart rate (B) tracings in Dahl S rats fed Teklad (N = 6) or AIN (N = 4) standard chow diets since weaning (3 wk old). Twelve-hour MAP (C) and heart rate (D) (at 15 wk, 5 and 6 days old, and at 16 wk old) are shown. At 12 wk old, weaning-diet groups were divided, with a subset of rats undergoing a diet switch, thereby generating two additional diet groups: Teklad→AIN (N = 6) and AIN→Teklad (N = 3). Values are means ± SE. Data were analyzed by two-way ANOVA. N, night; D, day; bpm, beats per minute.