Acute Effects of Polyphenols from Cranberries and Grape Seeds on Endothelial Function and Performance in Elite AthletesReportar como inadecuado




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The Institute on Nutrition and Functional Foods INAF, Laval University, Québec G1V 0A6, Canada





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Abstract We examined how intake of polyphenols modifies brachial artery flow-mediated dilation FMD at rest, and cycling anaerobic performance, in elite athletes. In the first randomized cross-over study, FMD was measured over a three-hour period on two occasions in eight elite male and female athletes after acute consumption of either polyphenols from cranberries and grape seeds 600 mg or a polyphenol-free placebo drink. Consumption of the polyphenol-rich drink led to a significant increase in FMD compared to placebo p = 0.02, with a peak at 60 min. In a second study, 12 elite male and female athletes completed a three-kilometer time trial TT on an ergocycle on two occasions in random order, either after consumption of 800 mg of polyphenols or a placebo. Acute intake of the polyphenol extract had no impact on the three-kilometer time trial completion. However, plasma lactate levels were significantly lower before and after the TT when subjects consumed the polyphenols vs. placebo p < 0.05. Results suggest that polyphenols from cranberries and grape seeds acutely modifies FMD at rest in elite athletes but this does not translate into enhanced cycling anaerobic performance. View Full-Text

Keywords: polyphenol; athlete; endothelial function; FMD polyphenol; athlete; endothelial function; FMD





Autor: Kim Labonté, Charles Couillard, Annie Motard-Bélanger, Marie-Eve Paradis, Patrick Couture and Benoît Lamarche *

Fuente: http://mdpi.com/



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