. Author manuscript; available in PMC: 2009 Oct 21.

Published in final edited form as: Cardiovasc Eng. 2008 Mar;8(1):60–71. doi: 10.1007/s10558-007-9045-5

Table 2.

Phase shifts between BP and BFV oscillations during the Valsalva maneuver and baseline conditions

	Control	Hypertensive	Stroke	P
VM oscillation period (s)	15.8 ± 6.9	19.0 ± 10.0	18.7 ± 6.8	0.58
VM BP–BFV phase shift (left)	66.6 ± 32.0	25.8 ± 38.0	16.1 ± 37.5	0.005
VM BP–BFV phase shift (right)	67.0 ± 34.4	31.9 ± 35.6	20.3 ± 30.4	0.007
Baseline oscillation period (s)	15.0 ± 10.1	16.5 ± 9.9	15.7 ± 8.2	0.94
Baseline BP–BFV phase shift (left)	60.1 ± 30.7	30.1 ± 26.1	26.5 ± 25.3	0.013
Baseline BP–BFV phase shift (right)	63.9 ± 27.4	29.4 ± 27.3	27.3 ± 40.1	0.017

Data are presented as mean ± SD

P values indicate between group comparisons