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首页> 外文期刊>European journal of nutrition >The effect of acute pre-exercise dark chocolate consumption on plasma antioxidant status, oxidative stress and immunoendocrine responses to prolonged exercise.
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The effect of acute pre-exercise dark chocolate consumption on plasma antioxidant status, oxidative stress and immunoendocrine responses to prolonged exercise.

机译：运动前急性食用黑巧克力对长时间运动后血浆抗氧化剂状态，氧化应激和免疫内分泌反应的影响。

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摘要

Acute antioxidant supplementation may modulate oxidative stress and some immune perturbations that typically occur following prolonged exercise. The aims of the present study were to examine the effects of acutely consuming dark chocolate (high polyphenol content) on plasma antioxidant capacity, markers of oxidative stress and immunoendocrine responses to prolonged exercise. Fourteen healthy men cycled for 2.5 h at approx. 60% maximal oxygen uptake 2 h after consuming 100 g dark chocolate (DC), an isomacronutrient control bar (CC) or neither (BL) in a randomised-counterbalanced design. DC enhanced pre-exercise antioxidant status (P = 0.003) and reduced by trend (P = 0.088) 1 h post-exercise plasma free [F2-isoprostane] compared with CC (also, [F2-isoprostane] increased post-exercise in CC and BL but not DC trials). Plasma insulin concentration was significantly higher pre-exercise (P = 0.012) and 1 h post-exercise (P = 0.026) in the DC compared with the CC trial. There was a better maintenance of plasma glucose concentration on the DC trial (2-way ANOVA trial x time interaction P = 0.001), which decreased post-exercise in all trials but was significantly higher 1 h post-exercise (P = 0.039) in the DC trial. There were no between trial differences in the temporal responses (trial x time interactions all P > 0.05) of hypothalamic-pituitary-adrenal axis stress hormones, plasma interleukin-6, the magnitude of leukocytosis and neutrophilia and changes in neutrophil function. Acute DC consumption may affect insulin, glucose, antioxidant status and oxidative stress responses, but has minimal effects on immunoendocrine responses, to prolonged exercise.
机译：急性抗氧化剂补充可能会调节氧化应激和一些长时间运动后通常发生的免疫干扰。本研究的目的是研究急性食用黑巧克力（高多酚含量）对血浆抗氧化能力，氧化应激标志物和长时间运动的免疫内分泌反应的影响。 14名健康男人大约在大约2.5小时内骑自行车2.5小时。在随机平衡设计中，食用100克黑巧克力（DC），异麦芽营养素控制棒（CC）或都不食用（BL）后2小时，最大摄氧量为60％。 DC在运动后1小时无血浆[F 2 = 0.003）增强，并降低趋势（ P = 0.088）。 sub> -isoprostane]与CC相比（[F 2 -isoprostane]在CC和BL中的运动后增加，但DC试验中没有）。与CC试验相比，DC中运动前血浆胰岛素浓度（ P = 0.012）和运动后1 h（ P = 0.026）明显更高。 DC试验有更好的血浆葡萄糖浓度维持率（2-ANOVA试验x时间交互作用 P = 0.001），这在所有试验中均降低了运动后水平，但在运动后1 h显着升高DC试验中进行运动（ P = 0.039）。下丘脑-垂体-肾上腺轴应激激素，血浆白细胞介素-6，白细胞增多和中性粒细胞增多的程度和变化之间的时间响应（试验x时间交互作用，所有 P

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