Swimming Exercise Changes Hemodynamic Responses Evoked by Blockade of Excitatory Amino Receptors in the Rostral Ventrolateral Medulla in Spontaneously Hypertensive Rats

Table 2

Mean arterial pressure (MAP, mmHg) and heart rate (HR, bpm) before and after i.v. L-NAME 25 𝜇mol/kg, change in mean arterial pressure (ΔMAP, mmHg), change in heart rate (ΔHR, bpm), and percent change in hindlimb (%ΔHC) and mesenteric conductances (%ΔMC) after i.v. L-NAME in sedentary (S) and exercised (E) SHR and WKY rats.

Variable	S-SHR	E-SHR	S-WKY	E-WKY
MAP before	161±5	151±3	108±7	109±4
MAP after	205±4	203±4	136±6	141±4
ΔMAP	43±4^∗	52±2^+	28±4	32±3
HR before	331±16	325±11	389±16	291±28
HR after	293±16	292±9	335±6	253±19
ΔHR	−38±5	−34±6	−54±12	−38±13
%ΔHC	−53±2%^∗	−48±2%	−35±4%	−48±5%
%ΔMC	−52±2%^∗	−50±2%^+	−40±3%	−40±3%

∗Different from S-WKY.
+Different from E-WKY.