Upper: Average mid frequency (MF, 0.25–0.6 Hz) MAP power (mmHg)2, MF HR power (bpm)2, Middle: Coherence (units), baroreflex gain, (gain, bpm/mmHg), Lower: low frequency (LF, 0.05–0.25 Hz) and high frequency (HF, 0.6–1.0 Hz) MAP power (mmHg)2 from cross spectral analysis during the light (inactive) phase (left bars white), and dark (active) phase (right bars, shaded).
Measurements are 2 weeks after vehicle (V, open bars), perindopril (P, hatched bars) and rilmenidine (R, crosshatched bars) in SHR (n = 7–9 per group). Values are mean ± SEM. Effect of perindopril or rilmenidine compared with vehicle *, P<0.05; **, P<0.01; ***, P<0.001.
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