Effect of postprandial thermogenesis on the cutaneous vasodilatory response during exercise
Effect of postprandial thermogenesis on the cutaneous vasodilatory response during exercise
复制标题
餐后产热对运动时皮肤血管舒张反应的影响
DOI：
10.1139/apnm-2013-0506
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
and Yuichi Suzuki.
中科院分区：
文献类型：
--
作者：
Keiji Hayashi;Nozomi Ito;Yoko Ichikawa;and Yuichi Suzuki.
为了检查餐后产热对皮肤血管舒张反应的影响，10 名健康男性受试者在自行车测力计上以 50% 峰值摄氧量锻炼 30 分钟，无论是否摄入食物。进食时的平均皮肤温度、平均体温、心率、摄氧量、二氧化碳消除量和呼吸商均显着高于不进食时的基线水平。为了评估皮肤血管舒张反应，将相对激光多普勒血流测定值与食管温度 (Tes) 和绘制成图。回归分析显示，摄入食物时皮肤血管舒张的阈值往往比不摄入食物时更高，但敏感性没有显着差异。为了阐明餐后生热对皮肤血管舒张阈值的影响，分别将测试阈值和阈值的会话间差异与基线Tes和基线的会话间差异作图。结果图的线性回归分析显示显着的正线性关系（Tes：r = 0.85，P < 0.01；：r = 0.67，P < 0.05）。这些结果表明，餐后产热增加了基线体温，从而提高了运动期间皮肤血管舒张的体温阈值。
To examine the effect of postprandial thermogenesis on the cutaneous vasodilatory response, 10 healthy male subjects exercised for 30 min on a cycle ergometer at 50% of peak oxygen uptake, with and without food intake. Mean skin temperature, mean body temperature (), heart rate, oxygen uptake, carbon dioxide elimination, and respiratory quotient were all significantly higher at baseline in the session with food intake than in the session without food intake. To evaluate the cutaneous vasodilatory response, relative laser Doppler flowmetry values were plotted against esophageal temperature (Tes) and. Regression analysis revealed that thethreshold for cutaneous vasodilation tended to be higher with food intake than without it, but there were no significant differences in the sensitivity. To clarify the effect of postprandial thermogenesis on the threshold for cutaneous vasodilation, the between-session difference in theTesthreshold and thethreshold were plotted against the between-session difference in baselineTesand baseline, respectively. Linear regression analysis of the resultant plot showed significant positive linear relationships (Tes:r= 0.85,P< 0.01;:r= 0.67,P< 0.05). These results suggest that postprandial thermogenesis increases baseline body temperature, which raises the body temperature threshold for cutaneous vasodilation during exercise.