Fig. 5

Correlation plots and Bland–Altman plots for DBP and SBP estimation during static squatting exercise. a Reference DBP plotted against estimated DBP using the proposed method (R = 0.854). b Reference SBP plotted against estimated SBP using the proposed method (R = 0.915). c Bland–Altman plot of the estimated DBP using the proposed method with mean difference marked in solid red line and ± 1.96 standard deviation marked in dashed black lines. d Bland–Altman plot of the estimated SBP using the proposed method with mean difference marked in solid red line and ± 1.96 standard deviation marked in dashed black lines