https://ogma.newcastle.edu.au/vital/access/ /manager/Index en-au 5 https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:12724 Wed 24 Jul 2013 22:25:20 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:12680 Wed 24 Jul 2013 22:23:50 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:12657 Wed 24 Jul 2013 22:23:43 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:26762 Thu 24 Mar 2022 11:35:38 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:7083 Sat 24 Mar 2018 08:37:59 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:9515 Sat 24 Mar 2018 08:35:35 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:1971 Sat 24 Mar 2018 08:33:15 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:2925 Sat 24 Mar 2018 08:32:18 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:2994 Sat 24 Mar 2018 08:30:22 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:12828 G-nitro-L-arginine following blockade of α- and β-adrenoceptors and cholinoceptors causes hypertension, but minor changes, if any, in pulmonary pressures or heart rate. Bronchial flow and conductance, however, fall from a higher resting conductance by approximately 50%, suggesting that, normally, resting bronchial flow conductance is dominated by strong tonic NO vasodilator effects that interact with weaker tonic autonomic vasoconstrictor effects.6. Superimposed (respiratory) behaviours of sighing, sneezing and coughing, which involve negative swings in intrathoracic pressure and the movement of inspired air, evoke large active bronchovascular dilator effects. These appear to be largely NANC in origin and appear to be dependent, in part, on mechanisms associated with NO release. It is postulated that the C-fibre axon reflex using substance P, calcitonin gene-related peptide and neurokinin A may be involved. Vocalization and eructation do not evoke bronchovascular effects.]]> Sat 24 Mar 2018 08:17:16 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:12713 Sat 24 Mar 2018 08:16:19 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:12113 Sat 24 Mar 2018 08:12:59 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:12191 Sat 24 Mar 2018 08:08:28 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:12201 Sat 24 Mar 2018 08:08:24 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:12260 2, respectively (P < 0.05 for 2 h runners vs controls), whereas intrinsic HR was 383 ± 3, 377 ± 2 and 346 ± 3 b.p.m., respectively (P < 0.001 for 2 h runners vs controls). Restraint stress provoked tachycardia of similar magnitude in all groups. 4. After completion of telemetric studies, haemodynamic indices and susceptibility to cardiac arrhythmias were assessed in anaesthetized animals, there were no major between-group differences in HR, arterial pressure, contractility indices or sensitivity to β-adrenoceptor stimulation (dobutamine) or blockade (atenolol). The effective refractory period in the control rats, 24 h runners and 2 h runners was 49 ± 2, 55 ± 2 and 60 ± 4 ms, respectively (P = 0.054 for 2 h runners vs controls). A significantly higher dose of aconitine was required to provoke ventricular arrhythmias in the 24 h and 2 h running groups compared with controls (489 ± 76, 505 ± 88 and 173 ± 33 μg, respectively; P < 0.05). 5. We conclude that, in rats, long-term voluntary exercise has enduring cardioprotective effects mediated at the level of both the central nervous system and the heart.]]> Sat 24 Mar 2018 08:08:11 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:17776 Sat 24 Mar 2018 07:57:41 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:6554 Sat 24 Mar 2018 07:48:22 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:27173 Sat 24 Mar 2018 07:31:43 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:33275 Mon 24 Sep 2018 13:26:23 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:34341 Mon 04 Mar 2019 14:57:46 AEDT ]]>