Table 1.

Hemodynamic responses during graded lower body negative pressure (LBNP; n = 18)

	LBNP −10 mmHg	LBNP −30 mmHg	LBNP −50 mmHg	Significance
RBV	−7.1 ± 2.2	−11.9 ± 3.0	−18.8 ± 5.1	P < 0.006
MAP	0.6 ± 0.9	1.6 ± 1.4	3.6 ± 1.9	NS
HR	2.0 ± 1.1	15.5 ± 2.8	39.3 ± 7.4	P < 0.001

Δ%s data are presented as mean ± s.e.m. P-values denote results from one-way analysis of variance performed on Δ% data. RBV, renal blood flow velocity; MAP, mean arterial pressure; HR, heart rate.