Health  Vol.8 No.15 , December 2016
Hydroxytyrosol But Not Resveratrol Ingestion Induced an Acute Increment of Post Exercise Blood Flow in Brachial Artery
Abstract: The aim of this study was to test if previous ingestion of compounds containing resveratrol or hydroxytyrosol, followed by an exhausting hand grip exercise, could induce an acute post-exercise increase in brachial blood flow. Six healthy subjects (three males and three females, 35 ± 7 years), 60 minutes after ingestion of a capsule containing 200 mg of resveratrol or 30 ml of extra virgin olive oil enriched with tyrosol, oleuropein and hydroxytyrosol, performed a hand grip exercise equal to half of their maximum strength until they were no longer able to express the same force (2-day interval between tests). The nonparametric Wilcoxon signed rank test was used for statistical evaluations. Brachial artery blood flow (Fba) and both blood velocity (Vba) and artery diameter (Dba) were assessed immediately after exercise cessation by means of colour Doppler ultrasound. After ingestion of the oil mixture the post-exercise value of Fba median was 2.4 times higher than that after ingestion of the resveratrol compound (P = 0.03), and also the Vba median concerning the hydroxytyrosol was 1.9 times higher than that of the resveratrol (P = 0.03). Both functional foods did not lead to a significant difference in the Dba medians. These results indicate that hydroxytyrosol, but not resveratrol, may be an effective adjuvant of recreational or agonistic, long-lasting sports performances, thanks to the powerful blood flow increment which can be obtained as soon as one hour from its oral intake.
Cite this paper: Sarais, G. , Crisafulli, A. , Concu, D. , Fois, A. , Raweh, A. and Concu, A. (2016) Hydroxytyrosol But Not Resveratrol Ingestion Induced an Acute Increment of Post Exercise Blood Flow in Brachial Artery. Health, 8, 1766-1777. doi: 10.4236/health.2016.815170.

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