Fig. 2.

Blood pressure (BP) response in male F344BN rat fed NF or HF diets for 8 wk (n = 6 rats/group). A: radiotelemetry recording of weekly mean arterial blood pressure (MAP) over the course of the study. B: ΔMAP (from baseline) after 2, 4, 6, and 8 wk of treatment. C: diurnal rhythm of diastolic and systolic BP expressed as a ratio of night-to-day recordings. *Significant difference (P < 0.05) between treatments by unpaired t-test. Both NF and HF-fed rats had significant increases in MAP with time (two-way ANOVA). ΔMAP for HF rats was significantly (P < 0.05) higher after 4 wk. No treatment differences in diurnal rhythmicity was found.