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Acute Effects of Polyphenols from Cranberries and Grape Seeds on Endothelial Function and Performance in Elite Athletes
- Source :
- Sports, Vol 1, Iss 3, Pp 55-68 (2013)
- Publication Year :
- 2013
- Publisher :
- MDPI AG, 2013.
-
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.
- Subjects :
- polyphenol
athlete
endothelial function
FMD
Sports
GV557-1198.995
Subjects
Details
- Language :
- English
- ISSN :
- 20754663
- Volume :
- 1
- Issue :
- 3
- Database :
- Directory of Open Access Journals
- Journal :
- Sports
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.4ecfd343df0247dc87cc012c0a32bf01
- Document Type :
- article
- Full Text :
- https://doi.org/10.3390/sports1030055