. 2016 Apr 18;12(3):308–315. doi: 10.3988/jcn.2016.12.3.308

Table 5. BPV of SBP in healthy controls and stroke patients.

BPV parameter	Subjects	Baseline	ECP	p^†	Change during ECP from baseline (%)	After ECP	p^‡	Change after ECP from baseline (%)
VLF SBP, mm Hg	Control	5.71 (2.98, 20.31)	4.77 (1.60, 11.10)	0.008	-40.57 (-46.34, -6.35)	1.50 (0.78, 3.12)	0.001	-73.86 (-85.82, -64.30)
VLF SBP, mm Hg	Stroke	11.43 (4.62, 29.82)	6.70 (3.43, 22.34)	<0.001	-23.20 (-45.17, -5.16)	5.38 (2.24, 13.27)	<0.001	-53.25 (-69.58, -20.92)
LF SBP, mm Hg	Control	7.59 (3.81, 18.05)	6.80 (2.39, 16.97)	0.007	-28.06 (-38.13, -7.20)	2.15 (1.43, 5.24)	0.011	-59.89 (-77.90, -45.95)
LF SBP, mm Hg	Stroke	5.09 (2.32, 9.34)	5.35 (2.10, 8.30)	0.013	-12.19 (-28.49, 0.91)	3.41 (1.74, 5.89)	<0.001	-29.94 (-51.80, -9.20)^*
HF SBP, mm Hg	Control	1.80 (0.90, 6.00)	1.33 (0.55, 4.64)	0.331	-27.02 (-31.87, -23.69)	0.80 (0.47, 1.79)	0.010	-59.27 (-70.86, -49.30)
HF SBP, mm Hg	Stroke	2.28 (1.48, 6.58)	1.86 (1.14, 4.04)	<0.001	-16.59 (-26.98, -9.43)	1.96 (1.21, 3.41)	<0.001	-22.42 (-41.96, -1.62)*
TP SBP, mm Hg	Control	13.18 (8.72, 43.39)	13.30 (4.86, 32.10)	0.001	-31.44 (-38.54, -24.19)	4.63 (2.72, 9.57)	0.001	-71.13 (-75.87, -55.93)
TP SBP, mm Hg	Stroke	18.41 (9.90, 45.07)	15.52 (6.60, 32.71)	<0.001	-23.62 (-33.97, -10.74)	10.67 (6.18, 19.83)	<0.001	-44.56 (-61.57, -22.52)^*
LF/HF, SBP	Control	0.97 (0.56, 1.71)	1.33 (0.63, 2.27)	0.876	22.87 (6.85, 50.17)	1.12 (0.79, 1.88)	0.331	50.83 (-25.50, 103.66)
LF/HF, SBP	Stroke	0.45 (0.32, 0.93)	0.65 (0.38, 1.15)	0.074	23.30 (-15.92, 80.43)	0.62 (0.33, 1.04)	0.049	27.11 (-14.36, 77.61)

Data are mean (range) values.

^*p<0.05 relative to control, p^†: comparing between during ECP and baseline, p^‡: comparing between after ECP and baseline.

BPV: blood pressure variability, ECP: external counterpulsation, HF: high frequency, LF: low frequency, SBP: systolic blood pressure, TP: total power spectral density, VLF: very low frequency.