Fig. 2

Cerebrovascular declines along with age . a Spearman’s correlation coefficient profiles of clinical indices with ages in older adults. ∗P < 0.05, ∗∗P < 0.01 and ∗∗∗P < 0.001. b-e Spearman’s correlation profiling (left) and comparisons between the young and the older adults (right) for age-related indices including SBP (b), CVHI Score (c), Vmean (d), Vmin (e). BMI, body mass index; SBP, systolic blood pressure; DBP, diastolic blood pressure; CVHI, cerebral vascular hemodynamics indices; Qmean, mean blood flow rate; Vmean, mean blood flow velocity; Vmax, maximum blood flow velocity; Vmin, minimum blood flow velocity; Wv, pulse wave velocity; Zcv, characteristic impedance; DI, dilatability; Rv, resistance vascular; DR, dynamic resistance; CP, critical pressure; DP, diastolic pressure and critical pressure difference. ∗∗∗P < 0.001