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. 2003 Aug 29;553(Pt 1):281–292. doi: 10.1113/jphysiol.2003.049940

Figure 3. Effects of l-NAME on forearm vasoconstrictor responses to tyramine.

Figure 3

The vasoconstrictor responses to tyramine are significantly blunted during rhythmic handgrip exercise (open bars) compared with a control vasodilator condition (adenosine; filled bars). Intra-arterial administration of l-NAME to inhibit NOS does not augment the vasoconstrictor responses during adenosine or (more importantly) during handgrip exercise. * P < 0.05vs. adenosine for given tyramine dose within same l-NAME condition.