Acute endurance exercise induces changes in vasorelaxation responses that are vessel-specific.
作者： Juan M Murias , Kenneth N Grise , Mao Jiang , Hana Kowalchuk , CW James Melling
DOI: 10.1152/AJPREGU.00508.2012
关键词:
摘要: The dynamic adjustment and amplitude of the endothelium-dependent vasorelaxation carotid, aorta, iliac, femoral vessels were measured in response to acute low- (LI) or high-intensity (HI) endurance exercise. Vasorelaxation 10(-4) M ACh was evaluated 10 control, LI, HI rats. Two-millimeter sections arteries mounted onto a myography system. responses modeled as monoexponential function. overall τ (control, 10.5 ± 6.0 s; 10.4 5.7 HI, 11.0 6.9 s) time-to-steady-state 47.6 24.0 46.2 22.8 49.1 28.3 similar control (P > 0.05). (average four vessel-type) % larger LI (73 16%) than (66 19%) rate carotid (1.1 0.2%·s(-1)), aorta (1.5 0.4%·s(-1)), iliac (2.2 0.8%·s(-1)), (2.6 1.0%·s(-1)). In conclusion, an bout exercise increased vascular responsiveness. percent adjustments vessel-specific with vessel function likely determining response.
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