Figure 3.

Correlations between PVN blood-brain barrier permeability and autonomic parameters in sedentary and trained spontaneously hypertensive (SHR) and normotensive rats (WKY). In the SHR group, training-induced reduction in the leakage area was positively correlated with reduced systolic arterial pressure (SAP) variability, with its low frequency component (LF) and with decreased LF/HF ratio to the heart. Reduced leakage area was negatively correlated with increased pulse interval (PI) variability. Correlation coefficients and P-values for regression equations are presented in Table 4. ^*denotes a significant correlation.